Beden Eğitimi ve Spor Portalı - Runnıng speed development by non-specıfıc methods to athletes

RUNNING SPEED DEVELOPMENT BY NON-SPECIFIC METHODS TO ATHLETES GIRLS OF 12 YEARS OLD

In relation to the duration of all-out running, these speed decrements are not uniform.
Speed decreases markedly with increases in the duration of
shorter efforts (i.e., _180 s) but only modestly with the same relative increases in the duration of longer ones.
Accordingly, top sprinters attain race speeds nearly twice as fast as those achieved by the best milers, but mile runners race only moderately faster than marathon runners do.
The negative exponential relationship between all-out speed and run duration is generally attributed to differences in the metabolic power available from anaerobic vs. aerobic sources in relation to time (M. W. Bundle, R. W. Hoyt and P. G. Weyand, 2003). Specifically, peak rates of anaerobic energy release, which fuel brief maximal efforts, decline rapidly as the duration of the trial increases.