A 3200-m time trial run was an accurate predictor of running velocities at lactate threshold and fixed blood lactate concentrations in untrained women, with correlations ranging from r=0.70 to 0.95.
Observational (n=39)
Does a 3200-m time trial run accurately predict VO2 and running velocity at lactate threshold and fixed blood lactate concentrations in untrained females?
A 3200-m time trial run can accurately predict running velocities at lactate threshold and fixed blood lactate concentrations in untrained females.
Effect estimate: r = 0.70 to 0.95
The present study examined the effectiveness of a 3200-m time trial run for predicting VO2 and running velocity at lactate threshold (LT), and fixed blood lactate concentrations (FBLC) of 2.0, 2.5, and 4.0 mM and peak in untrained women. Thirty-nine female subjects completed a VO2peak/LT test a 3200-m time trial run. Twenty-eight subjects were randomly assigned to a validation sample and the remaining subjects were used for cross-validation purposes. In the validation sample, VO2 measurements at LT, FBLC of 2.0, 2.5, 4.0 mM, and peak were 22.5, 29.2, 31.2, 36.5, and 38.5 ml/kg.min-1, respectively. Velocities at LT, FBLC of 2.0, 2.5, 4.0 mM, and peak were 107.1, 129.7, 136.6, 155.1, and 163.2 m/min, respectively. Regression analysis in the validation group revealed that the 3200-m time trial was an accurate predictor of velocities at LT, FBLC of 2.0, 2.5, 4.0 mM, and peak with correlations of r = 0.70, r = 0.84, r = 0.85, r = 0.87, and r = 0.95, respectively, and standard errors of estimate ranging from +/- 9.5 m/min (for velocity peak) to +/- 13.7 m/min (velocity LT). Vor VO2 prediction, correlations ranged from r = 0.61 (3200-m time vs VO2 LT) to r = 0.77 (3200-m time vs VO2 peak) with the standard errors of estimate ranging from +/- 4.18 (VO2 2.0 mM) to +/- 4.87 ml/kg.min-1 (VO2 4.0 mM).(ABSTRACT TRUNCATED AT 250 WORDS)
Weltman et al. (1989) conducted an observational in Untrained (n=39). 3200-m time trial run vs. Laboratory VO2peak/LT test was evaluated on Velocities at lactate threshold, fixed blood lactate concentrations of 2.0, 2.5, 4.0 mM, and peak (r = 0.70 to 0.95). A 3200-m time trial run was an accurate predictor of running velocities at lactate threshold and fixed blood lactate concentrations in untrained women, with correlations ranging from r=0.70 to 0.95.