The value of blood lactate concentration (BLC) measured during incremental load tests in predicting maximal lactate-steady-state (MLSS) workload has rarely been investigated in children. In 17 children and 18 adults MLSS was 4.1 ± 0.9mmol 1.1. Workload at BLC of 3.0mmol 1.1 determined during an incremental load test explained about 80% of the variance (p < .001) and best predicted MLSS workload independent of age. This was despite the increase in power per time related to maximum incremental load test power being higher (p < .001) in children than in adults. The BLC response to given exercise intensities is faster in children without affecting MLSS.
Beneke is with the Centre for Sport and Exercise Science, Dept. of Biological Sciences, University of Essex, Colchester, England, UK. Heck is with the Dept. of Sports Medicine, Ruhr-University, Bochum, Germany. Hebestreit is with the Pediatric Clinic, University Hospital, Würzburg, Germany. Leithäuser is with Biomedical Science, Dept. of Biological Sciences, University of Essex, Colchester, England, UK.