Ammonia and Lactate: Differential Information on Monitoring Training Load in Sprint Events

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Abstract
Two hypotheses were tested concerning training relevance of ammonia in capillary blood compared with lactate after extensive and intensive high-paced runs. The hypotheses were tested in a field experiment with male sprinters n = 13. The experimental plan followed a design of repeated measures in a 4 × 4 Latin-square. The subjects completed four high-pace runs (300m) at 82.5%, 85%, 87.5%, and 90% of the maximum running intensity (identified in a contest). The results confirmed our first hypothesis. Significant increase in ammonia concentration was not found until after four runs at an intensity of 87.5% or after one 300-m run at maximum running speed. In contrast to this, a glycolytic reaction became evident in one run at 82.5% of the maximum intensity. Lactate concentration exceeded the anaerobic threshold at this point. Definite instructions for training practice cannot be made at the present state of research.