Response and adaptation to exercises
Tahereh Bagherpoor; Hossein Talebi; Nematollah nemati
Abstract
Purpose: The purpose of this research is to compare the effect of traditional resistance exercises and suspension-resistance exercises on serum levels of muscle damage indicators and motor performance of young wrestlers.Methods: Thirty young wrestlers were selected and randomly divided into 3 control ...
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Purpose: The purpose of this research is to compare the effect of traditional resistance exercises and suspension-resistance exercises on serum levels of muscle damage indicators and motor performance of young wrestlers.Methods: Thirty young wrestlers were selected and randomly divided into 3 control groups, traditional-resistance exercises and suspension-resistance exercises. Serum levels of creatine kinase and lactate dehydrogenase were investigated by fasting blood sampling method. Muscular strength, speed, power and agility were also respectively evaluated by one repetition maximum in chest press movement, 15 yard speed test, Sargent's jump and T test. Then, each of the training groups performed their respective exercises for 12 weeks, 3 sessions per week and each training session lasted 30-45 minutes. At the end of 12 weeks of training, the post-test phase was conducted. Two-way analysis of variance and Bonferroni's post hoc test were used for statistical analysis of research findings.Results: The results of two-way analysis of variance and Bonferroni's post hoc test showed that in the post-test stage, both traditional-resistance and suspension-resistance exercises lead to a significant improvement in strength, speed, power and agility, as well as a significant decrease in serum levels of creatine kinase and lactate dehydrogenase (p≤0.05).Conclusion: According to the results of the present research, it seems that suspension-resistance exercises, due to its unique features, can be used as a new approach alongside with traditional-resistance exercises to improve the movement performance and also reduce the levels of muscle damage indicators of young wrestlers.
J Vakili; f Halal Khor; M Aghaei
Abstract
Aim: : Exercise training with blood flow restriction (BFR)is a modern method of training that has been developed in two recent decades and has been used for improvement of performance. Therefore, this study was conducted to identify the effect of 4 weeks rock climbing with blood flow restriction on athletic ...
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Aim: : Exercise training with blood flow restriction (BFR)is a modern method of training that has been developed in two recent decades and has been used for improvement of performance. Therefore, this study was conducted to identify the effect of 4 weeks rock climbing with blood flow restriction on athletic performance and some muscle damage indictors in elite rock climbers. Method: : In a semi experimental research method, 12 male and 12 female elite rock climbers with at least 4 years rock climbing experience and age range of 23 to 27 years and a fat percentage of 10 to 20 percent purposefully selected among the climbers, and allocated in two equal BFR and none-BFR groups. Both groups performed 4-week rock climbing training program consisting three sessions per week and each session was 90 minutes, severity of each session was 60 to 80% of climbing grades. Blood samples were obtained in baseline and after four weeks of climbing training to determine the amount of lactate dehydrogenase (LDH), creatine kinase (CK) and lactate. Also, hand grip, explosive anaerobic power, body fat percent, adduction strength in upper body and degree of climbing was measured. For data analysis, independent T test was used at α ≤ 0.05. Results: After 4 weeks of climbing with and without limitation of blood flow, the index of muscular damage of LDH, CK did not show significant difference in response to climbing exercise. But lactate level was lower in BFR rather than NBFR. There are not any difference in Hand Crip strength, explosive anaerobic power, body fat percent, adduction strength in upper body between BFR and NBFR groups. But in degree of climbing, the result showed the better performance in BFR than NBFR (P <0.05). Conclusion: According to the results of this study, rock climbing training with or without BFR, do not increase muscular damage. and it could influence on performance.
Afshar Jafari; Ali Zarghami Khameneh
Volume 3, Issue 2 , July 2014, , Pages 141-153
Abstract
Abstract
Aim: The aim of this study was to determine the effect of one-bout exhaustive resistance exercise on some muscular damage markers in serum of male volleyball players after different dosage of caffeine intake.
Method: Thirty male volleyball players (mean aged 21.47±1.45 years, fat 10.47±3.11 ...
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Abstract
Aim: The aim of this study was to determine the effect of one-bout exhaustive resistance exercise on some muscular damage markers in serum of male volleyball players after different dosage of caffeine intake.
Method: Thirty male volleyball players (mean aged 21.47±1.45 years, fat 10.47±3.11 % and BMI 23.15±1.26 kg.m2) in a randomized semi experiment and double-blind design were allocated in three groups: supplementing groups (with 6 and 9 mg.kg-1 caffeine) and placebo group (6 mg.kg-1 dextrose). After the supplementation, all subjects were participated in one-single-session resistance weight-training (with 80% of one repetition maximum until exhaustion). Changes in muscular damage indices (total serum CK and LDH) were determined in three phases (Baseline, immediately and 24 hours after the training protocol). The normal data were analyzed by repeated measure ANOVA and Bonferroni at P≤0.05.
Results: The results showed different dosage of caffeine intake had no significant effect on increased level of muscular damage serum enzymes immediately after exercise compared with the placebo group. Also, exhaustive resistance exercise increased levels of 24-hour CK and LDH significantly in all groups (P≤0.05). However, different dosage of caffeine intake had not effect on increased levels of muscle damage markers after 24 hours of exercise.
Conclusion: Based on the present findings and the execss intake of different dosage of caffeine probabley can not prevent further damage and in intraction with resistante exercise can not lead to escalation the indirect indices of muscle damage in compared with the placebo group.
Keywords: Resistance Exercise, Creatine kinase, Lactate dehydrogenase,
Caffeine
