Abstract des Autors

On a regular basis applied measures for monitoring training are suitable to prevent overtraining. The determination of anabolic and catabolic hormones as well as catecholamines in blood widens the spectrum of methods to control training workload. Total testosterone, free testosterone as well as the testosterone/cortisol ratio show a decrease during periods of intensive training and increase again during following periods of regeneration. Clearly decreasing concentrations and values (decrease of testosterone/cortisol > 30%) indicate overstrain or insufficient regeneration. During anaerobic work hormonal parameters seem to react more sensitive to overstrain than urea. The catecholamines adrenaline and noradrenaline correlate with lactate and can be applied to monitoring training as well. But in single cases already at low lactate concentrations the sympathetic activity is seen to be relatively high, which has to be taken into consideration for establishing training intensities based on lactate. At present, for mainly methodical reasons the routine application of hormonal parameters for monitoring training is not possible. Verf.-Referat