Table 6.

Relationship between changes in physical fitness/physique indices and changes in bone mineral density over 4 years (girls, N = 152).

Objective variable	Explanatory variable	B	Standard error	β	p	Adjusted R2
OSI	Change in height	− 0.033	0.013	− 0.458	0.013	0.172
	Change in % fat	0.002	0.007	0.022	0.804
	Change in % muscle	0.069	0.023	0.510	0.003
	Change in grip strength	0.011	0.0011	0.099	0.303

Multiple regression analysis.

Adjusted by values at 10/11-year-olds (fifth-grade elementary school students).

B, partial regression coefficient; β, standard partial regression coefficient; p, probability value; BMD, bone mineral density; N, Number of participants; OSI, osteo-sono assessment index; % fat, body fat ratio; % muscle, body muscle ratio.