نوع مقاله : مقاله پژوهشی Released under CC BY-NC 4.0 license I Open Access I
نویسندگان
1 دانشیار گروه فیزیولوژی ورزش دانشگاه تهران، تهران، ایران
2 . دانشیار گروه فیزیولوژی ورزش دانشگاه تهران، تهران، ایران
3 دانشجوی دکتری فیزیولوژی ورزشی قلب، عروق و تنفس، دانشگاه تهران، تهران، ایران
چکیده
گشادکننده‌های عروقی از تنظیم‌کننده‌های کلیدی فشارخون و سیستم قلبی – عروقی‌اند که این مطالعه با هدف بررسی تأثیر تمرینات تناوبی شدید بر تغییرات اپلین و نیتریک اکساید به‌عنوان گشادکننده‌های عروقی و تنظیم‌کنندۀ فشارخون انجام گرفت. در این پژوهش اپلین و نیتریک اکساید و فشارخون پیش و پس از شش هفته تمرینات تناوبی اندازه‌گیری شد. بدین منظور دو گروه تجربی (10 نفر) و کنترل (10 نفر) شامل مردان میانسال شهر تهران با دامنۀ سنی 45 تا 55 سال به‌صورت تصادفی انتخاب شدند. پروتکل تمرین تناوبی با شدت بالا شامل 10 تناوب (45 ثانیه با شدت 85 تا 90 درصد ضربان قلب ذخیره و 2 دقیقه بازیافت) توسط گروه تجربی طی شش هفته اجرا شد. در پایان هفتۀ سوم شدت تمرین به 12 تناوب تمرینی و 90 ثانیه بازیافت رسید. 48 ساعت پس از آخرین جلسۀ تمرینی نمونه‌های خونی و اندازه‌گیری‌های آنتروپومتریکی و ترکیب بدنی از آزمودنی‌ها گرفته شد. نتایج نشان داد که شش هفته مداخلۀ تمرین تناوبی شدید موجب افزایش معنادار میزان اپلین (001/0P = )، نیتریک اکساید (001/0P = )، و کاهش معنادار در میزان فشارخون سیستولی (001/0P = )، و دیاستولی (002/0P = )، در گروه تجربی شد. نتایج این پژوهش حاکی از تأثیر مفید ورزش بر روی دستگاه اپلینرژیک و فشارخون است و از طرفی نشان می‌دهد احتمالاً افراد دچار فشارخون، می‌توانند به فعالیت تناوبی با شدت بالا بپردازند، لیکن تأیید این مطلب نیازمند پژوهش‌های بیشتر در خصوص نقش تمرینات تناوبی شدید و ارتباط آن با فشارخون است.
کلیدواژه‌ها
عنوان مقاله [English]
The Effect of 6 Weeks of High Intensity Interval Training (HIIT) on Plasma Levels of Apelin and Nitric Oxide in Inactive middle Aged Men
نویسندگان [English]
- Siroos Choobineh 1
- Fatemeh Shabkhiz 2
- Hafez Rahimzadeh 3
- Hossein Barzegari Marvast 3
1 . Associate Professor, Department of Exercise Physiology, University of Tehran, Tehran, Iran
2 Associate Professor, Department of Exercise Physiology, University of Tehran, Tehran, Iran
3 PhD Student of Exercise Physiology of Cardiovascular and Respiratory Systems, University of Tehran, Tehran, Iran
چکیده [English]
Vasodilators are one of the key regulators of blood pressure and cardiovascular system. The aim of this study was to evaluate the effect of high intensity interval training on apelin and nitric oxide changes as vasodilators and regulators of blood pressure. In this study, apelin and nitric oxide were measured before and after 6 weeks of interval training. For this purpose, 2 groups: experimental (n=10) and control (n=10) of middle aged men (age range 45-55) in Tehran city were randomly selected. High intensity interval training protocol consisted of 10 intervals (45 seconds with 85-90% of heart rate reserve and 2 minutes of recovery) which was performed by the experimental group in 6 weeks. At the end of the third week, intensity of training increased to 12 training intervals and 90 seconds of recovery. 48 hours after the last training session, blood samples and anthropometric measures and body composition were taken. The results showed that 6 weeks of high intensity interval training intervention significantly increased apelin (P=0.001) and nitric oxide (P=0.001) while it significantly reduced systolic (P=0.001) and diastolic (P=0.002) blood pressures in the experimental group. The results indicated the beneficial effect of exercise on apelinergic system and blood pressure and also showed that those with high blood pressure may have high intensity interval activity. However, this idea requires further research on the role of high intensity interval training and its relationship with blood pressure.
کلیدواژه‌ها [English]
- apelin
- blood pressure
- cardiovascular system
- high intensity interval training
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