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Int J Sports Med 1987; 08: S61-S65
DOI: 10.1055/s-2008-1025705
© Georg Thieme Verlag Stuttgart · New York

Relationships Between Training Volume, Physical Performance Capacity, and Serum Hormone Concentrations During Prolonged Training in Elite Weight Lifters

K. Häkkinen1 , A. Pakarinen2 , M. Alén3 , H. Kauhanen1 , P. V. Komi1
  • 1Department of Biology of Physical Activity, University of Jyväskylä, SF-40100 Jyväskylä, Finland
  • 2Department of Clinical Chemistry, University of Oulu, SF-90220 Oulu, Finland
  • 3Department of Health Sciences, University of Jyväskylä, SF-40100 Jyväskylä, Finland
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Publication Date:
14 March 2008 (online)

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Abstract

A follow-up study of 1 year was performed on 11 male elite weight lifters. Several parameters including training volume, weight lifting performance, and serum hormone concentrations were measured during seven test occasions. In addition, the same measurements were repeated three times during a 6-week period preceding the primary competition, which took place about 5 months after beginning of the follow-up. The primary findings were observed during the 6-week period from which the first 2 weeks of stressful training was associated with significant decreases (P < 0.01-0.001) in serum testosterone concentration, in testosterone/cortisol and in testosterone/SHBG ratios, and with a significant (P < 0.001) increase in serum LH concentration. The individual changes during the stressful training in serum testosterone/SHBG ratio were related (r =.63; P < 0.05) to the individual changes in the weight lifting result in the clean and jerk lift. During the following “normal” 2-week and reduced 2-week training periods, the concentration of serum testosterone remained unaltered, but serum cortisol and serum LH decreased significantly (P < 0.05-0.01). During these periods, the serum testosterone/SHBG ratio increased (P < 0.01). The individual changes during this preparatory 4-week training before the primary competition in serum testosterone/SHBG ratio and the individual changes in the weight lifting result in the clean and jerk lift correlated significantly with each other (r = .68; P < 0.05). After 1 year training, no significant changes were noted in the concentrations of mean serum testosterone and Cortisol, while SHBG decreased (P < 0.05) and LH and FSH increased (P < 0.001 and 0.05). The results suggest that the follow-up of the concentrations of serum testosterone, SHBG, and possibly Cortisol may be useful in attempts to optimize the training process.

Key words

strength training - serum hormones - weight lifting - training volume - performance capacity

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