تأثير تمرين هوازي در خشكي، آب معمولي و آب گرم بر تغييرپذيري ضربان قلب دوره ريكاوري در مردان جوان سالم

THE EFFECTS OF LAND, NORMAL WATER, and WARM WATER AEROBIC EXERCISES ON HEART RATE VARIABILITY IN RECOVERY PERIOD IN HEALTHY YOUNG MEN

پيش‌زمينه و هدف: هدف از پژوهش حاضر، بررسي تأثير تمرين هوازي در خشكي، آب معمولي و گرم بر تغييرپذيري ضربان قلب دوره ريكاوري در مردان جوان سالم مي ­باشد. مواد و روش‌ كار: آزمودني­ هاي اين پژوهش، به صورت تصادفي در چهار گروه( كنترل، تمرين هوازي در خشكي، آب معمولي و گرم) تقسيم و به مدت 20 روز متوالي تمرينات هوازي را اجرا نمودند. تغييرپذيري ضربان قلب در سه دوره پيش ­آزمون، دوره ريكاوري پس از اولين جلسه تمرين و دوره پس ­آزمون اندازه­ گيري گرديد. براي تجزيه و تحليل داده ­ها، از تحليل واريانس يك راهه و تحليل واريانس در اندازه ­هاي تكراري، آزمون تعقيبي بونفروني و اندازه تأثير استفاده شد يافته‌ها: تمرين هوازي در محيط خشكي سبب تغيير معني ­دار در امواج با فركانس پايين، بالا و نسبت امواج با فركانس پايين به بالا هم در دوره ريكاوري و هم در دوره پس از تمرين مي­ گردد (0/001≥p). تمرين هوازي در محيط آب با دماي معمولي و گرم سبب تغيير غيرمعني ­دار (0/05

Background & Aims: The purpose of this study was to investigate the effects of land, warm and normal water aerobic exercises on heart rate variability in recovery period on healthy young men. Materials & Methods: In this study, subjects were randomly divided into four groups (control, Land aerobic exercise, normal water aerobic exercise, and warm water aerobic exercise) and performed regular aerobic exercises for 20 days. Heart rate variability was measured in three pre-test, recovery period after the first training session and post-test. For analysis of data, one-way and repeated measured ANOVA, Bonferroni's post hoc test and effect size were used. Results: Aerobic exercise land condition causes a significant change in low frequency, high frequency and ration of low-frequency to high frequency wavelengths during recovery and post-training (p<0.001). Aerobic exercise in a water environment with normal and warm temperatures caused a non-significant change (p<0.05) in low-frequency waves both during recovery and after exercise, a significant change in the waves with high frequency and ration of low frequency to high-frequency waves during recovery (p<0.001) and unusual change in high-frequency waves and ration of low-frequency wavelengths to high-frequency waves in the post-training period (p<0.05). Conclusion: In the recovery period, the aerobic exercise environment causes changes in the overcoming of sympathetic system, but the parasympathetic system does not affect the aerobic training environment. Also, after the short aerobic training period, the training environment causes changes in overcoming of sympathetic and parasympathetic systems.