تأثیر 8 هفته رژیم کم کربوهیدرات و تمرین کراس‌فیت بر سطوح گرلین، انسولین و اشتها در زنان ورزشکار

نوع مقاله : مقاله های پژوهشی

نویسندگان

1 گروه فیزیولوژی ورزشی، دانشکده‌ی علوم ورزشی، دانشگاه آزاد اسلامی، واحد اصفهان (خوراسگان)، اصفهان، ایران

2 دانشیار، گروه فیزیولوژی ورزشی، دانشکده‌ی علوم ورزشی، دانشگاه آزاد اسلامی، واحد اصفهان (خوراسگان)، اصفهان، ایران

3 دانشیار، گروه تربیت بدنی و علوم ورزشی، دانشکده‌ی تربیت بدنی و علوم ورزشی، واحد خوراسگان، دانشگاه آزاد اسلامی، اصفهان، ایران

چکیده

مقدمه: اشتهای انسان توسط یک ماتریکس پیچیده از عوامل مختلف کنترل می‌ شود. از این رو، مطالعه‌ی حاضر به منظور تعیین اثر رژیم کم کربوهیدرات و تمرین کراس‌فیت بر سطوح گرلین، انسولین و اشتها انجام شد.روش‌ها: در این مطالعه‌ی نیمه‌تجربی، ۸۳ نفر زن با میانگین سنی 7/7 ± 5/32 سال، وزن 5/5 ± 5/60 کیلوگرم و شاخص توده‌ی بدنی 7/1 ± 3/22 کیلوگرم/مترمربع به صورت هدفمند انتخاب و در چهار گروه رژیم کم کربوهیدرات، تمرین کراس‌فیت، ترکیبی (رژیم و تمرین) و شاهد تقسیم شدند. گروه‌های تمرین به مدت 8 هفته و در هر هفته 3 جلسه تمرینات کراس‌فیت و گروه‌های رژیم، طی همان زمان برنامه‌ی غذایی کم کربوهیدرات شامل 40 درصد کربوهیدرات، 40 درصد چربی و 20 درصد پروتئین را اجرا کردند. غلظت هورمون گرلین و انسولین پس از 12 ساعت ناشتایی در 48 ساعت قبل و بعد از مداخله اندازه‌گیری و بر حسب گروه‌های تحت مطالعه، مورد تجزیه و تحلیل قرار گرفت.یافته‌ها: گرلین در گروه رژیم (001/0 = P) و گروه ترکیبی (008/0 = P) به ‌طور معنی‌داری کاهش داشته و در دو گروه تمرین و شاهد بدون تغییر بوده است. میزان اشتها در دو گروه رژیم (003/0 = P) و ترکیبی (010/0 = P) کاهش معنی‌دار و در گروه تمرین (040/0 = P) افزایش معنی‌دار داشته و در گروه شاهد، بدون تغییر بوده است. میزان انسولین در هیچ‌ یک از گروه‌ها تغییر معنی‌دار نداشت.نتیجه‌گیری: بر اساس یافته‌های این مطالعه، می‌توان نتیجه‌گیری کرد با کاهش کربوهیدرات دریافتی، اشتها و غلظت گرلین کاهش می‌یابد. از سوی دیگر، افراد بدون محدودیت غذایی، پس از انجام تمرینات قدرتی پر شدت بدون تغییر معنی‌دار در سطوح گرلین، تمایل به دریافت جبرانی غذا دارند.

کلیدواژه‌ها

عنوان مقاله [English]

The Effect of 8 Weeks Low Carbohydrate Diet and Cross-Fit Training on Ghrelin, Insulin, and Appetite Levels in Active Woman

نویسندگان [English]

  • Shokoofeh Samouei 1
  • Farzaneh Taghian 2
  • Gholamreza Sharifi 3
1 Department of Sports Physiology, School of Sports Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
2 Associate Professor, Department of Sports Physiology, School of Sports Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
3 Associate Professor, Department of Physical Education and Sport Science, School of Sports Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
چکیده [English]

Background: Human appetite is controlled by a complex matrix. The aim of this study was to determine the effect of low carb diet and cross-fit training on the levels of ghrelin, insulin, and appetite.Methods: In this semi-experimental study, 83 healthy women with an average age of 32.5 ± 7.7 years, weight of 60.5 ± 5.5 kg and body mass index of 22.7 ± 1.7 kg/m2 were selected using targeted sampling method, and randomly divided to 4 groups of low carbohydrate diet, cross-fit training, combination, and control. Training groups followed 3 sessions each week for 8 weeks, and diet groups followed a low-carb diet with 40 percent carbohydrate, 40 percent fat, and 20 percent protein for eight weeks. Ghrelin and insulin concentrations were measured after 12 hours of fasting at the baseline position and 48 hours after the last training session. Data were analyzed based on different groups.Findings: The amount of ghrelin in the diet group (P = 0.001) and the combined group (P = 0.008) significantly reduced, and in exercise and control groups was unchanged. Appetite rate decreased significantly in the two groups of diet (P = 0.003) and combination (P = 0.010), significantly increased in the exercise group (P = 0.040) and did not differ in the control group. Insulin levels did not change significantly in any of the groups.Conclusion: It can be concluded that a low carb diet reduces appetite and ghrelin concentration. More, the combined effect of exercise with diet is more effective than exercise alone. On the other hand, people without dietary restrictions tend to receive food compensation after intense strength training.

کلیدواژه‌ها [English]

  • Low-carbohydrates diet
  • Ghrelin
  • Insulin
  • Appetite
  • High-Intensity Interval Training

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سابقه مقاله

  • تاریخ دریافت: 15 شهریور 1399
  • تاریخ بازنگری: 01 اردیبهشت 1403
  • تاریخ پذیرش: 17 فروردین 1401

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