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Table 2 Measures collected in the trial

From: The effects of hip muscle strengthening on knee load, pain, and function in people with knee osteoarthritis: a protocol for a randomised, single-blind controlled trial

Primary Outcome Measurement
Peak external knee adduction moment 3-D motion analysis and force plate system average of 5 walking trials at self-selected speed
Secondary Outcomes Measurement
Gait Analysis  
Peak external hip adduction moment 3-D motion analysis and force plate system average of 5 walking trials at self-selected speed
Peak pelvic obliquity and lateral trunk lean angle 3-D motion analysis and force plate system average of 5 walking trials at self-selected speed
Strength  
Isometric muscle strength of hip abductors, adductors, flexors, and rotators Hand held dynamometer
Isometric quadriceps muscle strength KinCom dynamometer
Symptoms  
Pain, stiffness and physical function in past 48 hours WOMAC Osteoarthritis Index – Likert version
Average pain over past week in standing, walking and overall 11 point horizontal numeric rating scale (end descriptors of 0 = no pain and 10 = worst pain possible)
Average restriction over past week in activities of daily living 11 point horizontal numeric rating scale (end descriptors of 0 = no restriction and 10 = maximum restriction)
Perceived rating of change for pain and for function over 12 week trial Ordinal scale (1-much worse, 2-slightly worse, 3-no change, 4-slightly better, 5-much better) at study completion
Function  
Standing balance Step test number of times can step foot up and down off 15 cm step in 15 secs
Overall function Timed stair ascent and descent
Other Measures Measurement
Physical activity levels Physical Activity Scale for the Elderly (PASE)
Compliance (exercise group only) Number of physiotherapy visits Completion of home exercises via log-book
Adverse effects Log-book and open probe questioning