اثر یک ماه تمرین ترکیبی با مکمل دهی کافئین و بدون آن بر هزینه انرژی استراحت و مقاومت به لپتین زنان مبتلا به اضافه‌وزن

نویسندگان

1 گروه فیزیولوژی ورزشی، دانشکده تربیت‌بدنی و علوم ورزشی، دانشگاه شهید بهشتی، تهران، ایران

2 گروه فیزیولوژی ورزشی، دانشکده تربیت‌بدنی و علوم ورزشی، دانشگاه تبریز، تبریز، ایران

3 گروه فیزیولوژی، دانشکده پزشکی، دانشگاه علوم پزشکی تبریز، تبریز، ایران

چکیده

مقدمه و هدف: مقاومت به لپتین عامل خطر مهمی برای چاقی به حساب می‌آید. لذا هدف از پژوهش حاضر، تعیین اثر یک ماه تمرین ترکیبی با و بدون مصرف کافئین بر هزینه انرژی استراحت و مقاومت به لپتین زنان دارای اضافه­وزن بود.
 
مواد و روش­ها: 20 زن غیر ورزشکار دارای اضافه‌وزن در قالب یک طرح نیمه تجربی دو گروهی پیش‌آزمون-پس‌آزمون به مدت چهار هفته در یک دوره تمرینات ترکیبی (3 جلسۀ 5/1 ساعته در هفته، تمرینات ایروبیک با شدت بین 85-65% ضربان قلب ذخیره و تمرینات مقاومتی با شدت 70-75 درصد یک تکرار بیشینه) با و بدون مکمل دهی کافئین (5 میلی‌گرم در کیلوگرم وزن بدن در روز) شرکت کردند. تغییرات هزینه انرژی استراحتی و مقاومت به لپتین طی دو مرحله (حالت پایه و 24 ساعت پس از اتمام دورۀ تمرینات) اندازه‌گیری شد.
 
نتایج: یافته‌ها حاکی که سطوح لپتین ناشتای سرمی پس از یک ماه در هر دو گروه کاهش معنی‌داری می‌یابد (04/0P=)، ولی میزان کاهش بین دو گروه تفاوت معنی­داری نداشت. هم­چنین؛ مکمل دهی کافئین همراه با تمرینات ترکیبی توانست انرژی مصرفی استراحتی (REE) را افزایش داده و شاخص مقاومت به لپتین را پس از یک ماه کاهش دهد (032/0P=).
 
نتیجه­ گیری: بر اساس یافته­های این مطالعه می‌توان نتیجه گرفت که انجام یک ماه تمرینات ترکیبی ایروبیک-مقاومتی در هر دو گروه، بخصوص با توجه به کاهش بیشتر شاخص­های مورد مطالعه در گروه مصرف­کننده کافئین، امکان دارد از عوامل خطر مربوط به چاقی در دختران دارای اضافه‌وزن جلوگیری نماید.
 

کلیدواژه‌ها


عنوان مقاله [English]

Effect of one-month concurrent training with or without caffeine supplementation on resting energy expenditure and leptin resistance in overweight women

نویسندگان [English]

  • Afshar Jafari 1
  • Sara Farajpour Khazaei 2
  • Mohammadreza Alipour 3
چکیده [English]

Background and Objective: Leptin resistance is an important risk factor for obesity. So, the present study was conducted in order to determine the effectiveness of one-month concurrent training with and without caffeine ingestion on the resting energy expenditure and leptin resistance in overweight women.
 
Materials and Methods: 20 non-athlete and overweight women in a double-blind and quasi-experimental designs in the two groups pre-post intervention (concurrent training group + placebo and concurrent training group + caffeine) for 4 weeks of a concurrent training (three sessions per week for 1.5 hours per session; aerobic training with an intensity between 65-85% heart rate reserve and resistance training with an intensity of 70-75% of one repetition maximum) with and without caffeine (5 mg.kg-1.day). Changes in resting energy expenditure and leptin resistance during two phases (baseline and 24 hours after completing the training period).
 
Results: Serum fasting leptin levels significantly reduced in both groups following one month period of concurrent training (p=0.04). However, there was no significant difference between the two groups. Also, caffeine supplementation administered together with concurrent training could increase resting expenditure energy (REE) and decrease leptin resistance index after one month (p=0.032).
 
Conclusion: Based on the findings of this study, it can be concluded that one month of aerobic-resistance concurrent training in both groups, especially with considering the further reduction of the indices studied in the caffeine consumer group; maybe prevent the risk factors associated with obesity in overweight women.
 

کلیدواژه‌ها [English]

  • Concurrent Training
  • Caffeine
  • Obesity
  • Resting energy expenditure
  • Leptin resistance
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