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1. The purpose of this study was to compare the anaerobic performance of 11-12 year old prepubescent boys (stage 1; n= 18) using a maximal effort 90 s cycling test to that of adult men (n= 19). Performance was separated into short-term anaerobic power (SAP: work in 10 s), intermediate-term anaerobic capacity (IAC; work in 30s) and long-term anaerobic capacity (LAC; work in 90 s). Resistance on the Monark cycle ergometer was chosen as the highest tolerable load for the 90 s test and set at 2.6 and 3.81. rev1. kg body mass-'for boys and men. respectfvely. Power drop-off (% PD) was determined as the change in 5 s power outputs from 0-90 s. Blood lactates were measured at rest (pretest; BL) and at 2 (BLZ) and 5 (BL5) min post test. Absolute and relative (to weight or thigh volume) scores for SAC. IAC and LAC were 33-40% lower In the boys compared to the men (p< O. OOl). The men demonstrated significantly …