نوع مقاله : مقاله پژوهشی Released under (CC BY-NC 4.0) license I Open Access I
نویسندگان
1 دانشیار، گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه تبریز، تبریز، ایران
2 استاد گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه تبریز، تبریز، ایران
3 دانشجوی گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه تبریز، تبریز، ایران
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Aim: Aging is often associated with progressive loss of muscle mass and strength. high-intensity interval training (HIIT) and vitamin D intake may increase muscle mass, but its mechanism is largely unclear. The aim of the present study was to evaluate effect of eight weeks HIIT and vitamin D supplementation on IGF-1, myostatin and muscular hypertrophy in elderly men. Methods: In a experimental research design, 30 inactive elderly men were selected based on fat percentage and aerobic fitness and were randomly divided into three groups: HIIT, HIIT + vitamin D and control. The HIIT training program was performed for eight weeks, three days a week. The HIIT training program was three days a week with an intensity of more 75% reserve heart rate or equivalent to the Borg pressure index of 17-15. Blood samples were taken from the subjects 48 hours before and after the training and supplementation protocol. One-way analysis of variance were used to compare between-group research variables (P <0.05).Results: The amount of IGF-1 in both exercise groups (P= 0.003) and exercise + vitamin D (P= 0.0001) was significantly increased compared to the control group, but this difference was not significant between the experimental groups (P= 0.6). Also, the amount of myostatin in both exercise (P= 0.006) and exercise + vitamin D (P= 0.0001) groups was significantly lower than the control group, but this difference was not significant between the experimental groups (P= 0.6). Muscle cross-section showed a significant increase in the two groups (P <0.05) but there was no significant difference between the two groups (P= 0.721). Conclusions: It seams HIIT with and without vitamin D increases IGF-1 and muscle cross-section and decreases myostatin. It may reduce muscle atrophy in older men and be effective in older men.
کلیدواژه‌ها [English]
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