نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد، گروه فیزیولوژی ورزشی، واحد بناب، دانشگاه آزاد اسلامی، بناب، ایران.
2 دانشیار گروه فیزیولوژی ورزشی، واحد مهاباد، دانشگاه آزاد اسلامی، مهاباد، ایران.
3 استادیار گروه فیزیولوژی ورزشی، واحد بناب، دانشگاه آزاد اسلامی، بناب، ایران.
چکیده
زمینه و هدف: انجام فعالیت‌های ورزشی منظم به عنوان استراتژی ارجح و راهکار موثر برای کاهش سایتوکاین‌های التهابی مانند لیپوکالین دو (Lcn2) و بهبود مقاومت به انسولین در افراد چاق توصیه شده است. با توجه به وجود یافته‌های محدود و ناهمسو در رابطه با اثرگذاری تمرینات موازی مقاومتی و استقامتی و تاثیر ترتیب اجرای تمرین بر این نشانگرها؛ مطالعه حاضر با هدف مقایسه اثر ترتیب تمرین استقامتی و مقاومتی بر شاخص‌های ترکیب بدن، مقاومت به انسولین و سطح سرمی Lcn2 در زنان چاق غیر فعال به اجرا درآمد. روش تحقیق: تعداد 45 زن چاق غیرفعال در یک مطالعه نیمه تجربی با طرح پیش آزمون- پس آزمون، به صورت هدفمند شرکت کردند و به طور تصادفی به سه گروه کنترل (15 نفر)، تمرینات موازی مقاومتی+استقامتی (15 نفر) و تمرینات موازی استقامتی+مقاومتی (15 نفر) تقسیم شدند. برنامه‌های تمرینی به‌مدت 12 هفته، سه جلسه در هفته به اجرا درآمدند. تمرین استقامتی مشتمل بر دویدن روی نوارگردان به مدت 20 دقیقه در هر جلسه با شدت 75-55 درصد حداکثر ضربان قلب؛ و تمرین مقاومتی مشتمل بر اجرای حرکات در هشت ایستگاه، دو نوبت، با 15-8 تکرار و شدت 75-55 درصد یک تکرار بیشینه بود. 48 ساعت قبل از شروع تمرینات و 48 بعد از آخرین جلسۀ تمرینی، شاخص‌های ترکیب بدن و نمونه‌های خونی سرم در حالت ناشتایی مورد اندازه‌گیری قرار گرفت. از آزمون آماریt زوجی و آزمون تحلیل کوواریانس در سطح معنی داری 0/05>p استفاده شد. یافته‌ها: هر دو برنامه تمرین موازی، باعث کاهش معنی‌دار شاخص‌های ترکیب بدنی (وزن، درصد چربی بدن، شاخص توده بدنی، نسبت دورکمر به لگن) و نشانگرهای HOMA-R و Lcn2 سرمی شدند (0/05>p). با این حال، اختلافی بین اثر دو شیوه تمرین موازی مشاهده نشد (0/05<p). از طرف دیگر، کلیه این شاخص‌ها در گروه کنترل بدون تغییر باقی ماندند (0/05>p). نتیجه‌گیری: انجام تمرینات موازی صرف نظر از ترتیب اجرای آن، می‌تواند راهکار درمانی موثری برای بهبود نشانگرهای خطرزای چاقی از جمله مقاومت به انسولین و نشانگر التهابی Lcn2 در زنان چاق باشد.
کلیدواژه‌ها
عنوان مقاله [English]
Comparison of the effect of endurance and strength concurrent training order on the level of the lipocalien-2 and insulin resistance in inactive obese women
نویسندگان [English]
- Somaye Maheri 1
- Sirvan Atashak 2
- Reza Roshdi Bonab 3
1 MSc Student, Department of Exercise Physiology, Bonab Branch, Islamic Azad University, Bonab, Iran.
2 Associate Professor, Department of Exercise Physiology, Mahabad Branch, Islamic Azad University, Mahabad, Iran
3 Assistant Professor, Department of Exercise Physiology, Bonab Branch, Islamic Azad University, Bonab, Iran.
چکیده [English]
Background and Aim: The regular exercise training has been recommended as a preferred strategy and effective approach to reduce of the inflammatory cytokines such as lipocalin- 2 (Lcn2), and also can improve of the insulin resistance in obese individuals. Therefore, due to the findings limitation on the different order of concurrent endurance and strength training and the effect of the this area, the aim of the study was to compare the effect of different order of endurance and strength concurrent training on body composition, insulin resistance and serum level of the Lcn2 in inactive obese women. Materials and Methods: Fourty five inactive obese women in a semi-experimental with pre-test and post-test design purposefully participated and randomly divided into three groups including control (n=15), resistance + endurance training (n=15) and endurance + strength training (n=15) group. Training program was performed 12 weeks and 3 times per week. The endurance training also was performed 20 minutes running on treadmill in each session with 55-75% HRmax intensity as the same for strength training it was included two sets on eight stations with 8-15 repetitions up to 55-75% one repetition maximum. Body composition indices and fasting blood serum samples were measured 48 hours before the start of training and also after the last training session. For statistical analysis paired samples t-test and analysis of covariance at the significant level of p<0.05 were used. Results: The results indicated both type of exercise training could significantly decreased the body composition indices (weight, body fat percent, body mass index, waist to hip ratio), insulin resistance (HOMA-IR) and concentration of the serum Lcn2 (p<0.05). But there were no significant differences between two concurrent training methods (p>0.05), and these biomarkers did not show any significant change in the control group (p>0.05). Conclusion: The concurrent training, independent of the order of exercise, can be an effective method to improve of obesity risk factors such as body composition, insulin resistance and Lcn2 marker in obese women.
کلیدواژه‌ها [English]
- Concurrent training
- Insulin resistance
- Body composition
- Lipocalin-2
- Obesity
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