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مقایسه واکنش اندوتلیالی و عصبی سمپاتیکی شریان بازویی وزنه برداران نخبه با گروه کنترل همسن کم تحرک | ||
نشریه علوم زیستی ورزشی | ||
مقاله 5، دوره 10، شماره 1، خرداد 1397، صفحه 59-75 اصل مقاله (220.02 K) | ||
نوع مقاله: مقاله پژوهشی Released under CC BY-NC 4.0 license I Open Access I | ||
شناسه دیجیتال (DOI): 10.22059/jsb.2018.240341.1202 | ||
نویسندگان | ||
مهدی خورشیدی حسینی* 1؛ لطفعلی بلبلی2؛ سلیم واحدی نمین3 | ||
1استاد یار، گروه تربیت بدنی و علوم ورزشی، دانشکده علوم انسانی، واحد اردبیل، دانشگاه آزاد اسلامی، اردبیل، ایران. | ||
2دانشیار گروه تربیت بدنی و علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه محقق اردبیلی، اردبیل، ایران | ||
3استادیار گروه تربیت بدنی و علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه محقق اردبیلی، اردبیل، ایران. | ||
چکیده | ||
هدف مطالعة حاضر مقایسة پاسخ های اندوتلیالی و عصبی سمپاتیکی شریان بازویی به محرک های اتساع و انقباض عروقی 23 سال) و هشت آزمودنی /5±2/ در وزنه برداران نخبه و گروه کنترل همسن ک متحرک است. هفت وزنه بردار نخبه (سن 2 24 سال) داوطلبانه در این پژوهش شرکت کردند. برای تعیین اندازه های شریان بازویی /3±2/ سالم کم تحرک (سن 12 در حالت استراحت، پس از 5 دقیقه انسداد بازو (اتساع عروقی وابسته به جریان) و طی تحریک سمپاتیکی حاد (تست فشار سرما) از اولتراسوگرافی داپلر وضوح بالا استفاده شد. پاسخ های واکنش عروقی به ترتیب از اوج تغییرات اتساعی و مستقل و انداز هگیری مکرر در سطح t انقباضی اندازة مجرای شریانی محاسبه شد و با استفاده از آزمون های آماری تجزیه وتحلیل شد. اندازة مجرای شریان بازویی وزنه برداران ب هترتیب در هر سه حالت پایه [میانگین P≤ 0/ معن اداری 05 و اوج انقباض [میانگین [(P=0/ 0 میلی متر ( 002 / اوج اتساع [میانگین تفاو تها 57 ،[(P=0/ 0 میل یمتر ( 001 / تفاوت ها 5 به طور معن اداری نسبت به گروه کنترل بزر گتر بود. هرچند تفاوت معن اداری بین [(P=0/ 0 میلی متر ( 003 / تفاوت ها 498 شاخص های اتساع عروقی وابسته جریان، انقباض شریانی وابسته به تون سمپاتیکی و دامنة عملیات فیزیولوژیک شریان نتایج مطالعة حاضر نشان داد که واکنش عملکردی .(P≤ 0/ بازویی وزنه برداران و گروه کنترل همسن مشاهده نشد ( 05 شریان بازویی لزوماً در وزنه برداران نخبه افزایش نمی یابد. هرچند، وزنه برداران نخبه از اندازة مجرای شریان بازویی بزرگ تری در مقایسه با گروه کنترل همسن سالم برخوردارند. | ||
کلیدواژهها | ||
شریان بازویی؛ عملکرد اندوتلیالی؛ وزنه برداران نخبه؛ واکنش عروقی | ||
عنوان مقاله [English] | ||
A Comparison of Sympathetic Neural and Endothelial Vasoreactivity of Brachial Artery in Elite Weightlifters with a Sedentary Age-Matched Control Group | ||
نویسندگان [English] | ||
Mahdi Khorshidi-Hosseini1؛ Lotfali Boboli2؛ Salim Vahedi3 | ||
1Assistant Professor, Department of physical education and sport sciences, Faculty of Humanities, Ardabil Branch, Islamic Azad University, Ardabil, Iran. | ||
2Associated Professor, Department of physical education and sport sciences, Faculty of education sciences and psychology, University of Mohaghegh Ardabili, Ardabil, Iran | ||
3Assistant Professor, Department of physical education and sport sciences, Faculty of education sciences and psychology, University of Mohaghegh Ardabili, Ardabil, Iran | ||
چکیده [English] | ||
The aim of the present study was to compare the sympathetic neural and endothelial responses of brachial artery to vasodilatory and constrictor stimuli in elite weightlifters and a sedentary age-matched control group. 7 elite weightlifters (age 23.5±2.2 yrs) and 8 sedentary healthy subjects (age 24.3±2.12 yrs) voluntarily participated in this study. High-resolution Doppler ultrasound was used to determine brachial artery diameters at rest, following 5 minutes of forearm occlusion [Flow Mediated Dilation (FMD)] and during acute sympathetic stimulation [cold pressure test (CPT)]. Vasoreactivity responses were calculated from the vasodilatory and constrictor peak changes in artery diameter. The acquired data were analyzed using independent t test and repeated measures method at P≤0.05. Brachial artery diameters in baseline [mean differences, 0.5 mm (P=0.001)], peak vasodilation [mean differences, 0.57 mm (P=0.002)] and peak constriction [mean differences, 0.498 mm (P=0.003)] were significantly greater in weightlifters than control group. However, no significant difference was observed in %FMD, %CPT and vascular operating range (VOR) between weightlifters and age-matched control group (P≤0.05). The present study indicated that the function of brachial artery is not necessarily enhanced in elite weightlifters. However, elite weightlifters had larger brachial artery diameter than age-matched healthy control subjects. | ||
کلیدواژهها [English] | ||
brachial artery, elite weightlifters, endothelial function, vasoreactivity | ||
مراجع | ||
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