Amornpan Ajjimaporn - Academia.edu (original) (raw)

Papers by Amornpan Ajjimaporn

Research paper thumbnail of Recovery Effects of Foam Rolling on Psychophysiological Responses in Thai National Male Ice Hockey Players

PubMed, 2023

We examined the short-term effects of foam rolling (FR), dynamic stretching (DS), and passive res... more We examined the short-term effects of foam rolling (FR), dynamic stretching (DS), and passive rest (PR) following simulated ice hockey exercise (IHE) on heart rate (HR), blood lactate (BL), leg choice reaction time (CRTleg), rating of perceived exertion (RPE), and global rating of change (GRC) in elite ice hockey players. The study followed a randomized cross-over design. Fifteen national male ice hockey players were assigned to the FR, DS, or PR interventions for 10 mins following 35- min of simulated IHE. HR and BL were obtained at 0-, 5- and 10-min post-intervention. CRTleg and RPE were assessed pre-and post-intervention. GRC was evaluated post-intervention. The PR decreased HR faster than the DS at 5-min of post-treatment. Whereas the FR and DS reduced BL levels faster than the PR at 5- and 10-min post-treatment. There was no difference in CRTleg among the FR, DS, and PR. The FR had lower RPE scores compared to the DS and PR post-treatment. As perceptual aspects, the FR was the most preferred treatment by ice hockey athletes. The FR and DS exerted more beneficial effects on BL but not on HR by the passive rest. The FR showed the most effective treatment on the psychological demands by improving RPE and perceptual responses over the DS and PR. Thus, the FR could be used as a choice for post-game recovery treatment on improving physiological and perceptual responses following an intense match-play in ice hockey players.

Research paper thumbnail of Main manuscript ijesports.docx

Research paper thumbnail of Effect of New Zealand Blackcurrant Extract on Physiological Responses at Rest and during Brisk Walking in Southeast Asian Men: A Randomized, Double-Blind, Placebo-Controlled, Crossover Study

Nutrients, Nov 12, 2018

New Zealand blackcurrant (NZBC) extract affects cardiovascular and metabolic responses during res... more New Zealand blackcurrant (NZBC) extract affects cardiovascular and metabolic responses during rest and exercise in Caucasian men. Ethnicity and nutritional habits may affect responses to nutritional ergogenic aids. We examined the effects of NZBC extract on cardiovascular, metabolic, and physiological responses during seated rest and moderate-intensity exercise in Southeast Asian men. Seventeen healthy Thai men (age: 22 ± 3 years; body mass index (BMI): 21.8 ± 1.1 kg•m −2) participated. Resting metabolic equivalent (1-MET) was measured (Oxycon™ mobile, Germany), and an incremental walking protocol was completed to establish the relationship between walking speed and MET. In a double-blind, randomized, placebo-controlled, crossover design, cardiovascular (Physioflow, n = 12) and physiological responses (Oxycon, n = 17) were measured during both seated rest and a 30-min treadmill walk at five metabolic equivalent (5-MET), with either a seven-day intake of placebo (PL) or two capsules of NZBC extract (each 300 mg capsule contains 35% blackcurrant extract) with a 14-day washout. Paired t-tests were used with significance accepted at p < 0.05 and a trend for 0.05 > p ≤ 0.10. During 30 min of treadmill walking at 5-MET, no differences were observed for heart rate and substrate oxidation. With intake of NZBC during treadmill walking, there was a trend for increased stroke volume by 12% (PL: 83.2 ± 25.1; NZBC: 93.0 ± 24.3 mL; p = 0.072) and cardiac output increased by 12% (PL: 9.2 ± 2.6; NZBC: 10.3 ± 2.8 L•min −1 ; p = 0.057). Systemic vascular resistance decreased by 10% (PL: 779 ± 267; NZBC: 697 ± 245 dyn•s•cm −5 ; p = 0.048). NZBC extract had no effect on metabolic, physiological, and cardiovascular parameters during seated rest and exercise-induced fat oxidation in Thai men, in contrast to observations in Caucasian men. During treadmill walking, Thai men showed cardiovascular response, indicating vasodilatory effects during moderate-intensity exercise with the intake of NZBC extract. Our findings suggest that the ergogenic responses to anthocyanin intake from New Zealand blackcurrant may be ethnicity-dependent.

Research paper thumbnail of Body composition and physical fitness improve after 8 weeks of high-intensity circuit training using body weight in obese women

Journal of Sports Medicine and Physical Fitness, Feb 1, 2023

Research paper thumbnail of ZIP8 expression in human proximal tubule cells, human urothelial cells transformed by Cd+2 and As+3 and in specimens of normal human urothelium and urothelial cancer

Cancer Cell International, Jul 4, 2012

Background: ZIP8 functions endogenously as a Zn +2 /HCO 3 symporter that can also bring cadmium (... more Background: ZIP8 functions endogenously as a Zn +2 /HCO 3 symporter that can also bring cadmium (Cd +2) into the cell. It has also been proposed that ZIP8 participates in Cd-induced testicular necrosis and renal disease. In this study real-time PCR, western analysis, immunostaining and fluorescent localization were used to define the expression of ZIP8 in human kidney, cultured human proximal tubule (HPT) cells, normal and malignant human urothelium and Cd +2 and arsenite (As +3) transformed urothelial cells. Results: It was shown that in the renal system both the non-glycosylated and glycosylated form of ZIP8 was expressed in the proximal tubule cells with localization of ZIP8 to the cytoplasm and cell membrane; findings in line with previous studies on ZIP8. The studies in the bladder were the first to show that ZIP8 was expressed in normal urothelium and that ZIP8 could be localized to the paranuclear region. Studies in the UROtsa cell line confirmed a paranuclear localization of ZIP8, however addition of growth medium to the cells increased the expression of the protein in the UROtsa cells. In archival human samples of the normal urothelium, the expression of ZIP8 was variable in intensity whereas in urothelial cancers ZIP8 was expressed in 13 of 14 samples, with one high grade invasive urothelial cancer showing no expression. The expression of ZIP8 was similar in the Cd +2 and As +3 transformed UROtsa cell lines and their tumor transplants. Conclusion: This is the first study which shows that ZIP8 is expressed in the normal urothelium and in bladder cancer. In addition the normal UROtsa cell line and its transformed counterparts show similar expression of ZIP8 compared to the normal urothelium and the urothelial cancers suggesting that the UROtsa cell line could serve as a model system to study the expression of ZIP8 in bladder disease.

Research paper thumbnail of Metallothionein provides zinc-mediated protective effects against methamphetamine toxicity in SK-N-SH cells

Brain Research Bulletin, Nov 1, 2005

Methamphetamine (METH) is a drug of abuse and neurotoxin that induces Parkinson&amp;amp;amp;a... more Methamphetamine (METH) is a drug of abuse and neurotoxin that induces Parkinson&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s-like pathology after chronic usage by targeting dopaminergic neurons. Elucidation of the intracellular mechanisms that underlie METH-induced dopaminergic neuron toxicity may help in understanding the mechanism by which neurons die in Parkinson&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s disease. In the present study, we examined the role of reactive oxygen species (ROS) in the METH-induced death of human dopaminergic SK-N-SH cells and further assessed the neuroprotective effects of zinc and metallothionein (MT) against METH-induced toxicity in culture. METH significantly increased the production of reactive oxygen species, decreased intracellular ATP levels and reduced the cell viability. Pre-treatment with zinc markedly prevented the loss of cell viability caused by METH treatment. Zinc pre-treatment mainly increased the expression of metallothionein and prevented the generation of reactive oxygen species and ATP depletion caused by METH. Chelation of zinc by CaEDTA caused a significant decrease in MT expression and loss of protective effects of MT against METH toxicity. These results suggest that zinc-induced MT expression protects dopaminergic neurons via preventing the accumulation of toxic reactive oxygen species and halting the decrease in ATP levels. Furthermore, MT may prevent the loss of mitochondrial functions caused by neurotoxins. In conclusion, our study suggests that MT, a potent scavenger of free radicals is neuroprotective against dopaminergic toxicity in conditions such as drug of abuse and in Parkinson&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s disease.

Research paper thumbnail of Acute physiological responses in pregnant women during exercises in different positions

Physiotherapy Theory and Practice, Mar 20, 2018

Objective: This study measured acute physiological responses in pregnant women during short durat... more Objective: This study measured acute physiological responses in pregnant women during short duration exercise in the supine (Sup), side-lying (Side), sitting (Sit), and standing (Std) positions. Methods: In a cross-sectional study, 42 healthy pregnant women were divided into 3 groups of 14 persons each: G1, G2, and G3 (first, second, and third trimester, respectively). Baseline assessments were performed following a 30-min rest in the sitting position. Subsequent measurements were then obtained while exercising, without resistance, in the Sup, Side, Sit, and Std, respectively. Physiological parameters, including heart rate (HR), minute ventilation (_ V E), oxygen consumption (_ VO 2), carbon dioxide production (_ VCO 2), and oxygen pulse (_ VO 2 /HR), were collected using the indirect calorimetry. Results: Comparing resting values, all groups had a significantly increased (1) HR, _ V E , and _ VCO 2 during the Std, (2) _ VO 2 values during the Sit and Std, and (3) O 2 pulse values during short duration exercise in all positions except the Std, whereas only G2 and G3 had a significantly decreased HR during the Sup. Conclusion: This study points that acute physiological responses to the positional challenge similarly occur in all trimester of pregnant women. Short duration exercise in the Std positions exerts more physiologic stresses on cardiorespiratory functions than in the Sup, Side, and Sit positions.

Research paper thumbnail of The Acute Effect of Exergame on Haemodynamics Responses in Sedentary and Active Young Adults

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jun 16, 2015

The purpose of this study was to investigate the effects of exergame (Nintendo ® WiiFi™) on haemo... more The purpose of this study was to investigate the effects of exergame (Nintendo ® WiiFi™) on haemodynamics responses. Twenty participants with age 18-25 years old were participated in this study and were divided into two groups; active group (AG; n=10) and sedentary group (SG; n=10). On the experimental day, after resting for 10 min., participants performed exercise by using seven games of Nintendo Wii for 20 min. and recovery for 5 min. The haemodynamic variables including heart rate (HR), stroke volume (SV), cardiac output (CO), cardiac index (CI), ejection fraction (EF), and systemetic vascular resistance (SVR) were recorded in a real time on neck, sternum, rib closet to V6, and back by non-invasive technique (Physioflow ® ) throughout the experiment. The results showed that at rest, during exercise, and recovery period, the participants in AG had better blood circulation than those in SG, but no significant difference between groups. However, the value of EF in AG at recovery period was higher than that in SG and showed significant difference ( p <0.05) between groups. Therefore, exercise by exergame can improve the cardiac function in young adults. The AG had more responses to exergames than SG in some haemodynamics parameters. (Journal of Sports Science and Technology 2015;15(1): 121-130 )

Research paper thumbnail of Effects of Exercising Posture on Heart Rate and Energy Expenditure in Pregnant Thai Women

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Aug 10, 2014

The aim of this study was to measure heart rate (HR) and metabolic equivalent (MET) during exerci... more The aim of this study was to measure heart rate (HR) and metabolic equivalent (MET) during exercise in supine (Sup), side-lying (Side-lying), sitting (Sit), standing (St) and walking position at the 1st (G1), the 2nd (G2), and the 3rd (G3) trimester in pregnant Thai women. Forty- two healthy active non-smoking pregnant women participated in this study and divided into G1, G2 and G3 groups depending on mean gestational ages at the time of testing. The values for HR and MET were measured using indirect calorimetry (IC, gas analyser) at rest and during exercise. Baseline assessments were made in the sitting recumbent position after a 30-minute stabilization period. Sequential measurements were then obtained in the following exercise positions; Sup, Side-lying, Sit, St and walking position, respectively. At rest compared with exercising in Sup position, the subject had tendency to decrease in HR, but statistically significant difference was found only in G3 group (P<0.05). St and Walking accelerated and increased HR more than the other three positions with the same of patterns in all gestation groups. The percentage of change in MET relative to resting position was significantly higher in walking than the other positions in all gestation groups (P<0.05). Our data strongly correlates with the American College of Obstetricians and Gynecologists guideline that recommends avoiding the Sup position post G1. We found walking to be the most spending cost of energy with respect to maternal MET output. Thus, we highly recommend pregnant women walk on a regular basis throughout pregnancy as this will also help maintain their aerobic fitness during pregnancy. (Journal of Sports Science and Technology 2014;14(1): 145 -154 ) KEYWORDS: Pregnant woman, Heart rate, Metabolic changes, Body posture

Research paper thumbnail of Cardiorespiratory and metabolic stresses during repeated pursed-lips breathing in chronic obstructive pulmonary disease

Physiotherapy Quarterly, 2023

Introduction. Pursed-lip breathing (PLB) is a breathing exercise treatment for patients with chro... more Introduction. Pursed-lip breathing (PLB) is a breathing exercise treatment for patients with chronic obstructive pulmonary disease (CoPd). The purpose of this study was to investigate the dynamic changes in the cardiorespiratory and metabolic functions during and after repeated volitional PLB and spontaneous breathing (SB) at rest in CoPd patients. Methods. Sixteen patients with moderate-to-severe airflow limitation participated in this crossover study in which the subjects in both the groups randomly received 10 repeated cycles of PLB and SB interventions. Cardiorespiratory and metabolic variables were collected at the baseline, throughout the 10 breathing cycles, and after a recovery period of 5 min. Results. during PLB, the tidal volume (VT) increased progressively, whereas the breathing frequency (BF) decreased gradually throughout the 10 volitional PLB cycles (p > 0.05). However, minute ventilation (V E), oxygen consumption (Vo 2), and carbon dioxide production (VCo 2) remained unchanged during PLB (p > 0.05). The VT and BF peaks appeared during the 8 th and 7 th cycles, respectively, and then plateaued until the 10 th breathing cycle. The heart rate (HR) while performing PLB slightly increased (p < 0.05) from the 3 rd to the 10 th cycle compared to SB. Conclusions. despite the clinical benefits of PLB in increasing the inspired volume and slowing the rate of breathing, this manoeuvre in CoPd patients should be prescribed with an awareness of the risk of cardiac stress, especially the effect on the HR, as well as the respiratory limitations with repeated PLB. Practically, this study recommends limiting repeated PLB in CoPd patients to seven breathing cycles.

Research paper thumbnail of Effect of Cold Shower on Recovery From High-Intensity Cycling in the Heat

Journal of Strength and Conditioning Research, Aug 1, 2019

Post-exercise cooling, e.g., cold water immersion has shown beneficial cardiovascular and hormona... more Post-exercise cooling, e.g., cold water immersion has shown beneficial cardiovascular and hormonal effects during recovery from exercise in a hot environment. However, not much is known about the effects of a cold water shower (CWS) as a recovery intervention. This study examined the effects of a CWS on heart rate (HR), core temperature (Tc), salivary cortisol, and thermal comfort sensation (TCS) after exercise in the heat. Nine healthy male subjects (age, 21 6 1 year) performed 45 minutes of cycling in a hot environment (358 C, 40-60% relative humidity) at 65% of peak oxygen uptake. Thereafter, subjects underwent the CWS condition (15 minutes, 158 C water shower) or control (SIT25; 15 minutes passive recovery in 258 C room) in a randomized crossover design. After each 15 minutes, subjects sat in a 258 C room for another 2-hour recovery. Heart rate, Tc, and TCS were recorded before and immediately after exercise, immediately after CWS or SIT25, and at 30 minutes, 1, and 2 hours during additional recovery. Salivary cortisol was collected at the same time points except at 30 minutes of the additional recovery period. Thermal comfort sensation was higher immediately after CWS (+4; very comfortable) than SIT25 (+1; just comfortable). The change of HR decreased faster with CWS (218.3 6 2.3%) than with SIT25 (27.0 6 4.6%) at the first 30-minute recovery time point (p , 0.01). No differences between recovery conditions were observed for the Tc or salivary cortisol at any time point during the 2-hour recovery period. The findings demonstrate that a 15-minute, 158 C CWS was not effective in reducing Tc or salivary cortisol during recovery from exercise in a hot environment. However, CWS can promote TCS by facilitating a faster HR recovery after 30-minute postintervention compared with passive recovery. The cooling benefits of a CWS could be only recommended to reduce cardiac stress after routine workout in a hot environment.

Research paper thumbnail of The Acute Effect of Cold Showers Recovery Method on Core Temperature, Heart Rate, and Thermal Sensation Scale After Exercise in Hot Environment

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jun 16, 2015

The purpose of this study was to compare the acute effect of cooling recovery method using cold w... more The purpose of this study was to compare the acute effect of cooling recovery method using cold water showers and sit in 15 °C temperature on core temperature (Tc), heart rate (HR) and thermal sensation scale (TSS) after exercise in hot environment. Nine subjects underwent 15 min of two recovery methods; sit in 15 °C room temperature (SIT15) and 15 °C water showers (CWS), after exercise at 65% O 2peak for 45 minutes in hot environment (35 °C room temperature, relative humidity (rh) 40-60%). Measures of HR, and Tc were recorded every 30 minutes (min) throughout the experiment. TSS was obtained every 15 min until the end of the experimental trial. Results found that the values of Tc and HR were not different between SIT15 and CWS methods after 15 min intervention period. The values of HR but not Tc found to decrease at post intervention period (p < 0.05) in both recovery methods. TSS was lower in SIT15 (-3; feeling cold) versus CWS (-2; feeling cool) (p < 0.05). Our results concluded that recovery method either taking cold showers or sit in 15 °C room temperature had the same acute effect on reducing HR but not changing Tc of the subjects. However a comfortable sensation mediated benefit of CWS over SIT15 recovery method implicates taking a cold shower may be the good choice of an alternative recovery method after exercise in Thai athlete.

Research paper thumbnail of Stress level and simple reaction time changes in the injured workers of the industrial rehabilitation center, social security office, Ministry of labor, Thailand

วารสารการแพทย์และวิทยาศาสตร์สุขภาพ (Journal of Medicine and Health Sciences), Nov 23, 2015

Research paper thumbnail of Benefits of Thai Yoga on physical mobility and lower limb muscle strength in overweight/obese older women: A randomized controlled pilot trial

Complementary Therapies in Clinical Practice, May 1, 2021

BACKGROUND AND PURPOSE Although Thai Yoga (TY) is reported to improve health-related fitness for ... more BACKGROUND AND PURPOSE Although Thai Yoga (TY) is reported to improve health-related fitness for the elderly, no study has yet carried out the effect of TY Program on physical mobility and lower-limb muscle strength in overweight/obese older women. MATERIALS AND METHODS In a randomized controlled pilot design, twenty-two sedentary women with a BMI ≥ 23 kg/m2, aged 62 ± 1 years were randomly assigned to either a TY group for 60 min, 3 times a week or to a "no exercise" control (CON) group. Sit and reach (SRT), functional reach (FRT) and 30-s chair stand (CST-30), 8-foot up and go (8UGT), 6-min walk (6MWT)) and lower-limb muscle strength were measured at the beginning, 4, and 8 weeks. RESULTS At week 4, a significant between groups was obtained in CST-30, 8UGT, and 6MWT. At week 8, FRT, 8UGT, 6MWT and knee flexor and extensor muscle strength were improved in the TY over the CON. Significant improvement was found in all variables within the TY, but no change was observed in the CON. CONCLUSION An 8-week TY program appears to provide beneficial improvements in physical mobility in overweight/obese older women.

Research paper thumbnail of Effects of an Eight Week Modified Hatha Yoga on the Heart Rate Variability & Stress Response in Injured Workers

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jul 26, 2016

The purposes of this study were 1) to evaluate the effects of modified hatha yoga on the injured ... more The purposes of this study were 1) to evaluate the effects of modified hatha yoga on the injured workers after training for 8 weeks, and 2) to measure heart rate variability (HRV), stress responses, and physical fitness changes in the industrial injured workers. Twenty-six subjects (13 injured workers (IW) and 13 control normal workers (CN), aged between 18 to 60 years, volunteered to participate in this study. All participants were measured HRV, stress responses parameters including electromyography (EMG), respiratory rate, skin temperature and skin conductance. IW group were further divided into two groups; hatha yoga injured workers (YIW) (n=7) and control injured workers (CIW) (n=6). YIW group performed 60- minute/day, 3 days/week for 8 weeks of modified hatha yoga and then all parameters were measured again. Results showed that IW group had a significant increase in LF/HF ratio of HRV (2.41) and skin conductance (2.18 μS) compared to the CN group (HRV= 1.61, skin conductance = 1.24 μS) (p < 0.05). Conclusion: The injury from industrial work disturb balance of PNS and SNS activity. And the 8 week modified hatha yoga could not improve HRV and stress response in YIW group. (Journal of Sports Science and Technology 2016; 16(1) : 55-64) Keywords: Heart rate variability, Workers, Modified hatha yoga *Corresponding author : Pensinee Panasiriwong College of Sports Science and Technology, Mahidol University, Phutthamonthon, Nakorn pathom, Thailand 73170 E-mail: mai.br91@gmail.com

Research paper thumbnail of Effect of 4 Week Simple Balance Exercise on Balance Ability in Thai Elderly

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jun 16, 2015

ABSTRACT

Research paper thumbnail of Physical Fitness Changes in Children After Attending a Sports Summer Day Camp Program 2015 at College of Sports Science and Technology, Mahidol Univesity for 3 Weeks

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jun 16, 2015

The aim of this study was to investigate physical fitness of children after participat... more The aim of this study was to investigate physical fitness of children after participating a sports summer day camp 2558 at college of sports science, Mahidol Univesity for 3 weeks. A total of 146 boys (n=81) and girls (n=65), aged 6 to 12, were participated in this study. The physical fitness parameters in this study composed of 1) the body compositions, including the body weight (in kilogram; kg), body mass index (BMI, in kg/m 2 ), and waist circumference (in centimeter; cm), 2) upper and lower muscle strength, including bicep curls in 30 second test (times), standing board jump (in cm), and grip strength (in kg), 3) flexibility (in cm), using sit and reach test, and 4) cardiorespiratoty function (ml/kg/min) using an endurance shuttle run test. Results showed that the significant changes in physical fitness parameters after 3 weeks of summer camping ( p <0.001) were found in waist circumference (decresed from 63.05 + 9.59 cm to 56.38 + 9.51 cm in the boys and from 62.89 + 10.34 cm to 56.69 + 8.80 cm in the girls), the trunk flexibility (decresed from 2.45 + 4.57 cm to -0.29 + 6.19 cm in the boys), the bicep curls of elbow flexion (incresed from 27 + 11 times to 32 + 12 times in the boys), grip strength ( increased from 12.29+4.42 kg to 13.78+4.37 kg in the girls) and the standing board jump ( increased from 110.13 + 20.21 cm to 118.27 + 16.27 cm in the girls). From the results can be concluded that children who participating a sports summer day camp for 3 weeks had improved their physical fitness by reducing waist circumference as well as increasing upper and lower muscle strength and power. However, there were no changes in body weight and BMI in both boys and girls indicated healthy recipes for snacks and lunch meal should be concerned for the next year’s camping program. Moreover, adding the physical activity program to increase trunk flexibility and endurance are also recommenced. (Journal of Sports Science and Technology 2015;15(1): 213-222 )

Research paper thumbnail of Acute Effect of Different Five-Minute Warm-Up Protocols on Flexibility and Sprint Ability in Collegiate Soccer Players

Insufficient warm-up (WU) of substitute soccer players could limit the performance and increase r... more Insufficient warm-up (WU) of substitute soccer players could limit the performance and increase risk of injury. Different WU protocols were designed to help them get an effective WU in a shorter time frame for enhancing their performances. The aim of this study is to find a five-minute WU protocol that can improve flexibility and Repeated Sprint Ability (RSA) with an acceptable fatigue, as compared to no warm up condition. Twelve healthy collegiate male soccer players participated in this study. Subjects performed 4 randomly different warm up protocols on four nonconsecutive days: (a) no warm up (NW); rest of 5 minutes, (b) dynamic warm up (DW); jogging of 2:30 minutes and 2:30-minute of dynamic warm up, (c) dynamic resistance warm up (DRW); DW plus 8 repetitions of body weight squats, and (d) dynamic sprint warm up (DSW); DW plus two 20-m shuttle sprint. Hamstring flexibility, RSA parameters and Borg's RPE scale were measure. Flexibility was significantly improved after performing DRW and DSW, but not significant different in NW and DW, (p<0.01). DSW and DRW protocols significantly improved RSA parameters compared with NW as observed in average time and total time. The fastest time was improved only in DSW protocol (p<0.05). Fatigue for DW, DSW and DRW was not different from NW. Improved flexibility and RSA performance in DSW and DRW would be suggested for substitute soccer players with limited WU time.

Research paper thumbnail of The Feasibility of a 4-Week Home-Based Exercise Training Using Active Video Games on Balance, Motor Proficiency, Foot and Ankle Ability, and Intrinsic Motivation in Children with Chronic Ankle Instability: A Randomized Controlled Trial (Preprint)

BACKGROUND Children with chronic ankle instability (CAI) frequently experience ankle unsteadiness... more BACKGROUND Children with chronic ankle instability (CAI) frequently experience ankle unsteadiness, causing trips, falls, and ankle sprain injuries resulting in poor quality of life. A specific exercise program focused on physical and psychological purposes in children with CAI is needed. OBJECTIVE The purpose of this study was to investigate the feasibility of a 4-week home-based exercise training using active video games (AVGs) on balance, motor proficiency, foot and ankle ability, and intrinsic motivation in children with CAI. METHODS Sixty children with CAI (10 ± 2 years) were randomly assigned to an experimental group (AVGs; n = 30) or a control group (CG; n = 30). The AVGs group played 2-selected video games, i.e., catching fish and Russian Block, while the CG group received the exercise program for CAI. Both programs were scheduled for 30 minutes per day, 3 times per week for four weeks at home. The single-leg stance test was used to assess static balance. The walking forward ...

Research paper thumbnail of Body composition and physical fitness improve after 8 weeks of high-intensity circuit training using body weight in obese women

The Journal of Sports Medicine and Physical Fitness

Research paper thumbnail of Recovery Effects of Foam Rolling on Psychophysiological Responses in Thai National Male Ice Hockey Players

PubMed, 2023

We examined the short-term effects of foam rolling (FR), dynamic stretching (DS), and passive res... more We examined the short-term effects of foam rolling (FR), dynamic stretching (DS), and passive rest (PR) following simulated ice hockey exercise (IHE) on heart rate (HR), blood lactate (BL), leg choice reaction time (CRTleg), rating of perceived exertion (RPE), and global rating of change (GRC) in elite ice hockey players. The study followed a randomized cross-over design. Fifteen national male ice hockey players were assigned to the FR, DS, or PR interventions for 10 mins following 35- min of simulated IHE. HR and BL were obtained at 0-, 5- and 10-min post-intervention. CRTleg and RPE were assessed pre-and post-intervention. GRC was evaluated post-intervention. The PR decreased HR faster than the DS at 5-min of post-treatment. Whereas the FR and DS reduced BL levels faster than the PR at 5- and 10-min post-treatment. There was no difference in CRTleg among the FR, DS, and PR. The FR had lower RPE scores compared to the DS and PR post-treatment. As perceptual aspects, the FR was the most preferred treatment by ice hockey athletes. The FR and DS exerted more beneficial effects on BL but not on HR by the passive rest. The FR showed the most effective treatment on the psychological demands by improving RPE and perceptual responses over the DS and PR. Thus, the FR could be used as a choice for post-game recovery treatment on improving physiological and perceptual responses following an intense match-play in ice hockey players.

Research paper thumbnail of Main manuscript ijesports.docx

Research paper thumbnail of Effect of New Zealand Blackcurrant Extract on Physiological Responses at Rest and during Brisk Walking in Southeast Asian Men: A Randomized, Double-Blind, Placebo-Controlled, Crossover Study

Nutrients, Nov 12, 2018

New Zealand blackcurrant (NZBC) extract affects cardiovascular and metabolic responses during res... more New Zealand blackcurrant (NZBC) extract affects cardiovascular and metabolic responses during rest and exercise in Caucasian men. Ethnicity and nutritional habits may affect responses to nutritional ergogenic aids. We examined the effects of NZBC extract on cardiovascular, metabolic, and physiological responses during seated rest and moderate-intensity exercise in Southeast Asian men. Seventeen healthy Thai men (age: 22 ± 3 years; body mass index (BMI): 21.8 ± 1.1 kg•m −2) participated. Resting metabolic equivalent (1-MET) was measured (Oxycon™ mobile, Germany), and an incremental walking protocol was completed to establish the relationship between walking speed and MET. In a double-blind, randomized, placebo-controlled, crossover design, cardiovascular (Physioflow, n = 12) and physiological responses (Oxycon, n = 17) were measured during both seated rest and a 30-min treadmill walk at five metabolic equivalent (5-MET), with either a seven-day intake of placebo (PL) or two capsules of NZBC extract (each 300 mg capsule contains 35% blackcurrant extract) with a 14-day washout. Paired t-tests were used with significance accepted at p < 0.05 and a trend for 0.05 > p ≤ 0.10. During 30 min of treadmill walking at 5-MET, no differences were observed for heart rate and substrate oxidation. With intake of NZBC during treadmill walking, there was a trend for increased stroke volume by 12% (PL: 83.2 ± 25.1; NZBC: 93.0 ± 24.3 mL; p = 0.072) and cardiac output increased by 12% (PL: 9.2 ± 2.6; NZBC: 10.3 ± 2.8 L•min −1 ; p = 0.057). Systemic vascular resistance decreased by 10% (PL: 779 ± 267; NZBC: 697 ± 245 dyn•s•cm −5 ; p = 0.048). NZBC extract had no effect on metabolic, physiological, and cardiovascular parameters during seated rest and exercise-induced fat oxidation in Thai men, in contrast to observations in Caucasian men. During treadmill walking, Thai men showed cardiovascular response, indicating vasodilatory effects during moderate-intensity exercise with the intake of NZBC extract. Our findings suggest that the ergogenic responses to anthocyanin intake from New Zealand blackcurrant may be ethnicity-dependent.

Research paper thumbnail of Body composition and physical fitness improve after 8 weeks of high-intensity circuit training using body weight in obese women

Journal of Sports Medicine and Physical Fitness, Feb 1, 2023

Research paper thumbnail of ZIP8 expression in human proximal tubule cells, human urothelial cells transformed by Cd+2 and As+3 and in specimens of normal human urothelium and urothelial cancer

Cancer Cell International, Jul 4, 2012

Background: ZIP8 functions endogenously as a Zn +2 /HCO 3 symporter that can also bring cadmium (... more Background: ZIP8 functions endogenously as a Zn +2 /HCO 3 symporter that can also bring cadmium (Cd +2) into the cell. It has also been proposed that ZIP8 participates in Cd-induced testicular necrosis and renal disease. In this study real-time PCR, western analysis, immunostaining and fluorescent localization were used to define the expression of ZIP8 in human kidney, cultured human proximal tubule (HPT) cells, normal and malignant human urothelium and Cd +2 and arsenite (As +3) transformed urothelial cells. Results: It was shown that in the renal system both the non-glycosylated and glycosylated form of ZIP8 was expressed in the proximal tubule cells with localization of ZIP8 to the cytoplasm and cell membrane; findings in line with previous studies on ZIP8. The studies in the bladder were the first to show that ZIP8 was expressed in normal urothelium and that ZIP8 could be localized to the paranuclear region. Studies in the UROtsa cell line confirmed a paranuclear localization of ZIP8, however addition of growth medium to the cells increased the expression of the protein in the UROtsa cells. In archival human samples of the normal urothelium, the expression of ZIP8 was variable in intensity whereas in urothelial cancers ZIP8 was expressed in 13 of 14 samples, with one high grade invasive urothelial cancer showing no expression. The expression of ZIP8 was similar in the Cd +2 and As +3 transformed UROtsa cell lines and their tumor transplants. Conclusion: This is the first study which shows that ZIP8 is expressed in the normal urothelium and in bladder cancer. In addition the normal UROtsa cell line and its transformed counterparts show similar expression of ZIP8 compared to the normal urothelium and the urothelial cancers suggesting that the UROtsa cell line could serve as a model system to study the expression of ZIP8 in bladder disease.

Research paper thumbnail of Metallothionein provides zinc-mediated protective effects against methamphetamine toxicity in SK-N-SH cells

Brain Research Bulletin, Nov 1, 2005

Methamphetamine (METH) is a drug of abuse and neurotoxin that induces Parkinson&amp;amp;amp;a... more Methamphetamine (METH) is a drug of abuse and neurotoxin that induces Parkinson&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s-like pathology after chronic usage by targeting dopaminergic neurons. Elucidation of the intracellular mechanisms that underlie METH-induced dopaminergic neuron toxicity may help in understanding the mechanism by which neurons die in Parkinson&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s disease. In the present study, we examined the role of reactive oxygen species (ROS) in the METH-induced death of human dopaminergic SK-N-SH cells and further assessed the neuroprotective effects of zinc and metallothionein (MT) against METH-induced toxicity in culture. METH significantly increased the production of reactive oxygen species, decreased intracellular ATP levels and reduced the cell viability. Pre-treatment with zinc markedly prevented the loss of cell viability caused by METH treatment. Zinc pre-treatment mainly increased the expression of metallothionein and prevented the generation of reactive oxygen species and ATP depletion caused by METH. Chelation of zinc by CaEDTA caused a significant decrease in MT expression and loss of protective effects of MT against METH toxicity. These results suggest that zinc-induced MT expression protects dopaminergic neurons via preventing the accumulation of toxic reactive oxygen species and halting the decrease in ATP levels. Furthermore, MT may prevent the loss of mitochondrial functions caused by neurotoxins. In conclusion, our study suggests that MT, a potent scavenger of free radicals is neuroprotective against dopaminergic toxicity in conditions such as drug of abuse and in Parkinson&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s disease.

Research paper thumbnail of Acute physiological responses in pregnant women during exercises in different positions

Physiotherapy Theory and Practice, Mar 20, 2018

Objective: This study measured acute physiological responses in pregnant women during short durat... more Objective: This study measured acute physiological responses in pregnant women during short duration exercise in the supine (Sup), side-lying (Side), sitting (Sit), and standing (Std) positions. Methods: In a cross-sectional study, 42 healthy pregnant women were divided into 3 groups of 14 persons each: G1, G2, and G3 (first, second, and third trimester, respectively). Baseline assessments were performed following a 30-min rest in the sitting position. Subsequent measurements were then obtained while exercising, without resistance, in the Sup, Side, Sit, and Std, respectively. Physiological parameters, including heart rate (HR), minute ventilation (_ V E), oxygen consumption (_ VO 2), carbon dioxide production (_ VCO 2), and oxygen pulse (_ VO 2 /HR), were collected using the indirect calorimetry. Results: Comparing resting values, all groups had a significantly increased (1) HR, _ V E , and _ VCO 2 during the Std, (2) _ VO 2 values during the Sit and Std, and (3) O 2 pulse values during short duration exercise in all positions except the Std, whereas only G2 and G3 had a significantly decreased HR during the Sup. Conclusion: This study points that acute physiological responses to the positional challenge similarly occur in all trimester of pregnant women. Short duration exercise in the Std positions exerts more physiologic stresses on cardiorespiratory functions than in the Sup, Side, and Sit positions.

Research paper thumbnail of The Acute Effect of Exergame on Haemodynamics Responses in Sedentary and Active Young Adults

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jun 16, 2015

The purpose of this study was to investigate the effects of exergame (Nintendo ® WiiFi™) on haemo... more The purpose of this study was to investigate the effects of exergame (Nintendo ® WiiFi™) on haemodynamics responses. Twenty participants with age 18-25 years old were participated in this study and were divided into two groups; active group (AG; n=10) and sedentary group (SG; n=10). On the experimental day, after resting for 10 min., participants performed exercise by using seven games of Nintendo Wii for 20 min. and recovery for 5 min. The haemodynamic variables including heart rate (HR), stroke volume (SV), cardiac output (CO), cardiac index (CI), ejection fraction (EF), and systemetic vascular resistance (SVR) were recorded in a real time on neck, sternum, rib closet to V6, and back by non-invasive technique (Physioflow ® ) throughout the experiment. The results showed that at rest, during exercise, and recovery period, the participants in AG had better blood circulation than those in SG, but no significant difference between groups. However, the value of EF in AG at recovery period was higher than that in SG and showed significant difference ( p <0.05) between groups. Therefore, exercise by exergame can improve the cardiac function in young adults. The AG had more responses to exergames than SG in some haemodynamics parameters. (Journal of Sports Science and Technology 2015;15(1): 121-130 )

Research paper thumbnail of Effects of Exercising Posture on Heart Rate and Energy Expenditure in Pregnant Thai Women

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Aug 10, 2014

The aim of this study was to measure heart rate (HR) and metabolic equivalent (MET) during exerci... more The aim of this study was to measure heart rate (HR) and metabolic equivalent (MET) during exercise in supine (Sup), side-lying (Side-lying), sitting (Sit), standing (St) and walking position at the 1st (G1), the 2nd (G2), and the 3rd (G3) trimester in pregnant Thai women. Forty- two healthy active non-smoking pregnant women participated in this study and divided into G1, G2 and G3 groups depending on mean gestational ages at the time of testing. The values for HR and MET were measured using indirect calorimetry (IC, gas analyser) at rest and during exercise. Baseline assessments were made in the sitting recumbent position after a 30-minute stabilization period. Sequential measurements were then obtained in the following exercise positions; Sup, Side-lying, Sit, St and walking position, respectively. At rest compared with exercising in Sup position, the subject had tendency to decrease in HR, but statistically significant difference was found only in G3 group (P<0.05). St and Walking accelerated and increased HR more than the other three positions with the same of patterns in all gestation groups. The percentage of change in MET relative to resting position was significantly higher in walking than the other positions in all gestation groups (P<0.05). Our data strongly correlates with the American College of Obstetricians and Gynecologists guideline that recommends avoiding the Sup position post G1. We found walking to be the most spending cost of energy with respect to maternal MET output. Thus, we highly recommend pregnant women walk on a regular basis throughout pregnancy as this will also help maintain their aerobic fitness during pregnancy. (Journal of Sports Science and Technology 2014;14(1): 145 -154 ) KEYWORDS: Pregnant woman, Heart rate, Metabolic changes, Body posture

Research paper thumbnail of Cardiorespiratory and metabolic stresses during repeated pursed-lips breathing in chronic obstructive pulmonary disease

Physiotherapy Quarterly, 2023

Introduction. Pursed-lip breathing (PLB) is a breathing exercise treatment for patients with chro... more Introduction. Pursed-lip breathing (PLB) is a breathing exercise treatment for patients with chronic obstructive pulmonary disease (CoPd). The purpose of this study was to investigate the dynamic changes in the cardiorespiratory and metabolic functions during and after repeated volitional PLB and spontaneous breathing (SB) at rest in CoPd patients. Methods. Sixteen patients with moderate-to-severe airflow limitation participated in this crossover study in which the subjects in both the groups randomly received 10 repeated cycles of PLB and SB interventions. Cardiorespiratory and metabolic variables were collected at the baseline, throughout the 10 breathing cycles, and after a recovery period of 5 min. Results. during PLB, the tidal volume (VT) increased progressively, whereas the breathing frequency (BF) decreased gradually throughout the 10 volitional PLB cycles (p > 0.05). However, minute ventilation (V E), oxygen consumption (Vo 2), and carbon dioxide production (VCo 2) remained unchanged during PLB (p > 0.05). The VT and BF peaks appeared during the 8 th and 7 th cycles, respectively, and then plateaued until the 10 th breathing cycle. The heart rate (HR) while performing PLB slightly increased (p < 0.05) from the 3 rd to the 10 th cycle compared to SB. Conclusions. despite the clinical benefits of PLB in increasing the inspired volume and slowing the rate of breathing, this manoeuvre in CoPd patients should be prescribed with an awareness of the risk of cardiac stress, especially the effect on the HR, as well as the respiratory limitations with repeated PLB. Practically, this study recommends limiting repeated PLB in CoPd patients to seven breathing cycles.

Research paper thumbnail of Effect of Cold Shower on Recovery From High-Intensity Cycling in the Heat

Journal of Strength and Conditioning Research, Aug 1, 2019

Post-exercise cooling, e.g., cold water immersion has shown beneficial cardiovascular and hormona... more Post-exercise cooling, e.g., cold water immersion has shown beneficial cardiovascular and hormonal effects during recovery from exercise in a hot environment. However, not much is known about the effects of a cold water shower (CWS) as a recovery intervention. This study examined the effects of a CWS on heart rate (HR), core temperature (Tc), salivary cortisol, and thermal comfort sensation (TCS) after exercise in the heat. Nine healthy male subjects (age, 21 6 1 year) performed 45 minutes of cycling in a hot environment (358 C, 40-60% relative humidity) at 65% of peak oxygen uptake. Thereafter, subjects underwent the CWS condition (15 minutes, 158 C water shower) or control (SIT25; 15 minutes passive recovery in 258 C room) in a randomized crossover design. After each 15 minutes, subjects sat in a 258 C room for another 2-hour recovery. Heart rate, Tc, and TCS were recorded before and immediately after exercise, immediately after CWS or SIT25, and at 30 minutes, 1, and 2 hours during additional recovery. Salivary cortisol was collected at the same time points except at 30 minutes of the additional recovery period. Thermal comfort sensation was higher immediately after CWS (+4; very comfortable) than SIT25 (+1; just comfortable). The change of HR decreased faster with CWS (218.3 6 2.3%) than with SIT25 (27.0 6 4.6%) at the first 30-minute recovery time point (p , 0.01). No differences between recovery conditions were observed for the Tc or salivary cortisol at any time point during the 2-hour recovery period. The findings demonstrate that a 15-minute, 158 C CWS was not effective in reducing Tc or salivary cortisol during recovery from exercise in a hot environment. However, CWS can promote TCS by facilitating a faster HR recovery after 30-minute postintervention compared with passive recovery. The cooling benefits of a CWS could be only recommended to reduce cardiac stress after routine workout in a hot environment.

Research paper thumbnail of The Acute Effect of Cold Showers Recovery Method on Core Temperature, Heart Rate, and Thermal Sensation Scale After Exercise in Hot Environment

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jun 16, 2015

The purpose of this study was to compare the acute effect of cooling recovery method using cold w... more The purpose of this study was to compare the acute effect of cooling recovery method using cold water showers and sit in 15 °C temperature on core temperature (Tc), heart rate (HR) and thermal sensation scale (TSS) after exercise in hot environment. Nine subjects underwent 15 min of two recovery methods; sit in 15 °C room temperature (SIT15) and 15 °C water showers (CWS), after exercise at 65% O 2peak for 45 minutes in hot environment (35 °C room temperature, relative humidity (rh) 40-60%). Measures of HR, and Tc were recorded every 30 minutes (min) throughout the experiment. TSS was obtained every 15 min until the end of the experimental trial. Results found that the values of Tc and HR were not different between SIT15 and CWS methods after 15 min intervention period. The values of HR but not Tc found to decrease at post intervention period (p < 0.05) in both recovery methods. TSS was lower in SIT15 (-3; feeling cold) versus CWS (-2; feeling cool) (p < 0.05). Our results concluded that recovery method either taking cold showers or sit in 15 °C room temperature had the same acute effect on reducing HR but not changing Tc of the subjects. However a comfortable sensation mediated benefit of CWS over SIT15 recovery method implicates taking a cold shower may be the good choice of an alternative recovery method after exercise in Thai athlete.

Research paper thumbnail of Stress level and simple reaction time changes in the injured workers of the industrial rehabilitation center, social security office, Ministry of labor, Thailand

วารสารการแพทย์และวิทยาศาสตร์สุขภาพ (Journal of Medicine and Health Sciences), Nov 23, 2015

Research paper thumbnail of Benefits of Thai Yoga on physical mobility and lower limb muscle strength in overweight/obese older women: A randomized controlled pilot trial

Complementary Therapies in Clinical Practice, May 1, 2021

BACKGROUND AND PURPOSE Although Thai Yoga (TY) is reported to improve health-related fitness for ... more BACKGROUND AND PURPOSE Although Thai Yoga (TY) is reported to improve health-related fitness for the elderly, no study has yet carried out the effect of TY Program on physical mobility and lower-limb muscle strength in overweight/obese older women. MATERIALS AND METHODS In a randomized controlled pilot design, twenty-two sedentary women with a BMI ≥ 23 kg/m2, aged 62 ± 1 years were randomly assigned to either a TY group for 60 min, 3 times a week or to a "no exercise" control (CON) group. Sit and reach (SRT), functional reach (FRT) and 30-s chair stand (CST-30), 8-foot up and go (8UGT), 6-min walk (6MWT)) and lower-limb muscle strength were measured at the beginning, 4, and 8 weeks. RESULTS At week 4, a significant between groups was obtained in CST-30, 8UGT, and 6MWT. At week 8, FRT, 8UGT, 6MWT and knee flexor and extensor muscle strength were improved in the TY over the CON. Significant improvement was found in all variables within the TY, but no change was observed in the CON. CONCLUSION An 8-week TY program appears to provide beneficial improvements in physical mobility in overweight/obese older women.

Research paper thumbnail of Effects of an Eight Week Modified Hatha Yoga on the Heart Rate Variability & Stress Response in Injured Workers

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jul 26, 2016

The purposes of this study were 1) to evaluate the effects of modified hatha yoga on the injured ... more The purposes of this study were 1) to evaluate the effects of modified hatha yoga on the injured workers after training for 8 weeks, and 2) to measure heart rate variability (HRV), stress responses, and physical fitness changes in the industrial injured workers. Twenty-six subjects (13 injured workers (IW) and 13 control normal workers (CN), aged between 18 to 60 years, volunteered to participate in this study. All participants were measured HRV, stress responses parameters including electromyography (EMG), respiratory rate, skin temperature and skin conductance. IW group were further divided into two groups; hatha yoga injured workers (YIW) (n=7) and control injured workers (CIW) (n=6). YIW group performed 60- minute/day, 3 days/week for 8 weeks of modified hatha yoga and then all parameters were measured again. Results showed that IW group had a significant increase in LF/HF ratio of HRV (2.41) and skin conductance (2.18 μS) compared to the CN group (HRV= 1.61, skin conductance = 1.24 μS) (p < 0.05). Conclusion: The injury from industrial work disturb balance of PNS and SNS activity. And the 8 week modified hatha yoga could not improve HRV and stress response in YIW group. (Journal of Sports Science and Technology 2016; 16(1) : 55-64) Keywords: Heart rate variability, Workers, Modified hatha yoga *Corresponding author : Pensinee Panasiriwong College of Sports Science and Technology, Mahidol University, Phutthamonthon, Nakorn pathom, Thailand 73170 E-mail: mai.br91@gmail.com

Research paper thumbnail of Effect of 4 Week Simple Balance Exercise on Balance Ability in Thai Elderly

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jun 16, 2015

ABSTRACT

Research paper thumbnail of Physical Fitness Changes in Children After Attending a Sports Summer Day Camp Program 2015 at College of Sports Science and Technology, Mahidol Univesity for 3 Weeks

Journal of Sports Science and Technology - วารสารทางการของสมาคมวิทยาศาสตร์และเทคโนโลยีการกีฬาแห่งประเทศไทย (สวกท), Jun 16, 2015

The aim of this study was to investigate physical fitness of children after participat... more The aim of this study was to investigate physical fitness of children after participating a sports summer day camp 2558 at college of sports science, Mahidol Univesity for 3 weeks. A total of 146 boys (n=81) and girls (n=65), aged 6 to 12, were participated in this study. The physical fitness parameters in this study composed of 1) the body compositions, including the body weight (in kilogram; kg), body mass index (BMI, in kg/m 2 ), and waist circumference (in centimeter; cm), 2) upper and lower muscle strength, including bicep curls in 30 second test (times), standing board jump (in cm), and grip strength (in kg), 3) flexibility (in cm), using sit and reach test, and 4) cardiorespiratoty function (ml/kg/min) using an endurance shuttle run test. Results showed that the significant changes in physical fitness parameters after 3 weeks of summer camping ( p <0.001) were found in waist circumference (decresed from 63.05 + 9.59 cm to 56.38 + 9.51 cm in the boys and from 62.89 + 10.34 cm to 56.69 + 8.80 cm in the girls), the trunk flexibility (decresed from 2.45 + 4.57 cm to -0.29 + 6.19 cm in the boys), the bicep curls of elbow flexion (incresed from 27 + 11 times to 32 + 12 times in the boys), grip strength ( increased from 12.29+4.42 kg to 13.78+4.37 kg in the girls) and the standing board jump ( increased from 110.13 + 20.21 cm to 118.27 + 16.27 cm in the girls). From the results can be concluded that children who participating a sports summer day camp for 3 weeks had improved their physical fitness by reducing waist circumference as well as increasing upper and lower muscle strength and power. However, there were no changes in body weight and BMI in both boys and girls indicated healthy recipes for snacks and lunch meal should be concerned for the next year’s camping program. Moreover, adding the physical activity program to increase trunk flexibility and endurance are also recommenced. (Journal of Sports Science and Technology 2015;15(1): 213-222 )

Research paper thumbnail of Acute Effect of Different Five-Minute Warm-Up Protocols on Flexibility and Sprint Ability in Collegiate Soccer Players

Insufficient warm-up (WU) of substitute soccer players could limit the performance and increase r... more Insufficient warm-up (WU) of substitute soccer players could limit the performance and increase risk of injury. Different WU protocols were designed to help them get an effective WU in a shorter time frame for enhancing their performances. The aim of this study is to find a five-minute WU protocol that can improve flexibility and Repeated Sprint Ability (RSA) with an acceptable fatigue, as compared to no warm up condition. Twelve healthy collegiate male soccer players participated in this study. Subjects performed 4 randomly different warm up protocols on four nonconsecutive days: (a) no warm up (NW); rest of 5 minutes, (b) dynamic warm up (DW); jogging of 2:30 minutes and 2:30-minute of dynamic warm up, (c) dynamic resistance warm up (DRW); DW plus 8 repetitions of body weight squats, and (d) dynamic sprint warm up (DSW); DW plus two 20-m shuttle sprint. Hamstring flexibility, RSA parameters and Borg's RPE scale were measure. Flexibility was significantly improved after performing DRW and DSW, but not significant different in NW and DW, (p<0.01). DSW and DRW protocols significantly improved RSA parameters compared with NW as observed in average time and total time. The fastest time was improved only in DSW protocol (p<0.05). Fatigue for DW, DSW and DRW was not different from NW. Improved flexibility and RSA performance in DSW and DRW would be suggested for substitute soccer players with limited WU time.

Research paper thumbnail of The Feasibility of a 4-Week Home-Based Exercise Training Using Active Video Games on Balance, Motor Proficiency, Foot and Ankle Ability, and Intrinsic Motivation in Children with Chronic Ankle Instability: A Randomized Controlled Trial (Preprint)

BACKGROUND Children with chronic ankle instability (CAI) frequently experience ankle unsteadiness... more BACKGROUND Children with chronic ankle instability (CAI) frequently experience ankle unsteadiness, causing trips, falls, and ankle sprain injuries resulting in poor quality of life. A specific exercise program focused on physical and psychological purposes in children with CAI is needed. OBJECTIVE The purpose of this study was to investigate the feasibility of a 4-week home-based exercise training using active video games (AVGs) on balance, motor proficiency, foot and ankle ability, and intrinsic motivation in children with CAI. METHODS Sixty children with CAI (10 ± 2 years) were randomly assigned to an experimental group (AVGs; n = 30) or a control group (CG; n = 30). The AVGs group played 2-selected video games, i.e., catching fish and Russian Block, while the CG group received the exercise program for CAI. Both programs were scheduled for 30 minutes per day, 3 times per week for four weeks at home. The single-leg stance test was used to assess static balance. The walking forward ...

Research paper thumbnail of Body composition and physical fitness improve after 8 weeks of high-intensity circuit training using body weight in obese women

The Journal of Sports Medicine and Physical Fitness