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Table 2 Regular physical activity and serum hormone concentrations in elderly men (mean ± S.E.M.)

From: The effects of long-term endurance training on the immune and endocrine systems of elderly men: the role of cytokines and anabolic hormones

Hormones Elderly runners Sedentary controls
DHEA-S (μg/dl) 79 ± 6 92 ± 14
Free testosterone (pmol/l) 258.4 ± 15.5 271.6 ± 19.1
Total testosterone (ng/dl) 529 ± 41 456 ± 36
GH (μg/l) 0.44 ± 0.12 0.68 ± 0.32
Cortisol (μg/dl) 13.7 ± 0.6 13.2 ± 0.8
Cortisol/DHEA-S 0.19 ± 0.01 0.19 ± 0.02
  1. No statistical differences were observed between groups