Table 5.

Model summary parameters of hierarchical linear regression analysis explaining physical activity level (UCLA score) with sex, peak hip flexion moment, gait speed, and fear (TSK) in adults with knee OA (n = 40).

Dependent variable	Model 1 Independent variables	Standardized beta	t	P	sr2
UCLA scoreT	Step 1
	Sex	0.374	2.49	0.017	0.140
	Step 2
	Sex	0.373	2.92	0.006	0.139
	Peak Hip FLX moment	0.018	0.093	0.927	0.000
	GS	0.503	2.65	0.012	0.115
	Step 3
	Sex	0.260	2.34	0.025	0.064
	Peak Hip FLX moment	−0.003	−0.017	0.987	0.000
	GS	0.364	2.24	0.032	0.058
	TSK	−0.476	−4.05	< 0.001	0.189

Note.

^TLog transformed. Sex, male = 1. Statistically significant values are in bold.

Abbreviations: FLX, flexion; GS, self-selected gait speed; TSK, Tampa Scale for Kinesiophobia; sr², squared semi-parial correlation.