Table 3.

Partial Correlation Coefficients of Associations Between Physical Activity and Bone Measures (n = 179 Boys and 189 Girls)

Total
Activity
(cts/min)
Vigorous
Activity
(min)
Compared
With
Peers
(1–5)
TV
Viewing
log (hr/d)
BMC-hip (g)
 Boys0.20*0.25*0.25*−0.01
 Girls0.25*0.28*0.22*−0.12
BMC-spine (g)
 Boys0.28*0.28*0.060.01
 Girls0.22*0.19*0.22*−0.11
BMC-total body
 Boys0.150.170.20*−0.01
 Girls0.080.060.11−0.14
BMD-hip (g/cm2)
 Boys0.150.18*0.19*−0.05
 Girls0.25*0.28*0.22*−0.15*
BMD-spine (g/cm2)
 Boys0.090.090.180.06
 Girls0.18*0.19*0.15−0.06
BMD-total body
(g/cm2)
 Boys0.110.100.070.04
 Girls0.080.060.11−0.14
Area total (cm2)
 Boys0.160.180.24*−0.02
 Girls0.20*0.22*0.26*−0.11
  • * Correlations significant at P < .01.

  • Correlations significant at P < .05.

    Note: All correlations adjusted for age, weight, and height. Area total = DXA-derived skeletal area.