Table 1.

Quadriceps Strength Measures Between Devices. Values are mean ± SD. Normalized values are in parentheses.

	Isokinetic Dynamometer	Hand-Held Dynamometer	Significance	Correlation Coefficient	Limits of Agreement for Bland-Altman Plots
Peak Torque	284.1 ± 95.5 Nm (3.57 ± 0.61 Nm/kg)	303.5 ± 118.2 Nm (3.81 ± 0.91 Nm*s−1kg)	p  =  .03*	r = .894	19.4 ± 53.2 Nm
RTD100	789.9 ± 442.6 Nm/s (9.62 ± 4.40 Nm*s−1/kg)	524.6 ± 391.8 Nm/s (6.38 ± 4.08 Nm*s−1kg)	T =  < .001*	r = .527	-265.2 ± 402.6 Nm/s
RTD250	832.8 ± 311.1 Nm/s (10.41 ± 2.43 Nm*s−1kg)	777.6 ± 354.7 Nm/s (9.71 ± 2.94 Nm*s−1kg)	p  =  .09	r = .839	-55.2 ± 190.7 Nm/s
RTDAvg	328.0 ± 122.4 Nm/s (4.17 ± 1.08 Nm*s−1/kg)	269.0 ± 209.7 Nm/s (3.37 ± 2.17 Nm*s−1kg)	T  =  .002*	r = .280	-59.0 ± 208.3 Nm/s

* HHD values were significantly different (P or T < .05) than isokinetic dynamometer.