Navid Lotfi - Academia.edu (original) (raw)
Papers by Navid Lotfi
Fiziceskoe Vospitanie Studentov, Mar 1, 2011
The purpose of this study was to investigate the changes in physiological parameters in cadet wre... more The purpose of this study was to investigate the changes in physiological parameters in cadet wrestlers following a 4-week general preparation phase of training. The physiological parameters included cardiovascular endurance, muscular endurance, speed, agility, flexibility, anaerobic power and body composition. In experiment took part 15 cadet wrestles at the age of 15 years. The testing was conducted twice, before and after the 4-week training period. Бахман Мирзеи, Фарад Рахмани-Ниа, Дэвид Керби, Иоанис Барбас, Навид Лотфи. Изменения в физиологических параметрах у курсантов борцов в 4-недельном цикле подготовки. Цель исследования: изучить изменения в физиологических параметрах у курсантов борцов в 4-недельном цикле подготовки. В исследовании рассмотрены физиологические параметры, включающие сердечно-сосудистую выносливость, мышечную выносливость, скорость, быстроту, изменчивость, анаэробную силу и состав тела. В эксперименте принимали участие 15 курсантов борцов в возрасте 15 лет. Эксперимент проводился дважды, до и после 4-недельной общей фазой подготовки. Бахман Мірзеї, Фарад Рахмані-Ніа, Девід Кєрбі, Іоаніс Барбас, Навід Лотфі. Зміни у фізіологічних параметрах у кадетів борців у 4-тижневому циклі підготовки. Мета дослідження: вивчити зміни у фізіологічних параметрах у курсантів борців у 4-тижневому циклі підготовки. У дослідженні розглянуто фізіологічні параметри, які містять серцево-судинну витривалість, м'язову витривалість, швидкість, меткість, мінливість, анаеробна сила та склад тіла. У дослідженні приймали участь 14 курсантів борців у віці 15 років. Дослідження проводилося двічі, до та після 4-тижневої загальної підготовки.
Annotation: Purpose: The purpose of the present study was to investigate the relationship between... more Annotation: Purpose: The purpose of the present study was to investigate the relationship between anthropometric parameters, body composition and explosive power in cadet wrestlers. Methods: Seventeen male cadet wrestlers (age = 15.6 ± 0.73 yrs) from the Kurdistan province wrestling clubs participated in this study. Body composition (percent body fat), anthropometric parameters (height, sitting height, arm-span, upper arm length, leg length, upper leg length, arm circumference, middle thigh and calf circumference), explosive power (standing long jump and Medicine ball throw tests) were measured. Results: Explosive power of upper body was significantly correlated with sitting height arm-span, upper arm length, arm circumference, weight (p < 0.01) and %BF (p < 0.05). Explosive power of lower body was significantly correlated with sitting height, arm-span and weight (p<0.01). No significant correlation was found between explosive power of lower body and leg length, upper leg l...
Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 2014
Purpose: The purpose of the present study was to determine the appropriate rest time between sets... more Purpose: The purpose of the present study was to determine the appropriate rest time between sets during weight training with light load. Material: Seventeen cadet wrestlers (age =16.7В±0.6 yrs.; height =169.2В±8.2 cm; and weight =51.4В±7.9 kg) were recruited from wrestling clubs in the Iranian province of Kurdistan and served as subjects in this study. This study was conducted over seven sessions with 48 hours recovery between sessions. In the first session, the characteristic features of subjects were recorded and the one repetition maximum in the bench press test was determined for each subject. On 6 separate occasions, subjects performed a 4 set of bench press at 60% 1RM with a 90 and 240 seconds rest interval until volitional fatigue. The numbers of repetition performed by the subjects, and also, cortisol and testosterone levels and 1RM were recorded. The results showed that there was a significant difference in the sustainability of repetitions during 4 sets bench press with 6...
مجله پژوهش در علوم توانبخشی, 2011
چکیده مقدمه: از آن جائی که حفظ تعادل[1] یکی از شاخص های تعیین استقلال افراد سالمند به شمار می رود... more چکیده مقدمه: از آن جائی که حفظ تعادل[1] یکی از شاخص های تعیین استقلال افراد سالمند به شمار می رود، بررسی و تشخیص عوامل موثر بر تغییرات تعادل بویژه اثرات انواع قراردادهای[2] تمرین ورزشی بر تعادل از موضوعات قابل بررسی است که مورد توجه محققان قرار گرفته است. هدف مطالعه حاضر بررسی مقایسه ای اثر تمرینات تعادلی در آب، تمرینات ذهنی و تمرینات ترکیبی (ذهنی و تعادلی در آب) بر تعادل مردان سالمند سالم بود. مواد و روش ها: تعداد 120 نفر از سالمندان، سن 14/14 ±07/65 سال، وزن 31/3±86/71 کیلوگرم و قد 57/3 ±2/173 سانتی متر، انتخاب و به صورت تصادفی در 4 گروه] گروه اول تمرینات تعادلی در آب (30 نفر)، گروه دوم تمرينات ذهني (30 نفر)، گروه سوم تمرین ترکیبی تعادلی در آب و تمرين ذهني (30 نفر)، گروه چهارم بدون تمرین یا کنترل (30 نفر)[ طبقهبندی شدند. براي برآورد تعادل آزمودني ها از آزمون Y[3] در سه جهت استفاده شد. سپس در مورد گروه تمرینی تعادلی در آب، تمرینات در آب با هدف افزایش تعادل آزمودنیها به مدت شش هفته و هر هفته به مدت سه جلسه و هر جلسه به مدت یک ساعت انجام شد. در مورد گروه تمرینات ذهنی مدت تمرين ذهنی...
Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 2013
The purpose of this study was to investigation of the effects of two different dose of BCAA suppl... more The purpose of this study was to investigation of the effects of two different dose of BCAA supplementation on serum indices of muscle damage and soreness in soccer players. 30 male soccer players (age: 20.2+-0.6 yr) participated as subjects in this study. Subjects were randomly divided into three groups (double-blind design). All subjects performed lower- body resistance exercise (6 sets, 10 repetitions, 70% 1RM). The BCAA was given at doses of 200 and 450 mg.kg -1 BW for supplemental groups 1 and 2, respectively, 30 minutes before and after to exercise tests and carbohydrate was given at dose of 200 mg.kg -1 BW for placebo group. To identify enzymes activity (IU/L), venous blood samples were collected 30 min prior to exercise and at 24 and 48 hrs post exercise. Data were statistically analyzed using repeated measures ANOVA and Bonfferoni test. Baseline CK, CK-MB and muscle soreness were determined 30 minutes before the exercise test. Baseline serum values for CK, CK-MB and baselin...
JOURNAL OF RESEARCH IN REHABILITATION SCIENCES, 2010
Page 1. ∗ < < > > Email: Ssajadh.abhar@gmail.com 1-< < > > 2-< > &g... more Page 1. ∗ < < > > Email: Ssajadh.abhar@gmail.com 1-< < > > 2-< > > < 3 - < < > < 6/ 2/ 89 1 > > < > > 1 < 2 < 3 : > ) Balance ( @ > <> Protocol ( > > < > ...
The purpose of this study was to evaluation and comparison of VO2max assessment models in student... more The purpose of this study was to evaluation and comparison of VO2max assessment models in students. Thirty students from high schools of Ardabil city were selected randomly and served as subjects in this study (age: 15.73±0.69 year, height: 169.46±8.1 cm, weight: 61.70±9.32 Kg). Subjects were divided into two groups. In one group Rockport test was used to estimate their VO2max and in other group Balk test was used for the same purpose. Also, the VO2max of both groups were examined by a standard treadmill test and the results were compared with the results of field tests. The one way of ANOVA and Tukey’s post-hoc tests were used for data analysis (p>0/05). The results showed that there were significant differences between the results of the field tests and standard treadmill test (Bruce: 40.93±5.83 vs. Rockport: 58.71±2.73 and Balke: 52.09± 6.18). As a result of these findings it was concluded that the regression equations used in this study used is not suitable for 15-17 (yr) boy...
Annals of Military and Health Sciences Research
In addition to physical, physiological, psychological and technical factors, the environmental fa... more In addition to physical, physiological, psychological and technical factors, the environmental factors such as ambient temperature can also affect the performance of athletes and especially their health. Therefore, the purpose of the present study was to investigate The effects of ambient temperature on some physical, physiological and inflammatory indices in cadet wrestlers after circuit training based on wrestling technique in cadet wrestlers. Among cadet wrestlers of Kurdistan clubs who were champions in provincial competitions 2015, 21 wrestlers (Age: 15.04±0.8 years, weight: 59.20±12.67 kg, height: 163.47±7.39 cm, body fat percent: 10.03±3.39%) were selected as subjects based on inclusion criteria. Then, according to personal characteristics, subjects were divided into three groups: high temperature, normal temperature and low temperature groups. After providing the desired temperature (30, 18 and 10 °C), subjects complete a circuit training protocol based on wrestling techniqu...
یب و کیرتمویلاپ نیرمت هرود کی رثا تارییغت رب نآ زا سپ ینیرمت تعرس ـ ورین هطبار ییازریم نمهب رتکد ... more یب و کیرتمویلاپ نیرمت هرود کی رثا تارییغت رب نآ زا سپ ینیرمت تعرس ـ ورین هطبار ییازریم نمهب رتکد * 1 ، یفطل دیون 2 ، یناخمتسر نیسح 3 ، يداه اللهادمح 4 1 . نلایگ هاگشناد رایشناد 2 . نلایگ هاگشناد شزرو يژولویزیف دشرا یسانشراک يوجشناد 3 . شزرو يژولویزیف يرتکد يوجشناد 4 . یشزرو مولع و یندب تیبرت دشرا سانشراک :هلاقم تفایرد خیرات 31 / 1 / 89 :هلاقم شریذپ خیرات 25 / 8 / 89 کچ ی هد :قیقحت فده یب و کیرتمویلاپ نیرمت هرود کی رثا یسررب ،رضاح هعلاطم فده ورین هطبار تارییغت رب نآ زا سپ ینیرمت .دوب تعرس قیقحت شور : 40 نس درادناتسا فارحنا و نیگنایم اب لاعف يوجشناد 3 / 2 ± 24 نزو ،لاس 6 / 5 ± 75 دق و مرگولیک 3 / 8 ± 176 یتناس یندومزآ .دندرک تکرش رضاح هعلاطم رد هنابلطواد روطب رتم و هلضع ضابقنا تعرس .دندش میسقت یبرجت و لرتنک هورگ ود هب اه هاگتسد هلیسوب بیترت هب هلضع یکیرتکلا تیلاعف ورتکلا و سکدویب ياه ) فارگویم EMG هزادنا ( يریگ تیلاعف لرتنک هورگ .دش ياه یندومزآ و دنداد ماجنا ار دوخ هنازور عمج زا سپ .دندرک تکرش کیرتمویلاپ نیرمت همانرب کی رد هتفه شش تدم هب یبرجت هورگ ياه هداد يروآ یب هرود زا سپ و نیرمت ...
The purpose of this study was to investigate the differences in physical fitness and anthropometr... more The purpose of this study was to investigate the differences in physical fitness and anthropometric measures between Greco-Roman and freestyle wrestlers. Thirty three Iranian elite wrestlers (Freestyle, age: 24.54±3.43 years, N=13) and (Greco-Roman, age: 23.05±1.95 years, N=20) who were invited to the training camps participated in this study. The anthropometric traits included height, sitting height, arm-span, and the physical fitness traits included flexibility (sit-and-reach test), muscular endurance (pull-ups and bent-knee sit-ups), agility (4×9 m shuttle run), speed (40-yd sprint), and bilateral visual reaction time. Statistical comparison of the freestyle and GrecoRoman wrestlers groups was carried out using independent samples t test (P ≤ 0.05). The results indicated that in speed, reaction time, flexibility and pull-ups tests, Greco-Roman wrestlers were better than freestyle wrestlers, and in agility and bent-knee sit-ups tests the freestyle wrestlers were better than Greco-...
Аnnotation: The purpose of this study was to evaluation and comparison of VO2max assessment model... more Аnnotation: The purpose of this study was to evaluation and comparison of VO2max assessment models in students. Thirty students from high schools of Ardabil city were selected randomly and served as subjects in this study (age: 15.73±0.69 year, height: 169.46±8.1 cm, weight: 61.70±9.32 Kg). Subjects were divided into two groups. In one group Rockport test was used to estimate their VO2max and in other group Balk test was used for the same purpose. Also, the VO2max of both groups were examined by a standard treadmill test and the results were compared with the results of field tests. The one way of ANOVA and Tukey's post-hoc tests were used for data analysis (p>0/05). The results showed that there were significant differences between the results of the field tests and standard treadmill test (Bruce: 40.93±5.83 vs. Rockport: 58.71±2.73 and Balke: 52.09± 6.18). As a result of these findings it was concluded that the regression equations used in this study used is not suitable fo...
Delayed onset muscle soreness (DOMS) is classified as a muscle strain that presents with tenderne... more Delayed onset muscle soreness (DOMS) is classified as a muscle strain that presents with tenderness and stiffness one to two days after exercise. At present there are multiple proposed methods for treating DOMS, including anti-inflammatory medication, stretching, homeopathy, L-carnitine, rest and light exercise. The purpose of this study was to investigation of the effects of omega-3 intake on delayed onset muscle soreness in non-athlete men. 20 healthy subjects (age: 20.5±1.8 years) participated as subjects in this study. Subjects were randomly divided into two groups (experimental and control). In the experimental group, subjects consume daily 2000 mg of omega-3; 2 times per day for 1 month before and 48 hours after perform leg press exercise with eccentric pattern. Similarly, the was taking in the control group. The results showed significant decrease in severity of DOMS (CK and LDH levels and decreased knee's range of motion) in experimental group in comparison with control ...
Pedagogics, psychology, medical-biological problems of physical training and sports
Purpose: The aim of the study was to investigate the effect of stretching before intense exercise... more Purpose: The aim of the study was to investigate the effect of stretching before intense exercise on hematologic parameters and cell injury. Subjects: The subjects of the present study were 12 adolescent members of the Kurdistan Province futsal team (age: 14.83 ± 0.38 years, height: 173.92 ± 5.90 cm, weight: 63.50 ± 7.94 kg, peak power: 459.42 ± 95.94 watts). The RAST test was used to estimate the anaerobic power and to create the training load. Indexes of blood including white and red blood cells, hemoglobin, hematocrit, platelet and the levels of CK and LDH enzyme activities were measured. Results: The results of the pre and the post tests showed that among hematological parameters and cell damage indexes, the red blood cell and hemoglobin in both groups and the level of LDH in the training group were not significantly changed (p>0.05). Other parameters in the pre-test and post-test measures were statistically changed (p<0.05). Conclusion: Based on the results of the present...
Pedagogics, psychology, medical-biological problems of physical training and sports, 2016
Purpose: The purpose of the present study was to investigate the trainability of body composition... more Purpose: The purpose of the present study was to investigate the trainability of body composition, aerobic power and muscular endurance of cadet wrestlers. Subjects: Fifteen cadet wrestlers (age: 15.20±0.94 years) participated in this study. Methods: The testing was conducted twice, before and after four-week training period. The physiological parameters included aerobic power, muscular endurance and body composition. Results: A significant decrease in the body fat was observed following the training (P<0.05). No significant changes were found in the weight, aerobic power and muscular endurance measures (P >0.05). Conclusion: Our results indicated that wrestlers experienced significant changes in their body fat percentage during four-week training period. Cadet wrestlers' aerobic power, muscular endurance and body composition are trainable, although these improvements may be less than what has been observed in junior and senior wrestlers.
Педагогика Психология И Медико Биологические Проблемы Физического Воспитания И Спорта, 2014
Fiziceskoe Vospitanie Studentov, Mar 1, 2011
The purpose of this study was to investigate the changes in physiological parameters in cadet wre... more The purpose of this study was to investigate the changes in physiological parameters in cadet wrestlers following a 4-week general preparation phase of training. The physiological parameters included cardiovascular endurance, muscular endurance, speed, agility, flexibility, anaerobic power and body composition. In experiment took part 15 cadet wrestles at the age of 15 years. The testing was conducted twice, before and after the 4-week training period. Бахман Мирзеи, Фарад Рахмани-Ниа, Дэвид Керби, Иоанис Барбас, Навид Лотфи. Изменения в физиологических параметрах у курсантов борцов в 4-недельном цикле подготовки. Цель исследования: изучить изменения в физиологических параметрах у курсантов борцов в 4-недельном цикле подготовки. В исследовании рассмотрены физиологические параметры, включающие сердечно-сосудистую выносливость, мышечную выносливость, скорость, быстроту, изменчивость, анаэробную силу и состав тела. В эксперименте принимали участие 15 курсантов борцов в возрасте 15 лет. Эксперимент проводился дважды, до и после 4-недельной общей фазой подготовки. Бахман Мірзеї, Фарад Рахмані-Ніа, Девід Кєрбі, Іоаніс Барбас, Навід Лотфі. Зміни у фізіологічних параметрах у кадетів борців у 4-тижневому циклі підготовки. Мета дослідження: вивчити зміни у фізіологічних параметрах у курсантів борців у 4-тижневому циклі підготовки. У дослідженні розглянуто фізіологічні параметри, які містять серцево-судинну витривалість, м'язову витривалість, швидкість, меткість, мінливість, анаеробна сила та склад тіла. У дослідженні приймали участь 14 курсантів борців у віці 15 років. Дослідження проводилося двічі, до та після 4-тижневої загальної підготовки.
Annotation: Purpose: The purpose of the present study was to investigate the relationship between... more Annotation: Purpose: The purpose of the present study was to investigate the relationship between anthropometric parameters, body composition and explosive power in cadet wrestlers. Methods: Seventeen male cadet wrestlers (age = 15.6 ± 0.73 yrs) from the Kurdistan province wrestling clubs participated in this study. Body composition (percent body fat), anthropometric parameters (height, sitting height, arm-span, upper arm length, leg length, upper leg length, arm circumference, middle thigh and calf circumference), explosive power (standing long jump and Medicine ball throw tests) were measured. Results: Explosive power of upper body was significantly correlated with sitting height arm-span, upper arm length, arm circumference, weight (p < 0.01) and %BF (p < 0.05). Explosive power of lower body was significantly correlated with sitting height, arm-span and weight (p<0.01). No significant correlation was found between explosive power of lower body and leg length, upper leg l...
Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 2014
Purpose: The purpose of the present study was to determine the appropriate rest time between sets... more Purpose: The purpose of the present study was to determine the appropriate rest time between sets during weight training with light load. Material: Seventeen cadet wrestlers (age =16.7В±0.6 yrs.; height =169.2В±8.2 cm; and weight =51.4В±7.9 kg) were recruited from wrestling clubs in the Iranian province of Kurdistan and served as subjects in this study. This study was conducted over seven sessions with 48 hours recovery between sessions. In the first session, the characteristic features of subjects were recorded and the one repetition maximum in the bench press test was determined for each subject. On 6 separate occasions, subjects performed a 4 set of bench press at 60% 1RM with a 90 and 240 seconds rest interval until volitional fatigue. The numbers of repetition performed by the subjects, and also, cortisol and testosterone levels and 1RM were recorded. The results showed that there was a significant difference in the sustainability of repetitions during 4 sets bench press with 6...
مجله پژوهش در علوم توانبخشی, 2011
چکیده مقدمه: از آن جائی که حفظ تعادل[1] یکی از شاخص های تعیین استقلال افراد سالمند به شمار می رود... more چکیده مقدمه: از آن جائی که حفظ تعادل[1] یکی از شاخص های تعیین استقلال افراد سالمند به شمار می رود، بررسی و تشخیص عوامل موثر بر تغییرات تعادل بویژه اثرات انواع قراردادهای[2] تمرین ورزشی بر تعادل از موضوعات قابل بررسی است که مورد توجه محققان قرار گرفته است. هدف مطالعه حاضر بررسی مقایسه ای اثر تمرینات تعادلی در آب، تمرینات ذهنی و تمرینات ترکیبی (ذهنی و تعادلی در آب) بر تعادل مردان سالمند سالم بود. مواد و روش ها: تعداد 120 نفر از سالمندان، سن 14/14 ±07/65 سال، وزن 31/3±86/71 کیلوگرم و قد 57/3 ±2/173 سانتی متر، انتخاب و به صورت تصادفی در 4 گروه] گروه اول تمرینات تعادلی در آب (30 نفر)، گروه دوم تمرينات ذهني (30 نفر)، گروه سوم تمرین ترکیبی تعادلی در آب و تمرين ذهني (30 نفر)، گروه چهارم بدون تمرین یا کنترل (30 نفر)[ طبقهبندی شدند. براي برآورد تعادل آزمودني ها از آزمون Y[3] در سه جهت استفاده شد. سپس در مورد گروه تمرینی تعادلی در آب، تمرینات در آب با هدف افزایش تعادل آزمودنیها به مدت شش هفته و هر هفته به مدت سه جلسه و هر جلسه به مدت یک ساعت انجام شد. در مورد گروه تمرینات ذهنی مدت تمرين ذهنی...
Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 2013
The purpose of this study was to investigation of the effects of two different dose of BCAA suppl... more The purpose of this study was to investigation of the effects of two different dose of BCAA supplementation on serum indices of muscle damage and soreness in soccer players. 30 male soccer players (age: 20.2+-0.6 yr) participated as subjects in this study. Subjects were randomly divided into three groups (double-blind design). All subjects performed lower- body resistance exercise (6 sets, 10 repetitions, 70% 1RM). The BCAA was given at doses of 200 and 450 mg.kg -1 BW for supplemental groups 1 and 2, respectively, 30 minutes before and after to exercise tests and carbohydrate was given at dose of 200 mg.kg -1 BW for placebo group. To identify enzymes activity (IU/L), venous blood samples were collected 30 min prior to exercise and at 24 and 48 hrs post exercise. Data were statistically analyzed using repeated measures ANOVA and Bonfferoni test. Baseline CK, CK-MB and muscle soreness were determined 30 minutes before the exercise test. Baseline serum values for CK, CK-MB and baselin...
JOURNAL OF RESEARCH IN REHABILITATION SCIENCES, 2010
Page 1. ∗ < < > > Email: Ssajadh.abhar@gmail.com 1-< < > > 2-< > &g... more Page 1. ∗ < < > > Email: Ssajadh.abhar@gmail.com 1-< < > > 2-< > > < 3 - < < > < 6/ 2/ 89 1 > > < > > 1 < 2 < 3 : > ) Balance ( @ > <> Protocol ( > > < > ...
The purpose of this study was to evaluation and comparison of VO2max assessment models in student... more The purpose of this study was to evaluation and comparison of VO2max assessment models in students. Thirty students from high schools of Ardabil city were selected randomly and served as subjects in this study (age: 15.73±0.69 year, height: 169.46±8.1 cm, weight: 61.70±9.32 Kg). Subjects were divided into two groups. In one group Rockport test was used to estimate their VO2max and in other group Balk test was used for the same purpose. Also, the VO2max of both groups were examined by a standard treadmill test and the results were compared with the results of field tests. The one way of ANOVA and Tukey’s post-hoc tests were used for data analysis (p>0/05). The results showed that there were significant differences between the results of the field tests and standard treadmill test (Bruce: 40.93±5.83 vs. Rockport: 58.71±2.73 and Balke: 52.09± 6.18). As a result of these findings it was concluded that the regression equations used in this study used is not suitable for 15-17 (yr) boy...
Annals of Military and Health Sciences Research
In addition to physical, physiological, psychological and technical factors, the environmental fa... more In addition to physical, physiological, psychological and technical factors, the environmental factors such as ambient temperature can also affect the performance of athletes and especially their health. Therefore, the purpose of the present study was to investigate The effects of ambient temperature on some physical, physiological and inflammatory indices in cadet wrestlers after circuit training based on wrestling technique in cadet wrestlers. Among cadet wrestlers of Kurdistan clubs who were champions in provincial competitions 2015, 21 wrestlers (Age: 15.04±0.8 years, weight: 59.20±12.67 kg, height: 163.47±7.39 cm, body fat percent: 10.03±3.39%) were selected as subjects based on inclusion criteria. Then, according to personal characteristics, subjects were divided into three groups: high temperature, normal temperature and low temperature groups. After providing the desired temperature (30, 18 and 10 °C), subjects complete a circuit training protocol based on wrestling techniqu...
یب و کیرتمویلاپ نیرمت هرود کی رثا تارییغت رب نآ زا سپ ینیرمت تعرس ـ ورین هطبار ییازریم نمهب رتکد ... more یب و کیرتمویلاپ نیرمت هرود کی رثا تارییغت رب نآ زا سپ ینیرمت تعرس ـ ورین هطبار ییازریم نمهب رتکد * 1 ، یفطل دیون 2 ، یناخمتسر نیسح 3 ، يداه اللهادمح 4 1 . نلایگ هاگشناد رایشناد 2 . نلایگ هاگشناد شزرو يژولویزیف دشرا یسانشراک يوجشناد 3 . شزرو يژولویزیف يرتکد يوجشناد 4 . یشزرو مولع و یندب تیبرت دشرا سانشراک :هلاقم تفایرد خیرات 31 / 1 / 89 :هلاقم شریذپ خیرات 25 / 8 / 89 کچ ی هد :قیقحت فده یب و کیرتمویلاپ نیرمت هرود کی رثا یسررب ،رضاح هعلاطم فده ورین هطبار تارییغت رب نآ زا سپ ینیرمت .دوب تعرس قیقحت شور : 40 نس درادناتسا فارحنا و نیگنایم اب لاعف يوجشناد 3 / 2 ± 24 نزو ،لاس 6 / 5 ± 75 دق و مرگولیک 3 / 8 ± 176 یتناس یندومزآ .دندرک تکرش رضاح هعلاطم رد هنابلطواد روطب رتم و هلضع ضابقنا تعرس .دندش میسقت یبرجت و لرتنک هورگ ود هب اه هاگتسد هلیسوب بیترت هب هلضع یکیرتکلا تیلاعف ورتکلا و سکدویب ياه ) فارگویم EMG هزادنا ( يریگ تیلاعف لرتنک هورگ .دش ياه یندومزآ و دنداد ماجنا ار دوخ هنازور عمج زا سپ .دندرک تکرش کیرتمویلاپ نیرمت همانرب کی رد هتفه شش تدم هب یبرجت هورگ ياه هداد يروآ یب هرود زا سپ و نیرمت ...
The purpose of this study was to investigate the differences in physical fitness and anthropometr... more The purpose of this study was to investigate the differences in physical fitness and anthropometric measures between Greco-Roman and freestyle wrestlers. Thirty three Iranian elite wrestlers (Freestyle, age: 24.54±3.43 years, N=13) and (Greco-Roman, age: 23.05±1.95 years, N=20) who were invited to the training camps participated in this study. The anthropometric traits included height, sitting height, arm-span, and the physical fitness traits included flexibility (sit-and-reach test), muscular endurance (pull-ups and bent-knee sit-ups), agility (4×9 m shuttle run), speed (40-yd sprint), and bilateral visual reaction time. Statistical comparison of the freestyle and GrecoRoman wrestlers groups was carried out using independent samples t test (P ≤ 0.05). The results indicated that in speed, reaction time, flexibility and pull-ups tests, Greco-Roman wrestlers were better than freestyle wrestlers, and in agility and bent-knee sit-ups tests the freestyle wrestlers were better than Greco-...
Аnnotation: The purpose of this study was to evaluation and comparison of VO2max assessment model... more Аnnotation: The purpose of this study was to evaluation and comparison of VO2max assessment models in students. Thirty students from high schools of Ardabil city were selected randomly and served as subjects in this study (age: 15.73±0.69 year, height: 169.46±8.1 cm, weight: 61.70±9.32 Kg). Subjects were divided into two groups. In one group Rockport test was used to estimate their VO2max and in other group Balk test was used for the same purpose. Also, the VO2max of both groups were examined by a standard treadmill test and the results were compared with the results of field tests. The one way of ANOVA and Tukey's post-hoc tests were used for data analysis (p>0/05). The results showed that there were significant differences between the results of the field tests and standard treadmill test (Bruce: 40.93±5.83 vs. Rockport: 58.71±2.73 and Balke: 52.09± 6.18). As a result of these findings it was concluded that the regression equations used in this study used is not suitable fo...
Delayed onset muscle soreness (DOMS) is classified as a muscle strain that presents with tenderne... more Delayed onset muscle soreness (DOMS) is classified as a muscle strain that presents with tenderness and stiffness one to two days after exercise. At present there are multiple proposed methods for treating DOMS, including anti-inflammatory medication, stretching, homeopathy, L-carnitine, rest and light exercise. The purpose of this study was to investigation of the effects of omega-3 intake on delayed onset muscle soreness in non-athlete men. 20 healthy subjects (age: 20.5±1.8 years) participated as subjects in this study. Subjects were randomly divided into two groups (experimental and control). In the experimental group, subjects consume daily 2000 mg of omega-3; 2 times per day for 1 month before and 48 hours after perform leg press exercise with eccentric pattern. Similarly, the was taking in the control group. The results showed significant decrease in severity of DOMS (CK and LDH levels and decreased knee's range of motion) in experimental group in comparison with control ...
Pedagogics, psychology, medical-biological problems of physical training and sports
Purpose: The aim of the study was to investigate the effect of stretching before intense exercise... more Purpose: The aim of the study was to investigate the effect of stretching before intense exercise on hematologic parameters and cell injury. Subjects: The subjects of the present study were 12 adolescent members of the Kurdistan Province futsal team (age: 14.83 ± 0.38 years, height: 173.92 ± 5.90 cm, weight: 63.50 ± 7.94 kg, peak power: 459.42 ± 95.94 watts). The RAST test was used to estimate the anaerobic power and to create the training load. Indexes of blood including white and red blood cells, hemoglobin, hematocrit, platelet and the levels of CK and LDH enzyme activities were measured. Results: The results of the pre and the post tests showed that among hematological parameters and cell damage indexes, the red blood cell and hemoglobin in both groups and the level of LDH in the training group were not significantly changed (p>0.05). Other parameters in the pre-test and post-test measures were statistically changed (p<0.05). Conclusion: Based on the results of the present...
Pedagogics, psychology, medical-biological problems of physical training and sports, 2016
Purpose: The purpose of the present study was to investigate the trainability of body composition... more Purpose: The purpose of the present study was to investigate the trainability of body composition, aerobic power and muscular endurance of cadet wrestlers. Subjects: Fifteen cadet wrestlers (age: 15.20±0.94 years) participated in this study. Methods: The testing was conducted twice, before and after four-week training period. The physiological parameters included aerobic power, muscular endurance and body composition. Results: A significant decrease in the body fat was observed following the training (P<0.05). No significant changes were found in the weight, aerobic power and muscular endurance measures (P >0.05). Conclusion: Our results indicated that wrestlers experienced significant changes in their body fat percentage during four-week training period. Cadet wrestlers' aerobic power, muscular endurance and body composition are trainable, although these improvements may be less than what has been observed in junior and senior wrestlers.
Педагогика Психология И Медико Биологические Проблемы Физического Воспитания И Спорта, 2014