Effect of resistance exercise and pre-workout dietary supplement ingestion on acute response of testosterone, growth hormone, and cortisol in athlete men

Poster Presentation
Paper ID : 1045-12THCONG
Oral / Poster Presentation File: 1045.JPG 
1Department exercise physiology, Faculty of sport science shahid chamran university Ahvaz, Ahvaz, iran.
2Department exercise physiology, Faculty of sport science Shahid chamran university of Ahvaz, Ahvaz, iran
3Department exercise physiology, Faculty of sport science Shahid chamran university Ahvaz, Ahvaz, iran.
resistance exercise is an important factors to stimulate anabolic and catabolic hormones. However, ingestion dietary supplements before and after resistance exercise can led to changes in the hormonal response.
the propose of this study was examination the effect acute ingestion of pre-workout dietary supplement on hormonal response. Eight male physical education students (BMI 22.66±1.4 age 19.1±1.1 and PBF12.7±1.9) selected and purposive sampling double blind placebo-controlled crossover design. Supplement include: a single serving 6.5 gr of pre-workout c4 cellucor nutrition and 6.5 gr maltodextrin as placebo were also considered. The exercise protocol was including: 7 exercise whole body movement that performed in 75% 1RM for 3 set withe 10 repetitions in ache set. Blood sampling participants were obtained before, immediately post and one hour later for concentration assays serum of testosterone, growth hormone, cortisol and blood levels of lactate.
The results had shown that there were no significant differences acute responses of cortisol and testosterone hormone immediately post and one hour later between placebo and ingestion supplement. (p>0.05). whereas, concentration serum of growth hormone after ingestion pre-workout supplement increased in comparison with placebo (p<0.05).
In this study had been showed that although pre-workout supplement produced more growth hormone secretion than placebo, however, acute pre-workout supplement had no significant effect on the acute response of cortisol, testosterone and lactate hormones to athlete compared to placebo. The results of this study indicate that ingestion pre-workout supplement withe performing resistance exercise had no significant effect were observed on the acute hormonal response.