. 2020 May 22;12(5):431–440. doi: 10.1177/1941738120913645

Table 3.

Linear regression coefficients for the influence of physical fitness on tibial values^a

		Tot.BMC	Tot.Area	Tot.vBMD	Crt.Thick	Crt.BMC	Crt.Area	Crt.vBMD	SSIPOL	Frac_X
Model 1	r ^2 b	0.550^*	0.477^*	0.067^*	0.434^*	0.539^*	0.536^*	0.031	0.502^*	0.542^*
	Rel_handgrip (B)	0.414^*	57.20^*	−20.58	0.565^*	0.366^*	37.65^*	−35.96	186.30^*	371.91^*
	Change r²	0.037^*	0.044^*	0.002	0.022^*	0.033^*	0.038^*	0.007	0.042^*	0.037^*
	Total r²	0.587	0.522	0.068	0.455	0.573	0.574	0.038	0.544	0.570
	Standing long jump (B)	0.003^*	0.366^*	−0.054	0.005^*	0.002^*	0.271^*	−0.373	1.016^*	2.427^*
	Change r²	0.043^*	0.048^*	<0.001	0.039^*	0.040^*	0.052^*	0.019	0.033^*	0.042^*
	Total r²	0.592	0.525	0.067	0.473	0.579	0.588	0.050	0.534	0.583
	4 × 10-m, s (B)	−0.035^*	−3.388^*	−6.803	−0.071^*	−0.033^*	−3.189^*	0.702	−11.15^*	−25.05^*
Model 2	Change r²	0.058^*	0.033^*	0.036	0.072^*	0.057^*	0.058^*	0.001	0.032^*	0.036^*
	Total r²	0.608	0.511	0.102	0.506	0.597	0.594	0.032	0.534	0.578
	Balance, s (B)	<0.001	0.063	−0.270	−0.001	−0.001	<0.001	−0.498	0.208	0.157
	Change r²	0.001	0.001	0.003	0.001	0.001	<0.001	0.016	0.001	<0.001
	Total r²	0.551	0.478	0.070	0.435	0.540	0.536	0.047	0.709	0.542
	Laps, s (B)	0.001	0.085	−0.067	<0.001	0.001	0.041	0.211	0.279	0.441
	Change r²	0.001	0.002	<0.001	<0.001	0.002	0.001	0.004	0.001	0.001
	Total r²	0.551	0.479	0.067	0.434	0.542	0.537	0.035	0.503	0.542

Crt.Area, cortical area; Crt.BMC, cortical bone mineral content; Crt.Thick, cortical thickness; Crt.vBMD, cortical volumetric bone mineral density; Frac_X, fracture load in the x-axis; SSIPOL, polar strength strain index; Tot.Area, total area; Tot.BMC, total bone mineral content; Tot.vBMD, total volumetric bone mineral density.

Unstandarized Beta (B) coefficients and r² for each of the fitness predictors adjusted by age and sex.

From the age and sex prediction model.

P < 0.05 for the included fitness variable.