Antonio Da Silva | Universidade Federal de São Paulo (UNIFESP) (original) (raw)

Papers by Antonio Da Silva

Research paper thumbnail of Manual de exames hormonais

Research paper thumbnail of The effects of preventive rubber band training on shoulder joint imbalance and throwing performance in handball players: A randomized and prospective study

Journal of Bodywork and Movement Therapies, Oct 1, 2017

Objectives: To investigate the effects of a strength training program (STP) using rubber band exe... more Objectives: To investigate the effects of a strength training program (STP) using rubber band exercises. Methods: Twenty-five athletes were divided into two groups: muscular imbalance in the dominant (D) and in the non-dominant (ND) upper limbs. Each group was subdivided into experimental and control groups. Experimental groups performed eighteen sessions of STP. Athletes were submitted to ball throwing and isokinetic strength tests to assess the muscular strength of the shoulder rotator muscles and conventional and functional balance ratios. Results: STP improved external rotator peak torque (18.0±0.8 to 21.3±1.0Nm, p<0.01) and total work (29.3±0.9 to 34.5±1.5J, p<0.01) in the D experimental group, while only total work (34.8±2.5 to 37.6±3.1J, p<0.03) improved in the D control group. The ND experimental group also presented significant improvement in external rotator peak torque (18.8±0.8 to 21.1±1.3Nm, p<0.01) and total work values (29.0±1.4 to 34.6 to 1.6J, p<0.01) while there was no strength improvement in the ND control group. The ND experimental group showed an improvement in conventional (61.5±3.5 to 72.7±3.0%, p=0.03) and functional (1.0±0.1 to 1.6±0.08, p<0.01) ratios. STP did not improve the conventional ratio in the D experimental group. However, STP produced a large effect size. The D experimental group presented an improvement in ball velocity (49.0±2.4 to 52.5±2.2km/h, p=0.04) in standing position throwing. Conclusions: STP improves muscular strength of external rotator muscles and muscular balance.

Research paper thumbnail of Knowledge about sport and exercise science

Health education, Apr 3, 2018

Purpose The purpose of this paper was to assess the knowledge on sport and exercise science held ... more Purpose The purpose of this paper was to assess the knowledge on sport and exercise science held by a sample of Brazilian physiotherapists, nutritionists and physical educators. Design/methodology/approach A cross-sectional research design was used. The answers given by 1,147 professionals (300 physiotherapists, 705 physical educators and 142 nutritionists) who participated in a qualifying process for a specialization course on exercise physiology were analyzed. Questions were analyzed on maximal oxygen uptake (four questions), physical fitness assessment (three questions), physical training (two questions), bioenergetics (one question) and exercise in extreme environments (one question). Findings The results revealed misconceptions held by Brazilian health professionals on a number of concepts related to sport and exercise science, such as maximal oxygen uptake. Practical implications These results reinforce the need for continuing education programs to maximize the quality of the service provided by sport and exercise science professionals in Brazil. Improvements in the undergraduate courses curriculum are also recommended. Originality/value This is the first study to assess misconceptions about sport and exercise science among Brazilian health professionals.

Research paper thumbnail of Knee performance after anterior cruciate ligament reconstruction

Isokinetics and Exercise Science, Aug 19, 2002

The aim of this study was to determine differences in isokinetic performance, hop tests, range of... more The aim of this study was to determine differences in isokinetic performance, hop tests, range of motion and thigh circumference between the involved and uninvolved leg in patients after 4, 5, 6 and 8 months after anterior cruciate ligament (ACL) reconstruction and to investigate the possible correlation between the different evaluation methods. Fourteen male subjects submitted to intra-articular reconstruction of the anterior cruciate ligament with patellar tendon graft. All parameters improved from the 4th to the 8th month post-op. The deficits were more pronounced for the quadriceps than for the hamstrings, which regained full function at 5 months. Quadriceps performance and thigh circumference were impaired even after 8 months. According to the Lysholm Score, all subjects scored at least as good function and 54% had excellent results. There was a positive correlation between quadriceps performance and both single and triple hops (0.51-0.63), whilst for the harmstrings the correlations were weak (0.32-0.44). We conclude that: 1) Individuals with anterior cruciate ligament injury present quadriceps weakness even after 8 months of the reconstructive surgery using patellar tendon graft; 2) when an isokinetic dynamometer is not available, horizontal impulse tests can be used to evaluate quadriceps deficiency; 3) thigh circumference should not be used as a measurement to predict muscle performance; 4) the Lysholm Score is not sensitive to detect limitations in muscle performance.

Research paper thumbnail of Strength Training Using Elastic Bands: Improvement of Muscle Power and Throwing Performance in Young Female Handball Players

Journal of Sport Rehabilitation, May 1, 2017

Context:Imbalance in shoulder-rotator muscles has been considered a risk factor for injuries in h... more Context:Imbalance in shoulder-rotator muscles has been considered a risk factor for injuries in handball. Strength training programs (STPs) may play an important preventive role.Objective:To verify the effects of an STP using elastic bands on shoulder muscles and ball-throwing speed.Design:Randomized and prospective controlled trial.Setting:Exercise physiology laboratory.Participants:Thirty-nine female handball players were randomly assigned to an experimental (EG, n = 21, 15.3 ± 1.1 y) or a control (CG, n = 18, 15.0 ± 0.8 y) group.Intervention:The EG performed the STP with elastic-band progressive exercises for 6 wk before regular handball training, and the CG underwent only their regular training.Main Outcome Measures:Before and after the STP, both groups underwent a ball-throwing-speed test and isokinetic test to assess shoulder internal- (IR) and external-rotator muscle performance.Results:Average power values for IR muscles presented a significant group-vs-time interaction effect (F = 3.9, P = .05); EG presented significantly higher values after the STP (P = .03). Ball speed presented higher values in EG after the STP in standing (P = .04) and jumping (P = .03) throws. IR peak-torque values and balance in shoulder-rotator muscles presented no group-vs-time interaction effect.Conclusions:STP using elastic bands performed for 6 wk was effective to improve muscle power and ball speed for young female handball players.

Research paper thumbnail of Profiling the isokinetic shoulder rotator muscle strength in 13- to 36-year-old male and female handball players

Physical Therapy in Sport, Nov 1, 2013

Objectives: To evaluate the external (ER) and internal rotator (IR) muscles' isokinetic peak torq... more Objectives: To evaluate the external (ER) and internal rotator (IR) muscles' isokinetic peak torque and conventional and functional strength ratios in handball players and controls of different ages. Design: Cross-sectional and descriptive analysis. Setting: Exercise Physiology Laboratory. Participants: A total of 228 participants (108 athletes and 120 controls) were divided into five groups according to age, ranging from 13 to 36 years old. Main outcome measures: Isokinetic tests were performed concentrically at 60 and 300 deg s À1 and eccentrically at 300 deg s À1. Results: The differences between the athletes and controls regarding the peak torque of the ER and IR muscles were significant in males older than 18 years. The peak torque of the IR and ER muscles increased significantly across age in male athletes, but not in female athletes, except in the case of ER peak torque, which differed significantly between 13 and 16 years old. The female athletes presented higher conventional ratios (0.81 AE 0.07) than males (0.66 AE 0.08). Values represent means and standard deviations. Athletes and controls showed mean functional strength ratios below 1.0. Conclusions: Although there were no muscular ratio differences between the athletes and the controls, their ratio values were below the literature-recommended reference values to prevent shoulder injuries.

Research paper thumbnail of Functional exercise capacity in maximal and submaximal activities of individuals with polio sequelae

European Journal of Applied Physiology

Research paper thumbnail of Epilepsia e atividade física: estudos em humanos e animais

Epilepsy is the most common chronic neurological disorder in the world that influences negatively... more Epilepsy is the most common chronic neurological disorder in the world that influences negatively the quality of people's life affected by this disease. Although the favorable effect of physical activity on general health is unquestionable, the appropriate physical exercise for people with epilepsy is still controversial. Studies have shown beneficial effect of physical exercise on frequency of seizures as well as on life quality. However, people with epilepsy frequently are discouraged and excluded from participation in physical exercise due to the fear that the participation in a physical exercise program can precipitate epileptic seizures. Therefore, the aim of this study was to review the effect of physical exercise based on clinical and experimental studies of epilepsy.

Research paper thumbnail of Effect of fatigue caused by a simulated handball game on ball throwing velocity, shoulder muscle strength and balance ratio: a prospective study

BMC sports science, medicine and rehabilitation, 2016

Arm throwing represents a deciding element in handball. Ball velocity, aim accuracy, and dynamic ... more Arm throwing represents a deciding element in handball. Ball velocity, aim accuracy, and dynamic stability of the shoulder are factors that influence throwing effectiveness. The purpose of this study was to examine the influence of muscle fatigue caused by simulated game activities (SGA) on shoulder rotational isokinetic muscle strength, muscle balance and throwing performance, and to examine the relationship between muscle strength and throwing performance. Ten national elite adult handball athletes were evaluated. Isokinetic internal (IR), external (ER) rotators peak torque, and balance ratio were measured before and after SGA. Ball throwing velocity was assessed by radar gun. Both internal (IR) and external (ER) rotators peak torque were significantly lower after SGA (p = 0.0003 and p = 0.02, respectively). However, the deleterious effect was more evident for IR than ER muscles (effect size r = 0.39 and r = 0.18, respectively). Balance ratio before and after SGA did not differ (p...

Research paper thumbnail of Influência Do Exercício Sobre a Produção De Radicais Livres

Revista Brasileira de Atividade Física & Saúde, Sep 12, 2012

Research paper thumbnail of Effect of Intermittent Hypoxic Training Followed by Intermittent Hypoxic Exposure on Aerobic Capacity of Long Distance Runners

Journal of strength and conditioning research / National Strength & Conditioning Association, Jun 7, 2015

Effects of intermittent hypoxic training (IHT) are still controversial and detraining effects rem... more Effects of intermittent hypoxic training (IHT) are still controversial and detraining effects remain unclear. Therefore, we investigated 1) whether IHT improves aerobic capacity; 2) whether aerobic detraining occurs post-IHT; and 3) whether intermittent hypoxic exposure (IHE) at rest reduces a possible aerobic detraining post-IHT. Twenty eight runners [21 men/7 women; 36±2 years; maximal oxygen uptake (V[Combining Dot Above]O2max) 55.4±1.3 mL kg min] participated in a single-blinded placebo-controlled trial. Twice a week, one group performed 6 weeks of IHT (n=11), followed by 4 weeks of IHE (n=11) at rest (IHT/IHE group). Another group performed 6 weeks of IHT (n=10), followed by 4 weeks of normoxic exposure (NE, n=9) at rest (IHT/NE group). A control group performed 6 weeks of normoxic training (NT, n=7), followed by 4 weeks of normoxic exposure (NE, n=6) at rest (NT/NE group). Hematological and submaximal/maximal aerobic measurements were conducted in normoxia at pre-training, pos...

Research paper thumbnail of Força muscular isocinética de jogadores de futebol da seleção paraolímpica brasileira de portadores de paralisia cerebral

Revista Brasileira de Medicina do Esporte, 2005

INTRODUÇÃO E OBJETIVO: A fraqueza muscular, a assimetria de forças e o desequilíbrio entre múscul... more INTRODUÇÃO E OBJETIVO: A fraqueza muscular, a assimetria de forças e o desequilíbrio entre músculos antagonistas são reconhecidamente fatores de risco para lesão dos joelhos. Futebolistas portadores de paralisia cerebral (PC) possivelmente apresentam estes fatores de risco exacerbados em decorrência desta doença e do esporte. O objetivo do presente estudo foi avaliar a presença destes fatores de risco para lesão do joelho em atletas, portadores de PC, da seleção paraolímpica brasileira de futebol. MÉTODO: Vinte e um futebolistas paraolímpicos, portadores de PC, com hemiparesia espástica, submeteram-se à avaliação dos músculos flexores e extensores dos joelhos, por meio do dinamômetro isocinético Cybex 6000. Para análise da força muscular foi medido o pico de torque a 60º/s, que foi utilizado para analisar a deficiência contralateral, a relação entre músculos flexores e extensores do joelho e a fraqueza muscular comparando com valores previstos para indivíduos normais (Neder et al., ...

Research paper thumbnail of Absence of the predisposing factors and signs and symptoms usually associated with overreaching and overtraining in physical fitness centers

Clinics, 2010

The aim of this study was to evaluate the occurrence of the well-known predisposing factors and s... more The aim of this study was to evaluate the occurrence of the well-known predisposing factors and signs and symptoms usually associated with either overreaching or overtraining syndrome in physical fitness centers in Sã o Paulo City, Brazil. METHOD: A questionnaire consisting of 13 question groups pertaining to either predisposing factors (1-7) or signs and symptoms (8-13) was given to 413 subjects. The general training schedule of the volunteers was characterized by workout sessions of 2.18 ¡ 0.04 h for a total of 11.0 ¡ 0.3 h/week for 33 ¡ 2 months independent of the type of exercise performed (walking, running, spinning, bodybuilding and stretching). A mean score was calculated ranging from 1 (completely absent) to 5 (severe) for each question group. A low occurrence was considered to be a question group score lower than 4, which was observed in all 13 question groups. RESULTS: The psychological evaluation by POMS Mood State Questionnaire indicated a normal non-inverted iceberg. The hematological parameters, creatine kinase activity, cortisol, total testosterone and free testosterone concentrations were within the normal ranges for the majority of the volunteers selected for this analysis (n = 60). CONCLUSION: According to the questionnaire score analysis, no predisposing factors or signs and symptoms usually associated with either overreaching or overtraining were detected among the members of physical fitness centers in Sã o Paulo City, Brazil. This observation was corroborated by the absence of any significant hematological or stress hormone level alterations in blood analyses of the majority of the selected volunteers (n = 60).

Research paper thumbnail of Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise

Brazilian Journal of Physical Therapy, 2014

Research paper thumbnail of Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures

Clinics, 2011

To compare the isokinetic shoulder performance after surgical treatment to that after non-surgica... more To compare the isokinetic shoulder performance after surgical treatment to that after non-surgical treatment for pectoralis major muscle rupture. METHODS: We assessed 33 pectoralis major muscle ruptures (18 treated non-surgically and 15 treated surgically). Horizontal abduction and adduction as well as external and internal rotation at 60 and 120 degrees/s were tested in both upper limbs. Peak torque, total work, contralateral deficiency, and the peak torque agonist-to-antagonist ratio were measured. RESULTS: Contralateral muscular deficiency did not differ between the surgical and non-surgical treatment modalities. However, the surgical group presented twice the number of athletes with clinically acceptable contralateral deficiency (,20%) for internal rotators compared to the non-surgical group. The peak torque ratio between the external and internal rotator muscles revealed a similar deficit of the external rotation in both groups and on both sides (surgical, 61.60% and 57.80% and non-surgical, 62.06% and 54.06%, for the dominant and nondominant sides, respectively). The peak torque ratio revealed that the horizontal adduction muscles on the injured side showed similar weakness in both groups (surgical, 86.27%; non-surgical, 98.61%). CONCLUSIONS: This study included the largest single series of athletes reported to date for this type of injury. A comparative analysis of muscular strength and balance showed no differences between the treatment modalities for pectoralis major muscle rupture. However, the number of significant clinical deficiencies was lower in the surgical group than in the non-surgical group, and both treatment modalities require greater attention to the rehabilitation process, especially for the recovery of muscle strength and balance.

Research paper thumbnail of Acute strength exercise and the involvement of small or large muscle mass on plasma brain-derived neurotrophic factor levels

Clinics, 2010

OBJECTIVE: Blood neurotrophins, such as the brain-derived neurotrophic factor, are considered to ... more OBJECTIVE: Blood neurotrophins, such as the brain-derived neurotrophic factor, are considered to be of great importance in mediating the benefits of physical exercise. In this study, the effect of acute strength exercise and the involvement of small versus large muscle mass on the levels of plasma brain-derived neurotrophic factor were evaluated in healthy individuals. METHODS: The concentric strengths of knee (large) and elbow (small) flexor and extensor muscles were measured on two separate days. Venous blood samples were obtained from 16 healthy subjects before and after exercise. RESULTS: The levels of brain-derived neurotrophic factor in the plasma did not significantly increase after both arm and leg exercise. There was no significant difference in the plasma levels of the brain-derived neurotrophic factor in the arms and legs. CONCLUSION: The present results demonstrate that acute strength exercise does not induce significant alterations in the levels of brain-derived neurotrophic factor plasma concentrations in healthy individuals. Considering that its levels may be affected by various factors, such as exercise, these findings suggest that the type of exercise program may be a decisive factor in altering peripheral brain-derived neurotrophic factor.

Research paper thumbnail of Assessment of functional impairment after knee anterior cruciate ligament reconstruction using cardiorespiratory parameters: a cross-sectional study

BMC musculoskeletal disorders, Jan 20, 2014

A dynamic sub-maximum exercise with the same absolute intensity, performed with different muscle ... more A dynamic sub-maximum exercise with the same absolute intensity, performed with different muscle groups, may present exacerbated cardiorespiratory responses. Therefore, cardiorespiratory responses to unilateral exercise may identify bilateral differences. The purpose of this study was to verify whether the cardiorespiratory responses to lower limb exercise display counter-lateral differences, and if they could be used to assist athletes and health professionals involved in rehabilitation. Nine individuals participated in this cross-sectional study. They had been treated in a private rehabilitation clinic and submitted to intra-articular reconstruction of the anterior cruciate ligament. The cycling exercise with the same sub-maximal intensity and with one lower limb was used to gather data. Cardiorespiratory responses to exercise were compared between exercises performed with the involved and uninvolved limb after five minutes of exercise. Cardiorespiratory responses to exercise perf...

Research paper thumbnail of Efeitos benéficos do exercício físico nas epilepsias: o judô faz parte deste contexto?

Journal of Epilepsy and Clinical Neurophysiology, 2007

INTRODUÇÃO: Pessoas com epilepsia tem sido constantemente desaconselhadas a participarem de ativi... more INTRODUÇÃO: Pessoas com epilepsia tem sido constantemente desaconselhadas a participarem de atividades físicas ou esportivas por receio do exercício provocar crises epilépticas. Apesar da atitude médica atual recomendando a participação em atividades esportivas, o estigma ainda persiste e as pessoas com epilepsia continuam menos ativas que a população em geral. OBJETIVOS: Neste sentido, vários estudos clínicos e experimentais têm demonstrado um efeito benéfico do exercício físico na epilepsia. O judô é um esporte tradicional e popular e pessoas com epilepsia freqüentemente perguntam aos médicos se podem participar deste tipo de esporte. CONCLUSÃO: Baseado nestas questões, este artigo de revisão propõe avaliar os riscos e benefícios da atividade física em pessoas com epilepsia e discutir o papel do judô neste contexto.

Research paper thumbnail of Lung function in post-poliomyelitis syndrome: a cross-sectional study

Jornal Brasileiro de Pneumologia, 2013

OBJECTIVE: To compare lung function between patients with post-poliomyelitis syndrome and those w... more OBJECTIVE: To compare lung function between patients with post-poliomyelitis syndrome and those with sequelae of paralytic poliomyelitis (without any signs or symptoms of post-poliomyelitis syndrome), as well as between patients with post-poliomyelitis syndrome and healthy controls. METHODS: Twenty-nine male participants were assigned to one of three groups: control; poliomyelitis (comprising patients who had had paralytic poliomyelitis but had not developed post-poliomyelitis syndrome); and post-poliomyelitis syndrome. Volunteers underwent lung function measurements (spirometry and respiratory muscle strength assessment). RESULTS: The results of the spirometric assessment revealed no significant differences among the groups except for an approximately 27% lower mean maximal voluntary ventilation in the post-poliomyelitis syndrome group when compared with the control group (p = 0.0127). Nevertheless, the maximal voluntary ventilation values for the post-poliomyelitis group were comp...

Research paper thumbnail of Bdnf Response To Arms Versus Legs Strength Exercise

Medicine & Science in Sports & Exercise, 2010

Blood neurotrophins like brain-derived neurotrophic factor (BDNF) are considered to be of major i... more Blood neurotrophins like brain-derived neurotrophic factor (BDNF) are considered to be of major importance for mediating the benefits of physical exercise on the brain by the induction of central and peripheral growth factor cascades. Increases of blood BDNF concentrations in humans have been reported after acute intensive endurance exercise, but not after acute moderate endurance exercise. Concerning strength exercise, although basal BDNF level is not altered significantly after strength training, we could suggest that acute intensive strength exercise might also increases BDNF blood concentrations. PURPOSE: For this purpose, we performed an intensive strength protocol, through an isokinetic muscle exercise and analyzed the effect of small (arms) versus large (legs) muscle mass on BDNF blood release. METHODS: Sixteen young, healthy male subjects participated in the study. Knee and elbow muscle performance were determined using a Cybex 6000 isokinetic dynamometer (Ronkonkoma, NY) in two separated days. Five series of ten repetitions during 60º/s were performed after 5 min warm up in a stationary bicycle. Successive series was separated by 40 seconds of rest. RESULTS: BDNF plasma concentrations did not alter significantly after acute intensive strength sessions. No significant differences were observed among arms and legs paradigms both at rest and after exercise. CONCLUSION: Our data demonstrated that acute intense muscle contractions (strength exercise) are not able to altered plasma BDNF, suggesting that the type of exercise is a critical factor to provoke plasma BDNF release.

Research paper thumbnail of Manual de exames hormonais

Research paper thumbnail of The effects of preventive rubber band training on shoulder joint imbalance and throwing performance in handball players: A randomized and prospective study

Journal of Bodywork and Movement Therapies, Oct 1, 2017

Objectives: To investigate the effects of a strength training program (STP) using rubber band exe... more Objectives: To investigate the effects of a strength training program (STP) using rubber band exercises. Methods: Twenty-five athletes were divided into two groups: muscular imbalance in the dominant (D) and in the non-dominant (ND) upper limbs. Each group was subdivided into experimental and control groups. Experimental groups performed eighteen sessions of STP. Athletes were submitted to ball throwing and isokinetic strength tests to assess the muscular strength of the shoulder rotator muscles and conventional and functional balance ratios. Results: STP improved external rotator peak torque (18.0±0.8 to 21.3±1.0Nm, p<0.01) and total work (29.3±0.9 to 34.5±1.5J, p<0.01) in the D experimental group, while only total work (34.8±2.5 to 37.6±3.1J, p<0.03) improved in the D control group. The ND experimental group also presented significant improvement in external rotator peak torque (18.8±0.8 to 21.1±1.3Nm, p<0.01) and total work values (29.0±1.4 to 34.6 to 1.6J, p<0.01) while there was no strength improvement in the ND control group. The ND experimental group showed an improvement in conventional (61.5±3.5 to 72.7±3.0%, p=0.03) and functional (1.0±0.1 to 1.6±0.08, p<0.01) ratios. STP did not improve the conventional ratio in the D experimental group. However, STP produced a large effect size. The D experimental group presented an improvement in ball velocity (49.0±2.4 to 52.5±2.2km/h, p=0.04) in standing position throwing. Conclusions: STP improves muscular strength of external rotator muscles and muscular balance.

Research paper thumbnail of Knowledge about sport and exercise science

Health education, Apr 3, 2018

Purpose The purpose of this paper was to assess the knowledge on sport and exercise science held ... more Purpose The purpose of this paper was to assess the knowledge on sport and exercise science held by a sample of Brazilian physiotherapists, nutritionists and physical educators. Design/methodology/approach A cross-sectional research design was used. The answers given by 1,147 professionals (300 physiotherapists, 705 physical educators and 142 nutritionists) who participated in a qualifying process for a specialization course on exercise physiology were analyzed. Questions were analyzed on maximal oxygen uptake (four questions), physical fitness assessment (three questions), physical training (two questions), bioenergetics (one question) and exercise in extreme environments (one question). Findings The results revealed misconceptions held by Brazilian health professionals on a number of concepts related to sport and exercise science, such as maximal oxygen uptake. Practical implications These results reinforce the need for continuing education programs to maximize the quality of the service provided by sport and exercise science professionals in Brazil. Improvements in the undergraduate courses curriculum are also recommended. Originality/value This is the first study to assess misconceptions about sport and exercise science among Brazilian health professionals.

Research paper thumbnail of Knee performance after anterior cruciate ligament reconstruction

Isokinetics and Exercise Science, Aug 19, 2002

The aim of this study was to determine differences in isokinetic performance, hop tests, range of... more The aim of this study was to determine differences in isokinetic performance, hop tests, range of motion and thigh circumference between the involved and uninvolved leg in patients after 4, 5, 6 and 8 months after anterior cruciate ligament (ACL) reconstruction and to investigate the possible correlation between the different evaluation methods. Fourteen male subjects submitted to intra-articular reconstruction of the anterior cruciate ligament with patellar tendon graft. All parameters improved from the 4th to the 8th month post-op. The deficits were more pronounced for the quadriceps than for the hamstrings, which regained full function at 5 months. Quadriceps performance and thigh circumference were impaired even after 8 months. According to the Lysholm Score, all subjects scored at least as good function and 54% had excellent results. There was a positive correlation between quadriceps performance and both single and triple hops (0.51-0.63), whilst for the harmstrings the correlations were weak (0.32-0.44). We conclude that: 1) Individuals with anterior cruciate ligament injury present quadriceps weakness even after 8 months of the reconstructive surgery using patellar tendon graft; 2) when an isokinetic dynamometer is not available, horizontal impulse tests can be used to evaluate quadriceps deficiency; 3) thigh circumference should not be used as a measurement to predict muscle performance; 4) the Lysholm Score is not sensitive to detect limitations in muscle performance.

Research paper thumbnail of Strength Training Using Elastic Bands: Improvement of Muscle Power and Throwing Performance in Young Female Handball Players

Journal of Sport Rehabilitation, May 1, 2017

Context:Imbalance in shoulder-rotator muscles has been considered a risk factor for injuries in h... more Context:Imbalance in shoulder-rotator muscles has been considered a risk factor for injuries in handball. Strength training programs (STPs) may play an important preventive role.Objective:To verify the effects of an STP using elastic bands on shoulder muscles and ball-throwing speed.Design:Randomized and prospective controlled trial.Setting:Exercise physiology laboratory.Participants:Thirty-nine female handball players were randomly assigned to an experimental (EG, n = 21, 15.3 ± 1.1 y) or a control (CG, n = 18, 15.0 ± 0.8 y) group.Intervention:The EG performed the STP with elastic-band progressive exercises for 6 wk before regular handball training, and the CG underwent only their regular training.Main Outcome Measures:Before and after the STP, both groups underwent a ball-throwing-speed test and isokinetic test to assess shoulder internal- (IR) and external-rotator muscle performance.Results:Average power values for IR muscles presented a significant group-vs-time interaction effect (F = 3.9, P = .05); EG presented significantly higher values after the STP (P = .03). Ball speed presented higher values in EG after the STP in standing (P = .04) and jumping (P = .03) throws. IR peak-torque values and balance in shoulder-rotator muscles presented no group-vs-time interaction effect.Conclusions:STP using elastic bands performed for 6 wk was effective to improve muscle power and ball speed for young female handball players.

Research paper thumbnail of Profiling the isokinetic shoulder rotator muscle strength in 13- to 36-year-old male and female handball players

Physical Therapy in Sport, Nov 1, 2013

Objectives: To evaluate the external (ER) and internal rotator (IR) muscles' isokinetic peak torq... more Objectives: To evaluate the external (ER) and internal rotator (IR) muscles' isokinetic peak torque and conventional and functional strength ratios in handball players and controls of different ages. Design: Cross-sectional and descriptive analysis. Setting: Exercise Physiology Laboratory. Participants: A total of 228 participants (108 athletes and 120 controls) were divided into five groups according to age, ranging from 13 to 36 years old. Main outcome measures: Isokinetic tests were performed concentrically at 60 and 300 deg s À1 and eccentrically at 300 deg s À1. Results: The differences between the athletes and controls regarding the peak torque of the ER and IR muscles were significant in males older than 18 years. The peak torque of the IR and ER muscles increased significantly across age in male athletes, but not in female athletes, except in the case of ER peak torque, which differed significantly between 13 and 16 years old. The female athletes presented higher conventional ratios (0.81 AE 0.07) than males (0.66 AE 0.08). Values represent means and standard deviations. Athletes and controls showed mean functional strength ratios below 1.0. Conclusions: Although there were no muscular ratio differences between the athletes and the controls, their ratio values were below the literature-recommended reference values to prevent shoulder injuries.

Research paper thumbnail of Functional exercise capacity in maximal and submaximal activities of individuals with polio sequelae

European Journal of Applied Physiology

Research paper thumbnail of Epilepsia e atividade física: estudos em humanos e animais

Epilepsy is the most common chronic neurological disorder in the world that influences negatively... more Epilepsy is the most common chronic neurological disorder in the world that influences negatively the quality of people's life affected by this disease. Although the favorable effect of physical activity on general health is unquestionable, the appropriate physical exercise for people with epilepsy is still controversial. Studies have shown beneficial effect of physical exercise on frequency of seizures as well as on life quality. However, people with epilepsy frequently are discouraged and excluded from participation in physical exercise due to the fear that the participation in a physical exercise program can precipitate epileptic seizures. Therefore, the aim of this study was to review the effect of physical exercise based on clinical and experimental studies of epilepsy.

Research paper thumbnail of Effect of fatigue caused by a simulated handball game on ball throwing velocity, shoulder muscle strength and balance ratio: a prospective study

BMC sports science, medicine and rehabilitation, 2016

Arm throwing represents a deciding element in handball. Ball velocity, aim accuracy, and dynamic ... more Arm throwing represents a deciding element in handball. Ball velocity, aim accuracy, and dynamic stability of the shoulder are factors that influence throwing effectiveness. The purpose of this study was to examine the influence of muscle fatigue caused by simulated game activities (SGA) on shoulder rotational isokinetic muscle strength, muscle balance and throwing performance, and to examine the relationship between muscle strength and throwing performance. Ten national elite adult handball athletes were evaluated. Isokinetic internal (IR), external (ER) rotators peak torque, and balance ratio were measured before and after SGA. Ball throwing velocity was assessed by radar gun. Both internal (IR) and external (ER) rotators peak torque were significantly lower after SGA (p = 0.0003 and p = 0.02, respectively). However, the deleterious effect was more evident for IR than ER muscles (effect size r = 0.39 and r = 0.18, respectively). Balance ratio before and after SGA did not differ (p...

Research paper thumbnail of Influência Do Exercício Sobre a Produção De Radicais Livres

Revista Brasileira de Atividade Física & Saúde, Sep 12, 2012

Research paper thumbnail of Effect of Intermittent Hypoxic Training Followed by Intermittent Hypoxic Exposure on Aerobic Capacity of Long Distance Runners

Journal of strength and conditioning research / National Strength & Conditioning Association, Jun 7, 2015

Effects of intermittent hypoxic training (IHT) are still controversial and detraining effects rem... more Effects of intermittent hypoxic training (IHT) are still controversial and detraining effects remain unclear. Therefore, we investigated 1) whether IHT improves aerobic capacity; 2) whether aerobic detraining occurs post-IHT; and 3) whether intermittent hypoxic exposure (IHE) at rest reduces a possible aerobic detraining post-IHT. Twenty eight runners [21 men/7 women; 36±2 years; maximal oxygen uptake (V[Combining Dot Above]O2max) 55.4±1.3 mL kg min] participated in a single-blinded placebo-controlled trial. Twice a week, one group performed 6 weeks of IHT (n=11), followed by 4 weeks of IHE (n=11) at rest (IHT/IHE group). Another group performed 6 weeks of IHT (n=10), followed by 4 weeks of normoxic exposure (NE, n=9) at rest (IHT/NE group). A control group performed 6 weeks of normoxic training (NT, n=7), followed by 4 weeks of normoxic exposure (NE, n=6) at rest (NT/NE group). Hematological and submaximal/maximal aerobic measurements were conducted in normoxia at pre-training, pos...

Research paper thumbnail of Força muscular isocinética de jogadores de futebol da seleção paraolímpica brasileira de portadores de paralisia cerebral

Revista Brasileira de Medicina do Esporte, 2005

INTRODUÇÃO E OBJETIVO: A fraqueza muscular, a assimetria de forças e o desequilíbrio entre múscul... more INTRODUÇÃO E OBJETIVO: A fraqueza muscular, a assimetria de forças e o desequilíbrio entre músculos antagonistas são reconhecidamente fatores de risco para lesão dos joelhos. Futebolistas portadores de paralisia cerebral (PC) possivelmente apresentam estes fatores de risco exacerbados em decorrência desta doença e do esporte. O objetivo do presente estudo foi avaliar a presença destes fatores de risco para lesão do joelho em atletas, portadores de PC, da seleção paraolímpica brasileira de futebol. MÉTODO: Vinte e um futebolistas paraolímpicos, portadores de PC, com hemiparesia espástica, submeteram-se à avaliação dos músculos flexores e extensores dos joelhos, por meio do dinamômetro isocinético Cybex 6000. Para análise da força muscular foi medido o pico de torque a 60º/s, que foi utilizado para analisar a deficiência contralateral, a relação entre músculos flexores e extensores do joelho e a fraqueza muscular comparando com valores previstos para indivíduos normais (Neder et al., ...

Research paper thumbnail of Absence of the predisposing factors and signs and symptoms usually associated with overreaching and overtraining in physical fitness centers

Clinics, 2010

The aim of this study was to evaluate the occurrence of the well-known predisposing factors and s... more The aim of this study was to evaluate the occurrence of the well-known predisposing factors and signs and symptoms usually associated with either overreaching or overtraining syndrome in physical fitness centers in Sã o Paulo City, Brazil. METHOD: A questionnaire consisting of 13 question groups pertaining to either predisposing factors (1-7) or signs and symptoms (8-13) was given to 413 subjects. The general training schedule of the volunteers was characterized by workout sessions of 2.18 ¡ 0.04 h for a total of 11.0 ¡ 0.3 h/week for 33 ¡ 2 months independent of the type of exercise performed (walking, running, spinning, bodybuilding and stretching). A mean score was calculated ranging from 1 (completely absent) to 5 (severe) for each question group. A low occurrence was considered to be a question group score lower than 4, which was observed in all 13 question groups. RESULTS: The psychological evaluation by POMS Mood State Questionnaire indicated a normal non-inverted iceberg. The hematological parameters, creatine kinase activity, cortisol, total testosterone and free testosterone concentrations were within the normal ranges for the majority of the volunteers selected for this analysis (n = 60). CONCLUSION: According to the questionnaire score analysis, no predisposing factors or signs and symptoms usually associated with either overreaching or overtraining were detected among the members of physical fitness centers in Sã o Paulo City, Brazil. This observation was corroborated by the absence of any significant hematological or stress hormone level alterations in blood analyses of the majority of the selected volunteers (n = 60).

Research paper thumbnail of Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise

Brazilian Journal of Physical Therapy, 2014

Research paper thumbnail of Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures

Clinics, 2011

To compare the isokinetic shoulder performance after surgical treatment to that after non-surgica... more To compare the isokinetic shoulder performance after surgical treatment to that after non-surgical treatment for pectoralis major muscle rupture. METHODS: We assessed 33 pectoralis major muscle ruptures (18 treated non-surgically and 15 treated surgically). Horizontal abduction and adduction as well as external and internal rotation at 60 and 120 degrees/s were tested in both upper limbs. Peak torque, total work, contralateral deficiency, and the peak torque agonist-to-antagonist ratio were measured. RESULTS: Contralateral muscular deficiency did not differ between the surgical and non-surgical treatment modalities. However, the surgical group presented twice the number of athletes with clinically acceptable contralateral deficiency (,20%) for internal rotators compared to the non-surgical group. The peak torque ratio between the external and internal rotator muscles revealed a similar deficit of the external rotation in both groups and on both sides (surgical, 61.60% and 57.80% and non-surgical, 62.06% and 54.06%, for the dominant and nondominant sides, respectively). The peak torque ratio revealed that the horizontal adduction muscles on the injured side showed similar weakness in both groups (surgical, 86.27%; non-surgical, 98.61%). CONCLUSIONS: This study included the largest single series of athletes reported to date for this type of injury. A comparative analysis of muscular strength and balance showed no differences between the treatment modalities for pectoralis major muscle rupture. However, the number of significant clinical deficiencies was lower in the surgical group than in the non-surgical group, and both treatment modalities require greater attention to the rehabilitation process, especially for the recovery of muscle strength and balance.

Research paper thumbnail of Acute strength exercise and the involvement of small or large muscle mass on plasma brain-derived neurotrophic factor levels

Clinics, 2010

OBJECTIVE: Blood neurotrophins, such as the brain-derived neurotrophic factor, are considered to ... more OBJECTIVE: Blood neurotrophins, such as the brain-derived neurotrophic factor, are considered to be of great importance in mediating the benefits of physical exercise. In this study, the effect of acute strength exercise and the involvement of small versus large muscle mass on the levels of plasma brain-derived neurotrophic factor were evaluated in healthy individuals. METHODS: The concentric strengths of knee (large) and elbow (small) flexor and extensor muscles were measured on two separate days. Venous blood samples were obtained from 16 healthy subjects before and after exercise. RESULTS: The levels of brain-derived neurotrophic factor in the plasma did not significantly increase after both arm and leg exercise. There was no significant difference in the plasma levels of the brain-derived neurotrophic factor in the arms and legs. CONCLUSION: The present results demonstrate that acute strength exercise does not induce significant alterations in the levels of brain-derived neurotrophic factor plasma concentrations in healthy individuals. Considering that its levels may be affected by various factors, such as exercise, these findings suggest that the type of exercise program may be a decisive factor in altering peripheral brain-derived neurotrophic factor.

Research paper thumbnail of Assessment of functional impairment after knee anterior cruciate ligament reconstruction using cardiorespiratory parameters: a cross-sectional study

BMC musculoskeletal disorders, Jan 20, 2014

A dynamic sub-maximum exercise with the same absolute intensity, performed with different muscle ... more A dynamic sub-maximum exercise with the same absolute intensity, performed with different muscle groups, may present exacerbated cardiorespiratory responses. Therefore, cardiorespiratory responses to unilateral exercise may identify bilateral differences. The purpose of this study was to verify whether the cardiorespiratory responses to lower limb exercise display counter-lateral differences, and if they could be used to assist athletes and health professionals involved in rehabilitation. Nine individuals participated in this cross-sectional study. They had been treated in a private rehabilitation clinic and submitted to intra-articular reconstruction of the anterior cruciate ligament. The cycling exercise with the same sub-maximal intensity and with one lower limb was used to gather data. Cardiorespiratory responses to exercise were compared between exercises performed with the involved and uninvolved limb after five minutes of exercise. Cardiorespiratory responses to exercise perf...

Research paper thumbnail of Efeitos benéficos do exercício físico nas epilepsias: o judô faz parte deste contexto?

Journal of Epilepsy and Clinical Neurophysiology, 2007

INTRODUÇÃO: Pessoas com epilepsia tem sido constantemente desaconselhadas a participarem de ativi... more INTRODUÇÃO: Pessoas com epilepsia tem sido constantemente desaconselhadas a participarem de atividades físicas ou esportivas por receio do exercício provocar crises epilépticas. Apesar da atitude médica atual recomendando a participação em atividades esportivas, o estigma ainda persiste e as pessoas com epilepsia continuam menos ativas que a população em geral. OBJETIVOS: Neste sentido, vários estudos clínicos e experimentais têm demonstrado um efeito benéfico do exercício físico na epilepsia. O judô é um esporte tradicional e popular e pessoas com epilepsia freqüentemente perguntam aos médicos se podem participar deste tipo de esporte. CONCLUSÃO: Baseado nestas questões, este artigo de revisão propõe avaliar os riscos e benefícios da atividade física em pessoas com epilepsia e discutir o papel do judô neste contexto.

Research paper thumbnail of Lung function in post-poliomyelitis syndrome: a cross-sectional study

Jornal Brasileiro de Pneumologia, 2013

OBJECTIVE: To compare lung function between patients with post-poliomyelitis syndrome and those w... more OBJECTIVE: To compare lung function between patients with post-poliomyelitis syndrome and those with sequelae of paralytic poliomyelitis (without any signs or symptoms of post-poliomyelitis syndrome), as well as between patients with post-poliomyelitis syndrome and healthy controls. METHODS: Twenty-nine male participants were assigned to one of three groups: control; poliomyelitis (comprising patients who had had paralytic poliomyelitis but had not developed post-poliomyelitis syndrome); and post-poliomyelitis syndrome. Volunteers underwent lung function measurements (spirometry and respiratory muscle strength assessment). RESULTS: The results of the spirometric assessment revealed no significant differences among the groups except for an approximately 27% lower mean maximal voluntary ventilation in the post-poliomyelitis syndrome group when compared with the control group (p = 0.0127). Nevertheless, the maximal voluntary ventilation values for the post-poliomyelitis group were comp...

Research paper thumbnail of Bdnf Response To Arms Versus Legs Strength Exercise

Medicine & Science in Sports & Exercise, 2010

Blood neurotrophins like brain-derived neurotrophic factor (BDNF) are considered to be of major i... more Blood neurotrophins like brain-derived neurotrophic factor (BDNF) are considered to be of major importance for mediating the benefits of physical exercise on the brain by the induction of central and peripheral growth factor cascades. Increases of blood BDNF concentrations in humans have been reported after acute intensive endurance exercise, but not after acute moderate endurance exercise. Concerning strength exercise, although basal BDNF level is not altered significantly after strength training, we could suggest that acute intensive strength exercise might also increases BDNF blood concentrations. PURPOSE: For this purpose, we performed an intensive strength protocol, through an isokinetic muscle exercise and analyzed the effect of small (arms) versus large (legs) muscle mass on BDNF blood release. METHODS: Sixteen young, healthy male subjects participated in the study. Knee and elbow muscle performance were determined using a Cybex 6000 isokinetic dynamometer (Ronkonkoma, NY) in two separated days. Five series of ten repetitions during 60º/s were performed after 5 min warm up in a stationary bicycle. Successive series was separated by 40 seconds of rest. RESULTS: BDNF plasma concentrations did not alter significantly after acute intensive strength sessions. No significant differences were observed among arms and legs paradigms both at rest and after exercise. CONCLUSION: Our data demonstrated that acute intense muscle contractions (strength exercise) are not able to altered plasma BDNF, suggesting that the type of exercise is a critical factor to provoke plasma BDNF release.