نوع مقاله : مقاله پژوهشی Released under (CC BY-NC 4.0) license I Open Access I
نویسندگان
1 دانشجوی دکتری، گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی دانشگاه تهران، دانشگاه تهران، ایران
2 استاد،گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی دانشگاه تهران، دانشگاه تهران، ایران
3 دانشیار ، گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی دانشگاه تهران، دانشگاه تهران، ایران
4 دانشیار مرکز تحقیقات درمان و پیشگیری از چاقی، پژوهشکده علوم غدد درون ریز و متابولیسم، دانشگاه علوم پزشکی و خدمات بهداشتی-درمانی شهید بهشتی، دانشگاه شهید بهشتی تهران، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Exercise training improved impaired mitochondrial protein and enzymatic functional induced aging. The purpose of this study was to investigate the effects of 12-weeks of high-intensity interval training on mitochondrial proteins of SIRT1, PGC-1α and ERRα in gastrocnemius muscle in aged rats. In this study 30 aged Wistar rats were randomly divided into HIIT and control group. Exercise training was performed 3 days per week for 8-weeks. Exercise training in the HIIT group was started in the first week by 16 minutes (four intervals (T=2min) at 85-90% VO2max with 4 recovery periods (T=2min) at 45-50% VO2max), which reached 28 minutes in the 12th week. Gastrocnemius was removed 48 h after the final training session. The expression levels of SIRT1, PGC-1α and ERRα proteins in gastrocnemius were assessed by Western blot method. Data analysis was done with independent samples t test. There were no significant differences in body weight and gastrocnemius muscle weight after the intervention. The protein expression of PGC-1α and ERRα were significantly increased in the HIIT compared to control group (p < 0.001). Moreover, SIRT1 expression was significantly elevated in the HIIT compared to control group (P <0.01). It seems that HIIT due to its high intensity and interval nature leads to an increased expression of SIRT1, PGC-1α and ERRα proteins in the gastrocnemius muscle of aging rat models.
کلیدواژهها [English]