تاثير تمرينات همزمان مقاومتي-استقامتي بر تركيب بدن، پروفايل ليپيدي و هموستاز گلوكز خون دختران چاق: يك مطالعه كارآزمايي باليني

Effects of concurrent resistance-endurance training on body composition, lipid profile and blood glucose homeostasis in obese girls: A clinical trial

مقدمه: شيوع چاقي كودكان و نوجوانان در سراسر جهان به سرعت در حال افزايش است. هدف از تحقيق حاضر بررسي تاثيرتمرينات همزمان مقاومتي- استقامتي بر تركيب بدن،هموستاز گلوكز و چربي خون دختران چاق بود. روش:در اين پژوهش كارآزمايي باليني،20 دانش­آموز داوطلب دختر (13 تا 15 سال) ، بصورت تصادفي به دو گروه تجربي (10 نفر) و شاهد (10 نفر) تقسيم شدند. تمرينات همزمان مقاومتي و استقامتي به مدت دوازده هفته انجام شد. تمرينات مقاومتي با شدت 50 % تا 80% يك تكرار بيشينه(RM1) و تمرينات استقامتي نيز از 50 % تا 80% ضربان قلب هدف انجام شد. نمونه هاي خون و تركيب بدن قبل و پس از تمرينات اندازه گيري شد. يافته ها: نتايج نشان داد كه در شاخص توده بدن(0/03=P)، وزن، درصد چربي، چربي زير جلد(0/001=P) ، هموگلوبينALc (0/02=P) كاهش و ليپوپروتئين با چگالي بالا افزايش معني داري وجود داشت(0/02=P).اما در ميزان ليپوپروتئين با چگالي پايين، كلسترول ، تري­گليسريد، قند خون ناشتا و انسولين پلاسما تغييري مشاهده نشد (0/05

Introduction: The prevalence of obesity in childhood and adolescence increases rapidly worldwide. The present study aimed at investigating the effect of concurrent resistance-endurance exercises on body composition, glucose homeostasis, and lipid profile of females with obesity. Methods: In the current clinical trial, 20 female students (aged 13 to 15 years) were voluntarily selected and were randomly divided into experimental (n=10) and control (n=10) groups. The concurrent resistance-endurance exercises were performed for 12 weeks. The resistance exercises were conducted at 50%-80% of one-repetition maximum (1RM), and endurance exercises were performed at 50%-80% of target heart rate. Blood samples and body composition were measured and determined before and after the exercises. Data were analyzed by paired samples and independent t test at α ≤ 0.05 as the significance level. Results: The results showed a significant decrease in body mass index (BMI) (P = 0.03), weight, body fat mass, subcutaneous fat (P = 0.001), hemoglobin A1c (P = 0.02), and increase in high-density lipoprotein (P = 0.02), but low-density lipoprotein, cholesterol, triglyceride, fasting blood sugar, and plasma insulin did not change significantly (P > 0.05). Conclusions: It seems that 12 weeks concurrent exercises can desirably improve body composition, hemoglobin A1c, and high-density lipoprotein in females with obesity