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تغییرات سطوح پایۀ تستوسترون و کورتیزول و نسبت آنها بعد از چهار هفته تمرین سنگ‌نوردی با محدودیت جریان خون در سنگ‌نوردان مرد نخبۀ ورزشی | ||
| نشریه علوم زیستی ورزشی | ||
| مقاله 5، دوره 13، شماره 1، خرداد 1400، صفحه 59-73 اصل مقاله (343.1 K) | ||
| نوع مقاله: مقاله پژوهشی Released under CC BY-NC 4.0 license I Open Access I | ||
| شناسه دیجیتال (DOI): 10.22059/jsb.2021.312058.1440 | ||
| نویسندگان | ||
| کریم عبادی فر1؛ حسن متین همایی* 2؛ عبدالعلی بنائی فر3 | ||
| 1دانشجوی دکتری، گروه فیزیولوژی ورزشی، دانشکدۀ تربیت بدنی، واحد تهران مرکزی، دانشگاه آزاد اسلامی، تهران، ایران | ||
| 2دانشیار، گروه فیزیولوژی ورزشی، دانشکدۀ تربیت بدنی، واحد تهران مرکزی، دانشگاه آزاد اسلامی، تهران، ایران | ||
| 3دانشیار، گروه فیزیولوژی ورزشی، دانشکدۀ تربیت بدنی، واحد تهران جنوب، دانشگاه آزاد اسلامی، تهران، ایران | ||
| چکیده | ||
| تمرین مقاومتی با محدودیت جریان خون (BFR) به‌منزلۀ راهبرد تمرینی پیشگیری‌کننده از آسیب‌های مفصلی و بافتی به افزایش هورمون‌های آنابولیک و افزایش هایپرتروفی و قدرت عضلانی منجر می‌شود. بنابراین هدف پژوهش حاضر بررسی تأثیر ۱۲جلسه تمرین سنگ‌نوردی با BFR بر تستوسترون، کورتیزول و نسبت آنها در خون سنگ‌نوردان نخبۀ ورزشی است. در این تحقیق نیمه‌تجربی با طرح پیش‌آزمون و پس‌آزمون۲۰ مرد از سنگ‌نوردان (وزن ۶۹/۴ ± ۵۵/۶۴ کیلوگرم، چربی ۵۰/۸± ۳۰/۱۵ درصد و سن ۶/۲ ±۲۶سال) به‌صورت هدفمند انتخاب و به‌طور تصادفی به دو گروه تمرین (هر کدام ۱۰مرد) با BFR و بدون BFR تقسیم شدند. پروتکل تمرین ۴ هفته و هر هفته ۳ جلسه تمرین سنگ‌نوردی بود. فشار بر عروق حدود ۴۰ تا ۱۰۰میلی‌متر جیوه بود. خون‌گیری به‌طور ناشتا ۲۴ساعت قبل و بعد از دورۀ تمرین به‌منظور تعیین میزان هورمون تستوسترون، کورتیزول انجام گرفت. همچنین عملکرد سرعت صعود و قدرت پنجۀ دست برتر سنجیده شد. داده‌ها با استفاده از آزمون تی همبسته و مستقل با سطح معناداری ۰۵/۰P< ارزیابی شد. نتایج نشان داد که در گروه BFR مقادیر تستوسترون (۰۲/۰=P)، نسبت تستوسترون به کورتیزول (۰۳/۰=P)، قدرت پنجۀ دست (۰۰۶/۰=P) و سرعت صعود (۰۳/۰=P) بعد از تمرین سنگ‌نوردی نسبت به قبل از آن افزایش معناداری داشت. همچنین میزان کورتیزول خون بعد از دورۀ تمرینی در هر دو گروه نسبت به قبل از آن تغییر معناداری نداشت (۵۴/۰=P، ۸۵/۰=P). به‌نظر می‌رسد تمرین سنگ‌نوردی با BFR به افزایش هورمون‌های آنابولیکی منجر می‌شود و از آن می‌توان به‌منظور بهبود عملکرد ورزشی سنگ‌نوردان استفاده کرد. | ||
| کلیدواژه‌ها | ||
| تستوسترون؛ سنگ‌نوردی؛ کورتیزول؛ محدودیت جریان خون | ||
| عنوان مقاله [English] | ||
| Changes in Basal Levels of Testosterone, Cortisol and Their Ratio after 4 Weeks of Rock Climbing Training with Blood Flow Restriction in Elite Male Rock Climbers | ||
| نویسندگان [English] | ||
| Karim Ebadifar1؛ Hasan Matinhomaee2؛ Abdolali Banaeifar3 | ||
| 1PhD Student, Department of Exercise Physiology, Faculty of Physical Education, Central Tehran Branch, Islamic Azad University, Tehran, Iran | ||
| 2. Associate Professor, Department of Exercise Physiology, Faculty of Physical Education, Central Tehran Branch, Islamic Azad University, Tehran, Iran | ||
| 3Associate Professor, Department of Exercise Physiology, South Tehran Branch, Islamic Azad University, Tehran, Iran | ||
| چکیده [English] | ||
| Resistance training with blood flow restriction (BFR) as a training strategy preventing joint and tissue injuries, increases anabolic hormones, hypertrophy and muscle strength. Therefore, the aim of this study was to investigate the effect of 12 sessions of rock climbing with BFR on testosterone, cortisol and their ratio in elite rock climbers. In this quasi-experimental study with a pretest-posttest design, 20 male rock climbers (weight: 64.55±4.69 kg, fat percentage: 15.30±8.50 and age: 26±2.6 years) were selected purposively and were randomly divided into two training groups (10 men each) with BFR and without BFR. The training protocol was 4 weeks and 3 sessions of rock climbing per week. Blood pressure was about 40 to 100 mm Hg. Fasting blood samples were collected 24 hours before and after training to determine testosterone and cortisol levels. Also, the strength of the dominant hand grip and climbing speed were measured. Data were analyzed using paired and independent t tests at P<0.05. Results showed that the testosterone (P=0.02), the ratio of testosterone to cortisol (P=0.03), hand grip strength (P=0.006) and climbing speed (P=0.03) increased significantly after rock climbing training compared with the period before the training. Also, cortisol did not change significantly in both groups after the training compared with the period before the training (P=0.54, P=0.85). It seems that rock climbing training with BFR increases anabolic hormones and it can be used to improve the performance of rock climbers. | ||
| کلیدواژه‌ها [English] | ||
| Blood flow restriction, cortisol, rock climbing, testosterone | ||
| مراجع | ||
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