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Dynamic Exercise Discloses Different Time-Related Responses in Stress Hormones

From the Department of Medical Physiology and Sports Medicine (W.R.dV., N.T.M.B, M.H.dR.), University Medical Center Utrecht; and the Department of Endocrinology (H.P.F.K.), University Hospital Utrecht, Utrecht, The Netherlands.

View larger version (14K): [in a new window]   Fig. 1. Protocol of the incremental exercise test. Arrows indicate times of blood collection (before exercise, at the end of each block, and after 5 and 30 minutes of recovery). As an example, the duration of the last block (power output at 100% O2max) is set at 2 minutes.

View larger version (12K): [in a new window]   Fig. 2. Plasma concentrations of GH (top) and adrenalin (bottom) as a function of exercise and recovery. *Significantly different from immediately preceding level.

View larger version (13K): [in a new window]   Fig. 3. Plasma concentrations of PRL (top) and ACTH (bottom) as a function of exercise and recovery. *Significantly different from immediately preceding level.