Abstract

Few data are available on the effects of training experience and lifting performance on acute hormonal responses to weightlifting in young males. 28 junior elite male weightlifters volunteered for the study. An acute weightlifting exercise protocol using moderate to high intensity loads and low volume was examined. Exercise protocol was directed toward the training associated with snatch lift weightlifting exercise. Blood samples were obtained at baseline, and again at pre-exercise, 5 and 15 min post-exercise time points for determination of serum testosterone, cortisol, growth hormone, plasma beta-endorphin, and whole blood lactate. The exercise protocol elicited significant increases in each of the hormones and whole blood lactate compared to pre-exercise measures. While not beeing significantly older, subsequent analysis revealed that subjects with >/=2 yrs training experience exhibited significant exercise-induced increases in serum testosterone from pre- to 5 min post-exercise, while those with <2 yrs training showed no significant serum testosterone differences. No other hormone nor blood lactate appear to be influenced by training experience. Exclusive from years of training, strength levels did not influence hormonal response patterns as lifters classified as strong showed no differential responses from those classified as weak as both groups demonstrated hormonal increases with acute exercise. Data suggest that training experience in elite adolescent weightlifters is most influential for hormonal adaptations. Verf.-Referat