نوع مقاله : مقاله پژوهشی Released under CC BY-NC 4.0 license I Open Access I
نویسندگان
1 دانشجوی کارشناسی‌ارشد دانشگاه خوارزمی
2 دانشیار دانشگاه خوارزمی
چکیده
هدف از پژوهش حاضر تعیین تأثیر تمرین تناوبی با شدت بالا در محیط گرم بر عملکرد هوازی و بی‌هوازی مردان فعال بود. 24 دانشجوی مرد فعال با توجه به برآورد vVO2maxبه سه گروه تمرین در محیط گرم (8 نفر)، تمرین در محیط طبیعی (8 نفر) و کنترل (8 نفر) به‌صورت همتا تقسیم شدند. آزمودنی‌های گروه محیط گرم و طبیعی 12 جلسه طی دو هفتۀ متوالی تمرین کردند. هر جلسۀ تمرین شامل 5 وهلۀ 150 ثانیه‌ای دویدن با شدت 90-85 درصد vVO2maxروی نوار گردان بود و بین هر وهله 150 ثانیه دویدن با شدت 50 درصد vVO2max به‌عنوان استراحت فعال قرار داشت. پیش و پس از پروتکل پژوهش، آزمون Tmax و آزمون فزایندۀ بیشینه روی نوار گردان جهت بررسی عملکرد هوازی و آزمون وینگیت به‌منظور بررسی عملکرد بی‌هوازی در محیطی با دمای 1±23 درجه و رطوبت 5±35 درصد طبیعی اجرا شد. بررسی داده‌ها، از طریق تحلیل واریانس یکسویه در سطح 05/0P< نشان داد، تمرین تناوبی با شدت بالا در محیط گرم، شاخص‌های vVO2max، Tmax، مسافت حداکثر سرعت توان هوازی و میانگین توان بی‌هوازی به‌ترتیب به مقدار 3/14 درصد، 3/16 درصد، 4/33 درصد و 1/40 درصد نسبت به پیشرفت گروه تمرین در محیط طبیعی افزایشی معنادار داشت، اما حداکثر توان بی‌هوازی (15 درصد) تنها نسبت به گروه کنترل افزایش معناداری داشت (05/0P<). همچنین مقدار لاکتات پس از آزمون Tmax تنها در گروه تمرین در محیط گرم (6/12- درصد) کاهش معناداری نشان داد، اما در مقایسه‌های بین‌گروهی تفاوت معنادار نبود (05/0P<). گروه کنترل در هیچ‌یک از شاخص‌ها تفاوت معناداری نشان نداد (05/0P<). به‌طور کلی نتایج نشان داد دو هفته تمرین تناوبی با شدت بالا در محیط گرم، عملکرد هوازی و برخی شاخص‌های عملکرد بی‌هوازی را نسبت به محیط طبیعی به‌طور معناداری بهبود می‌دهد.
کلیدواژه‌ها
عنوان مقاله [English]
The Effect of High Intensity Interval Training in Heat Environment on Aerobic and Anaerobic Performance in Active Men
نویسندگان [English]
- Seyed Mohamad Seyedi Bidgoli 1
- Hamid Rajabi 2
1 MSc Student of Kharazmi University
2 Associate Professor of Kharazmi University
چکیده [English]
The aim of this study was to determine the effect of high intensity interval training in heat environment on aerobic and anaerobic performance in active men. 24 active university students were divided into three groups: training in the heat environment (HE) (n=8), training in natural environment (NE) (n=8) and control (n=8) as matched subjects according to VO2max estimation. HE and NE subjects trained for two consecutive weeks in 12 training sessions. Each session included 5 sets of 150 seconds of running on treadmill with 85-90% of vVO2max with 150 seconds of active recovery between each two sets with 50% of vVO2max. Before and after the training protocol, subjects performed Tmax test and maximal incremental test on a treadmill to evaluate the aerobic performance and Wingate test was used to assess anaerobic performance in an environment with 23±1° temperature and 35±5% natural humidity. For data analysis, one-way ANOVA was used (P<0.05). Results showed that high-intensity interval training in a heat environment significantly increased vVO2max, Tmax, maximum distance, speed of aerobic power and mean anaerobic power (14.3%, 16.3%, 33.4%, 40.1% respectively) compared to the NE group. But the peak anaerobic power significantly increased (15%) only compared to the control group (P<0.05). Also, lactate significantly reduced only in HE group (-12.6%) but the differece was not significant in inter-group comparisons (P<0.05). The control group showed no significant differences in indices (P<0.05). In general, the results showed that two weeks of high-intensity interval training in a heat environment significantly enhanced the aerobic performance and some anaerobic performance indices compared to the natural environment
کلیدواژه‌ها [English]
- active men
- aerobic performance
- anaerobic performance
- heat environment
- high-intensity interval training
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