Substrate utilization during treadmill running in prepubertal girls and women

摘要: MARTINEZ, L. R. and E. M. HAYMES. Substrate utilization during treadmill running in prepubertal girls women. Med. Sci. Sports Exerc., Vol. 24, No. 9, pp. 975–983, 1992. Ten (9.1 yr) 10 women (24.4 were studied 30-min runs at the same relative (70% VO2max) (RI) absolute (7.2 km·h-1) (AI) intensities. Oxygen consumption respiratory exchange ratio (RER) monitored continuously exercise test. Venous blood samples obtained before immediately after analyzed for glucose, lactate, FFA, glycerol. During RI, RER was significantly (P < 0.05) lower compared with In addition, decreased while change did not reach significance Lactate concentration increased tests, this increase being greater than but AI. FFA glycerol concentrations higher tests both groups. Glucose either group. Prepubertal rely more on fat less carbohydrate metabolism of moderately heavy intensity.