Minimal Detectable Change in Quadriceps Strength and Voluntary Muscle Activation in Patients With Knee Osteoarthritis  Crystal O. Kean, PhD, Trevor B.

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Minimal Detectable Change in Quadriceps Strength and Voluntary Muscle Activation in Patients With Knee Osteoarthritis  Crystal O. Kean, PhD, Trevor B. Birmingham, PhD, PT, S. Jayne Garland, PhD, PT, Dianne M. Bryant, PhD, J. Robert Giffin, MD, FRCS(C)  Archives of Physical Medicine and Rehabilitation  Volume 91, Issue 9, Pages 1447-1451 (September 2010) DOI: 10.1016/j.apmr.2010.06.002 Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions

Fig 1 Example of the torque profile for 1 participant. The dashed lines indicate when the stimulus was applied. The interpolated twitch (a) and resting twitch torques (b) are marked with arrows. Archives of Physical Medicine and Rehabilitation 2010 91, 1447-1451DOI: (10.1016/j.apmr.2010.06.002) Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions

Fig 2 Bland and Altman28 plots depicting the difference between day 1 and day 2 versus the mean of day 1 and day 2 for (A) isokinetic strength (Nm), (B) isometric strength (Nm), and (C) percent of voluntary activation (%). Archives of Physical Medicine and Rehabilitation 2010 91, 1447-1451DOI: (10.1016/j.apmr.2010.06.002) Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions