Table 4.
Relationship between handgrip strength and BMD in boys (n = 171)
| Handgrip Strength | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Unadjusted | Adjusted for age and PHV | Adjusted for PLM and PFM | |||||||
| β | CI (95%) | P-value | β | CI (95%) | P-value | β | CI (95%) | P-value | |
| Boys | |||||||||
| BMD Arms (g/cm2) | 0.007 | 0.006; 0.008 | ≤0.001* | 0.005 | 0.003; 0.006 | ≤0.001* | 0.006 | 0.004; 0.007 | ≤0.001* |
| BMD Legs (g/cm2) | 0.019 | 0.017; 0.021 | ≤0.001* | 0.009 | 0.006; 0.013 | ≤0.001* | 0.017 | 0.014; 0.020 | ≤0.001* |
| BMD Pelvis (g/cm2) | 0.016 | 0.014; 0.019 | ≤0.001* | 0.010 | 0.006; 0.013 | ≤0.001* | 0.014 | 0.011; 0.017 | ≤0.001* |
| BMD Trunk (g/cm2) | 0.010 | 0.009; 0.012 | ≤0.001* | 0.007 | 0.005; 0.010 | ≤0.001* | 0.009 | 0.007; 0.010 | ≤0.001* |
| BMD Spine (g/cm2) | 0.010 | 0.008; 0.012 | ≤0.001* | 0.009 | 0.006; 0.013 | ≤0.001* | 0.008 | 0.006; 0.010 | ≤0.001* |
| BMD Total (g/cm2) | 0.010 | 0.008; 0.011 | ≤0.001* | 0.006 | 0.003; 0.008 | ≤0.001* | 0.007 | 0.005; 0.010 | ≤0.001* |
PLST percentage lean soft tissue, PFM percentage fat mass, PHV years from peak height velocity, CI confidence interval, BMD bone mineral density. Variance Inflation Factor values for collinearity statistics: Handgrip Strength = 2.577; Age = 6.290; PHV = 3.882; PLST = 2.505; PFM = 2.697. * p < 0.05