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Purpose: The purpose of this study was to examine whether the running speed (vHRmax.pred) corresponding to a HRmax predicted by the formula [220-age (yrs)], is a useful physiologic index of endurance among trained young runners in a specified age group (12-20 yrs). Correlations were analyzed between vHRmax.pred and Vo2max, vVo2max (running speed corresponding to Vo2max,), vLT (running speed at a blood lactate level of 4 mmol·L−1), vHRmax.meas (running speed at the measured HRmax), and competitive 1500 and 3000-m performance times in 43 endurance-trained, teenaged runners (25 males, 18 females).Methods: Physiological variables (Vo2, HR, and La) were measured during progressive sub-maximal and maximal treadmill running. Running speeds corresponding to Vo2max, HRmax.meas, and HRmax.pred were estimated from regressions relating each individual's running speed to Vo2 and HR.Results: With a few exceptions, gender-specific correlation coefficients were significant between Vo2max, vVo2max, vLT, vHRmax.meas, and vHRmax.pred, with values ranging from 0.41 to 0.93 (p<0.05). vHRmax.pred was a significant predictor of running performance for both 1500 and 3000-m events (r=−0.62 and −0.52 in males, and −0.66 and −0.80 in females, respectively).Conclusion: The results suggested that vHRmax.pred is a useful predictor of endurance running performance in trained teenaged runners. This fact also suggested the possibility of developing an index of endurance running performance in untrained teenagers.

Running Speed at Predicted Maximal Heart Rate as an Assessment of Maximal Aerobic Capacity in Trained Teenaged Runners