Table 2—

Multiple linear regression analysis of plasma insulin concentration with reported past-year total physical activity (leisure and occupational) and physical fitness in nondiabetic men and women 18–79 years of age from the Sandy Lake Community

Dependent variable–insulin concentration* (in mmol/l)
Nonstandardized regression coefficientStandard errorP
Physical activity
 Men (n = 178)
  Age (years)0.0040.0030.192
  BMI (kg/m2)0.0640.0230.006
  Waist circumference (cm)0.0070.0090.455
  Total activity (MET-hour/week)−0.0390.0160.014
 Women (n = 217)
  Age (years)−0.0030.0020.248
  BMI (kg/m2)0.0170.0160.268
  Waist circumference (cm)0.0250.0080.002
  Total activity (MET-hour/week)0.0150.0150.288
Physical fitness
 Men (n = 142)
  Age (years)−0.0040.0050.442
  Percent body fat0.0360.0120.003
  Waist circumference (cm)0.0020.0090.838
  Vo2*−0.9640.3660.009
 Women (n = 152)
  Age (years)−0.0070.0050.189
  Percent body fat0.0180.0100.073
  Waist circumference (cm)0.0220.0080.005
  Vo2*−0.4190.3380.218
  • *

    * The logarithm of the variable was used in the model;

  • the square root of physical activity was used in the model.