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Effects of Ascorbic Acid on Serum Cortisol and the Testosterone: Cortisol Ratio in Junior Elite Weightlifters.

Marsit, Joseph L.; Conley, Michael S.; Stone, Michael H.; Fleck, Steven J.; Kearney, Jay T.; Schirmer, Ginger P.; Keith, Robert L.; Kraemer, William J.; Johnson, Robert L.
Journal of Strength & Conditioning Research: August 1998
Original Article: PDF Only

This study examined the short-term effects of the daily ingestion of ascorbic acid (1,000 mg/d) on resting and postexercise concentrations of serum Cortisol (Cort), testosterone (T), and the testosterone:Cortisol ratio (T:C) in 17 junior elite weightlifters. Subjects were assigned to one of two groups equated for body mass and weightlifting total. GAA received ascorbic acid each day. GP received a placebo similar in appearance to the ascorbic acid supplement. Subjects participated in a competitive, high volume, high intensity training program. Blood (fasting) was drawn 5 times: baseline, Day 16 preexercise, immediate post, 1-hr post, and 24 hrs post. Exercise consisted of typical large-muscle-mass exercises familiar to all subjects and was standardized based on relative intensity (% 1-RM). ANCOVA, using preexercise ascorbic acid concentrations as the covariant, showed a significant difference (p = 0.02) for Cortisol at 24 hrs post. Testosterone or the T:C ratio did not differ between groups at any point.

(C) 1998 National Strength and Conditioning Association