نویسنده
استادیار، گروه تربیت بدنی و علوم ورزشی، دانشگاه پیام نور، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
Purpose: This study aimed to compare the effects of four weeks of aerobic training and strength training on serum cortisol and creatine kinase levels in sedentary overweight women aged between 25 and 40 years.
Method: A total of 36 subjects were selected from inactive women with excess weight as a research sample. They were chosen based on specific criteria for participation in the study and were then randomly assigned to three groups: aerobic exercise (12 people), strength training (12 people), and a control group (12 people). The aerobic training group underwent a 4-week program consisting of 12 training sessions, with three sessions per week. The intensity of the sessions was set at 65 to 70% of the reserve heart rate, lasting 16 to 22 minutes each week. The strength training program also spanned four weeks, with three sessions per week at an intensity of 50 to 65% of one repetition maximum (1RM). Blood samples were collected from the subjects at two points: before the training began and 48 hours after the final four-week session. The samples were taken under fasting and baseline conditions to measure serum cortisol and creatine kinase levels. Blood samples of 6 ml were drawn from the brachial vein for serum separation. Data analysis involved using covariance analysis and Bonferroni's post hoc test to assess intergroup differences, if significant. Additionally, the paired t-test was employed to evaluate intragroup differences at a significance level of 0.05.
Findings: The study results revealed a significant difference in the intergroup levels of cortisol and serum creatine kinase among inactive women after four weeks of aerobic and strength training (P=0.000). Additionally, a significant difference was observed in intragroup cortisol levels between the pre-test and post-test stages in both the aerobic and strength training groups (P<0.05). Furthermore, a significant difference in intragroup creatine kinase levels between the pre-test and post-test phases was also noted in the aerobic training group (P<0.05).
Conclusion: Four weeks of strength and aerobic training led to a decrease in cortisol and creatine kinase levels in inactive overweight women. Therefore, both moderate-intensity exercise methods can be used to reduce stress and injury in overweight inactive women.
کلیدواژهها [English]
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