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تاثیر تمرین هوازی بر شاخص مقاومت به انسولین و ترکیب بدن پسران چاق در دوران بلوغ | ||
| پژوهشنامه فیزیولوژی ورزشی کاربردی | ||
| مقاله 2، دوره 12، شماره 23، اردیبهشت 1395، صفحه 29-42 اصل مقاله (299.95 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22080/jaep.2016.1306 | ||
| نویسندگان | ||
| محمدرضا فدائی چافی* 1؛ فرهاد رحمانی نیا2؛ حمید محبی2؛ سید محسن مداح3؛ زهرا عطرکار روشن4 | ||
| 1دانشجوی دکتری فیزیولوژی ورزشی، دانشگاه گیلان ،ایران | ||
| 2استاد فیزیولوژی ورزشی، دانشگاه گیلان، ایران | ||
| 3استادیار تغذیه، دانشگاه علوم پزشکی گیلان،ایران | ||
| 4استادیار آمار زیستی ،دانشگاه علوم پزشکی گیلان، ایران | ||
| تاریخ دریافت: 18 مهر 1393، تاریخ بازنگری: 22 مهر 1395، تاریخ پذیرش: 06 آبان 1393 | ||
| چکیده | ||
| سابقه و هدف: دوران بلوغ به دلیل رشد پرشتاب جسمانی، بیشتر تحت تاثیر چاقی و روشهای کنترل آن قرار میگیرد. هدف از این مطالعه بررسی تاثیر تمرین هوازی بر شاخص مقاومت به انسولین و ترکیب بدن پسران چاق در دوران بلوغ بود. مواد و روشها: تحقیق حاضر با طرح پیشآزمون و پسآزمون بهصورت مقطعی اجرا شد. آزمودنیها شامل 36 پسر چاق 12 تا 17 سال بودند که بر اساس مقیاس تانر در مراحل 2 (TS2) تا 5 (TS5) بلوغ قرار داشتند. آنها بر اساس بلوغ در دو گروه TS2,3 و TS4,5 همسانسازی شدند و هر کدام نیز در دو گروه تمرین هوازی و کنترل قرارگرفتند. پس از اندازهگیریهای آنتروپومتریکی، سطوح سرمی گلوکز و انسولین درحالت ناشتا اندازهگیری شد. شاخص مقاومت به انسولین به روش HOMA-IR محاسبه شد. گروه تمرین هوازی به مدت 12 هفته، هفتهای 3 بار به طور میانگین 30 دقیقه با شدت 60 تا 85 درصد ضربان قلب بیشینه دویدند. از پدومتر برای اندازهگیری سطح فعالیت بدنی استفاده شد. از آزمونهای آماری t وابسته و مستقل ، آنالیز واریانس یک طرفه و دو طرفه برای تجزیه و تحلیل دادهها استفاده شد. یافتهها: پس از 12 هفته کاهش درصد چربی بدن و گلوکز سرم و همچنین افزایش توده خالص بدن در گروه تمرین هوازی در هر دو مرحله بلوغ معنیدار بود (05/0 p). کاهش شاخص توده بدنی و کاهش توده چربی بدن فقط در گروه تمرین هوازی در سطح TS 4,5 بلوغ معنیدار بود (05/0 p). کاهش انسولین فقط در سطح TS2,3 معنیدار بود (05/0 p). در همه گروهها بجز گروه کنترل در سطح TS4,5 کاهش HOMA-IR معنیدار بود؛ اما بین تغییرات آن در دو گروه تمرین هوازی و کنترل، تفاوت معنیداری دیده نشد. نتیجهگیری: تمرین هوازی تغییرات مطلوبی در HOMA-IR و ترکیب بدنی پسران چاق ایجاد کرد؛ اما بخشی از این تغییرات حاصل فرایند طبیعی رشد در دوران بلوغ بود، چون مشابه آن در گروه کنترل نیز دیده شد. برخلاف نتایج سایر تحقیقات، کاهش HOMA-IR پیامد کاهش وزن، شاخص توده بدن و یا توده چربی نبود. در مقابل میتوان چنین پیشنهاد کرد که کاهش HOMA-IR در دوران بلوغ، حاصل کاهش درصد چربی بدن است. همچنین در پیشآزمون HOMA-IR کمتر در مراحل پایانی بلوغ (TS4,5) با کاهش بیشتری در شاخص توده بدن و توده چربی بدن همراه بود. با این وجود در تفسیر این نتایج باید محتاط بود، چون این تغییرات به دلیل تعداد کم آزمودنیها در هر زیر گروه، معنیدار نشد. | ||
| کلیدواژه‌ها | ||
| شاخص مقاومت به انسولین؛ ترکیب بدن؛ تمرین هوازی؛ مراحل بلوغ؛ پسران چاق | ||
| عنوان مقاله [English] | ||
| Effect of aerobic exercise on insulin resistance index and body composition during puberty in obese boys | ||
| نویسندگان [English] | ||
| . .1؛ . .2؛ . .2؛ . .3؛ . .4 | ||
| 1. | ||
| 2. | ||
| 3. | ||
| 4. | ||
| چکیده [English] | ||
| Background&Purpose: Puberty, due to the rapid physical growth, can be more influenced by obesity and Its control methods.The purpose of this study was to investigate the effects of aerobic exercise on insulin resistance index and body composition during puberty in obese boys. Methodology: A cross-sectional study design with pre-test, post-test. The subjects included 36 obese boys aged 12 to 17 years, according to the Tanner stage of puberty were TS2 to TS5. The subjects in both groups TS2,3 (n=19 , age= 13.4±0.94 , Weight=76.61±16.7 , BMI=29.41±5.22 ) and TS4,5 (n=17 , age= 14.9±1.48 , Weight=93.57±16.48 , BMI=30.92±3.88) divided into the aerobic exercise and the control gruops. After anthropometric measurements, fasting serum’s glucose and insulin levels were measured. insulin resistance index calculated by homeostasis model of assessment - insulin resistance (HOMA-IR). The aerobic exercise group completed 12 weeks of ruining, three times a week on average 30 minutes with an intensity of 60 to 85 percent of maximum heart rate. Pedometer was used to measure the level of physical activity. The statistical t-test, one-way and two-way ANOVA was used to analyze the data. Results: After 12 weeks, body fat percent and Serum glucose decreased and Lean body mass increased significantly in aerobic exercise group at tow stages of puberty (p≤0.05). In aerobic exercise group decrease in BMI, body fat only in TS4,5 was significant (p≤0.05). Insulin reduction was significant only in the TS2,3 (p≤0.05).HOMA-IR was significantly decreased in all groups except the control group in the TS4,5. But the changes in aerobic exercise and control groups, no significant differences were observed. Conclusion: Aerobic exercise created desirable changes in the HOMA-IR and body composition in obese boys. but a part of these changes are the result of the natural process of growth during puberty, Because similar changes were also observed in the control group. Unlike other research the reduction in HOMA-IR was not result of Reduction in weight, BMI or fat mass , But the changes in body fat percent can be a better indicator for HOMA-IR in puberty.In Pretest, less HOMA-IR in the final stages of puberty (TS4,5) was associated with a greater reduction in BMI and body fat mass. However, Should be cautious in interpreting these results Because these changes was not significant due to the low number of subjects in sub groups. | ||
| کلیدواژه‌ها [English] | ||
| HOMA-IR, body composition, Aerobic training, Pubertal stages, Obese boys | ||
| مراجع | ||
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