Reliability of Lower Extremity Muscle Power and Functional Performance in Healthy, Older Women

Table 5

Reliability data for muscle torque (Nm) and muscle power (W) for time points 1 and 2 (weeks 0–9; n = 17), 2 and 3 (weeks 9–15; n = 13), and 1 and 3 (weeks 0–15; n = 14).

	CVTE			ICC (CI); value
	1 and 2	2 and 3	1 and 3	1 and 2	2 and 3	1 and 3
KET (Nm)	9.5	8.0; (n = 14)	10.1; (n = 15)	0.96 (0.89–0.99); <0.001	0.97 (0.89–0.99); <0.001	0.96 (0.87–0.99); <0.001
KEP (W)	5.7	6.1	6.6	0.97 (0.92–0.99); <0.001	0.97 (0.90–0.99); <0.001	0.96 (0.88–0.99); <0.001
KFP (W)	9.7	6.7	10.5	0.93 (0.80–0.97); <0.001	0.97 (0.90–0.99); <0.001	0.90 (0.68–0.97); <0.001
PFP (W)	9.9	14.0	15.2	0.96 (0.89–0.99); <0.001	0.92 (0.74–0.98); <0.001	0.91 (0.72–0.97); <0.001
DFP (W)	15.9	20.0	14.8	0.92 (0.77–0.97); <0.001	0.83 (0.47–0.95); 0.002	0.88 (0.62–0.96); <0.001

^aCV_TE: coefficient of variation of the typical error (%); ICC: intraclass correlation coefficient; CI: 95% confidence interval; KET: isometric knee extension torque; KEP: knee extension power; KFP: knee flexion power; PFP: plantar flexion power; DFP: dorsiflexion power. All ICCs were significant; .