One leg testing in hip and knee osteoarthritis: A comparison with a two-leg oriented functional outcome measure and self-reported functional measures
Authors' conclusion
The unilateral maximal step-up test seems more responsive to change in physical function compared to the bilateral 30-second chair-stand test, although the tests did not differ statistically in effect size.
Study context
- Population
- Participants with clinically verified hip or knee OA reporting <150 minutes/week of moderate or vigorous physical activity; mean age 61.3 years (8.3)
- Participants
- 111 participants
- Comparison
- Unilateral one-leg rise test and maximal step-up test vs bilateral 30-second chair-stand test and self-reported physical function (HOOS/KOOS)
- Outcome
- Responsiveness (Cohen's standardised mean difference effect size), baseline to 12 months after a physical activity intervention
- Follow-up
- 12 months
Main finding
As reported in the abstract
Responsiveness, effect size (Cohen's standardised mean difference) · baseline to 12 months
Maximal step-up test
0.57
effect size · 95% CI 0.37–0.77
30-second chair-stand
0.48
effect size · 95% CI 0.29–0.68
One-leg rise test
0.12
effect size · 95% CI 0.60–0.31
Further findings
Floor effect, one-leg rise test (participants scoring zero)
- Baseline
- 72%
- 12 months
- 63%
Correlation between performance-based tests and questionnaires
- R (considered minor)
- 0.188 to 0.226
- p
- P = 0.018 to 0.048
Original publication
One leg testing in hip and knee osteoarthritis: A comparison with a two-leg oriented functional outcome measure and self-reported functional measures. Osteoarthritis Cartilage. Published 27 March 2024. doi:10.
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