Shadmehr Mirdar; Masoomeh Nobahar
Volume 2, Issue 1 , April 2012
Abstract
Abstract
Aim: Physical exercise acts as a mechanical stressor that can elicit biochemical alterations. Thus, muscular effort is able to modify blood concentrations of some cellular enzymes. The purpose of this study was to investigate the effects of one progressive session exercise in day during one ...
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Abstract
Aim: Physical exercise acts as a mechanical stressor that can elicit biochemical alterations. Thus, muscular effort is able to modify blood concentrations of some cellular enzymes. The purpose of this study was to investigate the effects of one progressive session exercise in day during one week on some enzymes muscle damage such as creatine phospho Kinase (CPK), lactate dehydrogenase (LDH) and aspartate aminotransferase (AST) in active girls.
Method: thirteen girls students of physical education with mean (Vo2max 41.07±5.11 ml/kg/min) was selected and randomly divided to experimental group (one session of exercise in day, on a treadmill at a rate of 6-8 km/h for 3 min with 1min of active rest between sets until exhaustion, n=7) and control group (n=6). Venous blood samples were obtained for analysis before of exercise (base line) and 1, 4, 7 days during of exercise period, as well as after the 24 hours last progressive session exercise. Data of study were analyzed by repeated measure ANOVA and independent t test. The significant level was set at P≤0.05.
Results: The result of this study indicated that AST, LDH and CPK were significantly higher after 1, 4 and 7 days exercise than the resting level (P≤0.05), but after 24 h of end period, this Diff were significantly lower than at the exercise day (P≤0.05).
Conclusion: These results suggested that acute exposure to progressive session exercise without adequate recovery can lead to reduced performance and a more dramatically increase in muscle damage enzymes.
Key words: Progressive exercise, muscle damage, LDH, CPK, AST.
Shadmehr Mirdar; Maedehsadat Raisi; Masoomeh Nobahar
Volume 1, Issue 1 , April 2011, , Pages 11-23
Abstract
AbstractAim: The objective of this research was to investigate the effect of two peaks exercise training program during one week on some hepatic stress indexes (AST, ALT) in active girls.
Method: Twelve physical education girl students with ranged between 16-18 years old and mean maximal oxygen consumption ...
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AbstractAim: The objective of this research was to investigate the effect of two peaks exercise training program during one week on some hepatic stress indexes (AST, ALT) in active girls.
Method: Twelve physical education girl students with ranged between 16-18 years old and mean maximal oxygen consumption 35.2±3.4 ml/kg/min, was selected and divided randomly into an experimental (n=7) and control (n=5) groups. The subjects in the experimental group performed two peaks exercise training program during one week with 70%, 80%, and 90% VO2max intensities in the first three days and repeated in late three days. The control group did not perform any physical activity while the research was underway. Venous blood samples were obtained for analysis before the exercise and the 24 hours after one, 3, 6 days exercise sessions. Data were analyzed by using ANOVA with repeated measure test and independent t-test at significant levels p
