Table 4: Multivariable stepwise regression models for core muscular endurance displaying significant independent variables.

LabelCoefficientSE Partial Model

Model 1: body mass index
 Intercept324.4941.92<0.001
 Body mass index (kg/m2)−8.621.55<0.0010.220.22
 Age (y)1.640.610.0090.070.29

Model 2: body fat %
 Intercept173.2221.68<0.001
 Body fat (%)−4.360.68<0.0010.270.27
 Age (y)1.810.580.0030.080.34

Model 3: fat mass and fat-free mass
 Intercept158.4220.41<0.001
 Fat mass (kg)−3.710.55<0.0010.310.31
 Age (y)1.650.560.0040.070.37

SE: standard error.