اثر تمرین صبح در مقایسه با تمرین عصر بر پاسخ اسپکسین و لپتین به هشت هفته تمرین استقامتی در زنان چاق

محورهای موضوعی : فصلنامه زیست شناسی جانوری

محمد کریمی ¹ (گروه تربیت بدنی و علوم ورزشی، دانشگاه صنعتی قم، قم، ایران)
مژگان بقایی برزآبادی ² (گروه تربیت بدنی و علوم ورزشی، دانشگاه صنعتی قم، قم، ایران)

تاریخ دریافت : 1402/02/17 تاریخ پذیرش : 1402/03/12 تاریخ انتشار : 1402/09/01

کلید واژه: چاقی, تمرین استقامتی, اشتها, ریتم شبانه‌روزی,

چکیده مقاله :

اختلال در تنظیم تعادل انرژی در شرایط چاقی دربرگیرنده مکانیسم‌های متعددی است که بسیاری از آنها هنوز به درستی شناخته شده نیستند. ریتم‌های شبانه‌روزی، نوسانات هورمونی و به ویژه هورمون‌های درگیر در بحث اشتها را به دنبال دارند. هدف از این تحقیق مطالعه اثر هشت هفته تمرین استقامتی در نوبت صبح در مقایسه با نوبت عصر بر مقادیر اسپکسین و لپتین زنان چاق بود. در این مطالعه نیمه تجربی 30 زن داوطلب چاق با میانگین سنی 4/4 ± 3/35 سال و نمایه توده بدنی 2/1 ± 7/31 کیلوگرم/مترمربع به طور تصادفی در سه گروه مساوی (10 = n) شامل گروه‌های کنترل، تمرین صبح و تمرین عصر تقسیم شدند. پروتکل تمرین استقامتی شامل به مدت هشت هفته، سه جلسه در هفته و با شدت 60 تا 75 درصد ضربان قلب بیشینه اجرا گردید. 48 ساعت قبل و پس از مداخله تمرین استقامتی، در شرایط 10 ساعت ناشتایی شبانه، خونگیری انجام شد. مقادیر اسپکسین و لپتین به روش الایزا ارزیابی شد. تجزیه و تحلیل داده ها با استفاده از آزمون تحلیل واریانس یکطرفه انجام شد. نتایج نشان داد مداخله تمرین در صبح و عصر منجر به کاهش معنادار در مقادیر لپتین (02/0 = p) و افزایش معنادار در مقادیر اسپکسین (03/0 = p) گردید. در مقایسه بین تمرین صبح و عصر، تغییرات لپتین (01/0 =p ) و اسپکسین (01/0=p ) در نوبت عصر بیشتر بود. بر اساس یافته های این مطالعه به نظر می‌رسد تمرینات استقامتی با شدت متوسط در یک دوره هشت هفته‌ای می‌تواند اثرات مثبتی بر هورمون‌های اسپکسین و لپتین در موضوع اشتها داشته باشد. تمرینات عصر نسبت به تمرینات صبح اثرات بهتری به دنبال دارد.

چکیده انگلیسی:

Disturbance in regulation of energy balance in obesity involves several mechanisms, many of which are still not well understood. Circadian rhythms are followed by hormonal fluctuations, especially hormones involved in appetite. The aim of this research was to study the effect of eight weeks of endurance training in the morning compared to the evening on the levels of spexin and leptin in obese women. In this semi-experimental study, 30 obese female volunteers with an average age of 35.3 ± 4.4 years and a body mass index of 31.7 ± 1.2 kg/m2 were randomly divided into three equal groups (n = 10) including; Control, morning training and evening training groups. The protocol of endurance training was carried out for eight weeks, three sessions per week and with an intensity of 60 to 75% of the maximum heart rate. 48 hours before and after the intervention of endurance training, blood sampling was done under conditions of 10 hours of overnight fasting. Spexin and leptin values were evaluated by ELISA method. Data were analyzed by using one-way analysis of variance test at a significance level of p<0.05. The results showed that exercise intervention in the morning and evening led to a significant decrease in leptin values (p=0.02) and a significant increase in spexin values (p=0.03). In comparison between morning and evening training, changes in leptin (p=0.01) and spexin (p=0.01) were higher in the evening session. Based on the findings of this study, it seems that endurance training with moderate intensity in a period of eight-week may have positive effects on the hormones of spexin and leptin in the matter of appetite. Evening training has better effects than morning training.

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