Abstract des Autors

Ten male and 9 female junior rowers participated in all-out rowing exercise, equivalent to the 2 km distance with individually maximal power output, using Concept II ergometer. Blood pH, hemoglobin, hematocrit, plasma inorganic phosphate and ammonia levels were measured before and after exercise. Mean power output (in W and W/kg) was significantly lower in females than in males but that difference disappeared when power output was related to LBM. Mean exercise-induced change in blood lactate concentration, as well as post-exercise plasma inorganic phosphate and ammonia levels were markedly lower in female than in the male rowers. Mean power output relative to total or lean body mass was significantly correlated with the post-exercise concentration of blood lactate or the exercise-induced change in blood lactate level in males but not in females. Post-exercise blood lactate and plasma ammonia concentrations were significantly correlated in male but not in female junior rowers. The results of the present study indicated that female and male rowers attained similar mean power output per kg of lean body mass during the all-out simulated 2 km rowing which required a higher engagement of anaerobic processes in male athletes compared with the female ones. Verf.-Referat