Testosterone and cortisol in relationship to dietary nutrients and
resistance exercise.
Volek, Jeff S., William J. Kraemer, Jill A. Bush, Thomas Incledon, and
Mark Boetes.
Center for Sports Medicine, Department of Kinesiology, and Center
for Cell Research, The Pennsylvania State University, University
Park, PA 16802
APStracts 3:0439A, 1996.
Manipulation of resistance exercise variables (i.e., intensity,
volume, and rest periods) affect the endocrine response to exercise;
however, the influence of dietary nutrients on basal and exercise
-induced concentrations of hormones is less understood. The present
study examined the relationship between dietary nutrients and resting
and exercise-induced blood concentrations of testosterone (T) and
cortisol (C). Twelve men performed a bench press (BP) exercise
protocol (5 sets to failure using a 10 RM load) and a jump squat (JS)
protocol (5 sets of 10 repetitions using 30% of each subject's 1 RM
squat) with 2 min rest between all sets. A blood sample was obtained
at pre-exercise (pre-ex) and 5 min post-exercise (post-ex) for
determination of serum T and C. Subjects also completed detailed
dietary food records for a total of 17 days. There was a significant
(P
Received 10 April 1996; accepted in final form 21 August 1996.
APS Manuscript Number A341-6.
Article publication pending Journal of Applied Physiology.
ISSN 1080-4757 Copyright 1996 The American Physiological Society.
Published in APStracts on 7 October 1996