Effect of oral DHEA on serum testosterone and adaptations to resistance training in young men.
نویسندگان
چکیده
This study examined the effects of acute dehydroepiandrosterone (DHEA) ingestion on serum steroid hormones and the effect of chronic DHEA intake on the adaptations to resistance training. In 10 young men (23 +/- 4 yr old), ingestion of 50 mg of DHEA increased serum androstenedione concentrations 150% within 60 min (P < 0.05) but did not affect serum testosterone and estrogen concentrations. An additional 19 men (23 +/- 1 yr old) participated in an 8-wk whole body resistance-training program and ingested DHEA (150 mg/day, n = 9) or placebo (n = 10) during weeks 1, 2, 4, 5, 7, and 8. Serum androstenedione concentrations were significantly (P < 0.05) increased in the DHEA-treated group after 2 and 5 wk. Serum concentrations of free and total testosterone, estrone, estradiol, estriol, lipids, and liver transaminases were unaffected by supplementation and training, while strength and lean body mass increased significantly and similarly (P < 0.05) in the men treated with placebo and DHEA. These results suggest that DHEA ingestion does not enhance serum testosterone concentrations or adaptations associated with resistance training in young men.
منابع مشابه
تاثیر ورزش تاحد خستگی بر روی هورمونهای پرولاکتین، تستوسترون و دهیدرواپی آندرستن سولفات (DHEA-S) در مردان دونده
Background &Aims : The effect endurance exercises on hypothalamus are not clear. Exercise is a powerful stimulus for the endocrine system and depends on several factors, ie: duration, intensity and the mode of exercise and training status. Materials & Methods : One hundred and thirty volunteered runner men entered to this project but 16 men selected randomly. Excluding from this project wer...
متن کاملEffects of Resistance Training on Serum Cortisol and Dehydroepiandrosterone Levels in Trained Young Women
Background & Objectives:Endocrine hormones, through their anabolic or catabolic function, contribute in body homeostasis. They can be used to assess the physical performance in athletes. This study was performed to determine the resistance training (RT) influences on serum cortisol and dehydroepiandrosterone in trained young females. Materials & Methods:The study population c...
متن کاملThe Effect of 8 Weeks Resistance Training With Low Load and High Load on Testosterone, Insulin-like Growth Factor-1, Insulin-like Growth Factor Binding Protein-3 Levels, and Functional Adaptations in Older Women
Objectives The loss of muscle mass in older adults is attributed to the impaired ability of the skeletal muscle in response to anabolic stimuli and the increased activation of the proteolytic signaling pathway. With increasing age, plasma concentrations of circulating anabolic hormones and growth factors, e.g. testosterone, Insulin-like Growth Factor-1 (IGF-1) and Insulin-like Growth Factor Bin...
متن کاملEffect of Endurance and Resistance Training on Parameters Related to Sexual Function in Men
Abstract Background and Objective: The hormonal responses are different, according to type, intensity and the duration of training. We aimed to compare the effect of endurance and resistance training in untrained men on the level sexual hormone including testosterone, estradiol, and on sex hormone binding globulin (SHBG). Material and Methods: this study was conducted on male Student Volunteers...
متن کاملThe effect of resistance training and date pollen extract on bone tissue density and osteoblast cell proliferation in young male rats
Extended Abstract 1.Introduction One of the tissues that is affected by physical activity is bone. Bone is one of the tissues that needs to receive mechanical load to have normal function as a key factor in strengthening bone mass (2). Evidence shows that the mechanical load resulting from physical activity activates a set of proteins involved in the process of osteoblast activation and inhib...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of applied physiology
دوره 87 6 شماره
صفحات -
تاریخ انتشار 1999