Abstract
Objectives:This study was conducted to evaluate the effect of the different intensity levels of single-session aerobic exercise on serum levels of lipid peroxidation and muscle damage markers in sedentary males.Method:Fifty one sedentary healthy males aged 21.76±1.89 years were randomly divided into four groups, with one control (n=10) and three treatment groups that attended single-session aerobic exercise with low (n=14), moderate (n=14), and high (n=13) intensities. The serum levels of malondialdehyde (MDA) and creatine kinase (CK) were measured.Results:Data analysis revealed a significant effect by the intensity levels of aerobic exercise on MDA (P=0.001) and CK (P=0.003) post-test when the participants in the treatment groups were compared with the control. When the intensity of aerobic exercise was increased, the amount of MDA and CK was also found to be increased.Conclusion:Single-session aerobic exercise can increase the amount of MDA and CK, suggesting that low intensity level of aerobic exercise should be utilized for more adaptation, and to prevent lipid peroxidation and muscle damage in sedentary males.
Highlights
Physical activity and regular non-exhaustive exercise have beneficial effects in preventing several chronic diseases such as cardiovascular disease, diabetes, cancer, hypertension, obesity, depression, osteoporosis, and premature death (Powers, Nelson, & Hudson, 2011; Gomez-Cabrera, Domenech, & Viña, 2008)
Single-session aerobic exercise can increase the amount of MDA and creatine kinase (CK), suggesting that low intensity level of aerobic exercise should be utilized for more adaptation, and to prevent lipid peroxidation and muscle damage in sedentary males
multivariate analysis of covariance (MANCOVA) analysis indicated that the intensity levels of aerobic exercise has a significant effect on post-test CK [F (3, 45) = 5.455, P = 0.003]
Summary
Physical activity and regular non-exhaustive exercise have beneficial effects in preventing several chronic diseases such as cardiovascular disease, diabetes, cancer, hypertension, obesity, depression, osteoporosis, and premature death (Powers, Nelson, & Hudson, 2011; Gomez-Cabrera, Domenech, & Viña, 2008). As muscular force and/or oxygen consumption increase, reactive oxygen species (ROS), which are oxygen centred free radicals, will be produced in skeletal muscles, liver, and heart during exhausting aerobic exercise (Al Ghouleh, Khoo, Knaus, Griendling, Touyz, Thannickal et al, 2011; Bloomer, Falvo, Fry, Schilling, Smith, & Moore, 2006). This will result in oxidative stress hurting cell tissues in different ways. It has been reported that oxidative stress and muscle injury response to matched anaerobic exercise is minimal and not different between two modes of training (Bloomer et al, 2006)
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