10 km running performance predicted by a multiple linear regression model with allometrically adjusted variables.
The aim of this study was to verify the power of VO2max, peak treadmill running velocity (PTV), and running economy (RE), unadjusted or allometrically adjusted, in predicting 10 km running performance. Eighteen male endurance runners performed: 1) an incremental test to exhaustion to determine VO2maxand PTV; 2) a constant submaximal run at 12 km·h-1on an outdoor track for RE determination; and 3) a 10 km running race. Unadjusted (VO2max, PTV and RE) and adjusted variables (VO2max0.72, PTV0.72and RE0.60) were investigated through independent multiple regression models to predict 10 km running race time. There were no significant correlations between 10 km running time and either the adjusted or unadjusted VO2max. Significant correlations (p < 0.01) were found between 10 km running time and adjusted and unadjusted RE and PTV, providing models with effect size > 0.84 and power > 0.88. The allometrically adjusted predictive model was composed of PTV0.72and RE0.60and explained 83% of the variance in 10 km running time with a standard error of the estimate (SEE) of 1.5 min. The unadjusted model composed of a single PVT accounted for 72% of the variance in 10 km running time (SEE of 1.9 min). Both regression models provided powerful estimates of 10 km running time; however, the unadjusted PTV may provide an uncomplicated estimation.
Department of Physical Education, Senac University Centre, São Paulo, Brazil.
Cesar C C
CC
Abad
School of Physical Education and Sport, University of São Paulo, Brazil.
Ronaldo V
RV
Barros
School of Physical Education and Sport, University of São Paulo, Brazil.
Romulo
R
Bertuzzi
School of Physical Education and Sport, University of São Paulo, Brazil.
João F L
JF
Gagliardi
Sports Science Research Group, Department of Physical Education and Sports Science CAV, Federal University of Pernambuco, Brazil.
Adriano E
AE
Lima-Silva
Division of Exercise Science and Sports Medicine (ESSM), Department of Human Biology, Faculty of Health Sciences, University of Cape Town, South Africa.
Mike I
MI
Lambert
Exercise Psychophysiology Research Group, School of Arts, Sciences and Humanities, University of São Paulo, Brazil.
Flavio O
FO
Pires
VO2max; allometry; peak of treadmill velocity; running economy