Journal article
Test–retest reliability and variability of knee adduction moment peak, impulse and loading rate during walking
Gait & Posture, Vol.80, pp.113-116
2020
Abstract
Background:
Previous studies have reported good test-retest reliability for peak knee adduction moment (KAM) during walking. However, reliability of other KAM measurements has not been established.
Research question:
What is the test-retest reliability of peak KAM, KAM impulse, and KAM loading rate measurements during walking in knee-healthy individuals?
Methods:
Data from 32 knee-healthy participants were analysed in this test-retest reliability study. Various KAM measurements were reported for two sessions with kinematic and kinetic data obtained from a motion capture system synchronised with force plates, with a median of 1 week between sessions.
Results:
For all KAM measures, intra-class correlation coefficients were above 0.90 and their lower bound 95 % confidence limits exceeded 0.81. However, absolute measurement variability differed across measures, with normalized SEM (8 %–15 %), normalized MDC95 (20 %–40 %), intra-session MAD (10 %–18 %), and inter-session MAD (12 %–22 %) varying over a 2-fold range. Overall and first peak KAM, KAM impulse over 50 % stance, and KAM loading rate (15 frame window) showed ≤10 % and ≤15 % intra- and inter-session MAD, respectively.
Significance:
This study provided previously undefined test-retest reliability estimates for various KAM measures during walking. Researchers and clinicians should not assume that the various aspects of the KAM curve share similar reliability.
Details
- Title
- Test–retest reliability and variability of knee adduction moment peak, impulse and loading rate during walking
- Authors
- Hong Han Tan (Author) - Singapore General HospitalBenjamin Mentiplay (Author) - La Trobe UniversityJoshua Jia-En Quek (Author) - Singapore Institute of TechnologyAsher Chi Weng Tham (Author) - Singapore Institute of TechnologyLeon Zhi Xia Lim (Author) - Singapore Institute of TechnologyRoss Allan Clark (Author) - University of the Sunshine Coast, Queensland, School of Health and Sport Sciences - LegacyEe Lin Woon (Author) - Singapore General HospitalTing Ting Yeh (Author) - Singapore Institute of TechnologyCelia Ia Choo Tan (Author) - Singapore General HospitalYong-Hao Pua (Author) - Singapore General Hospital
- Publication details
- Gait & Posture, Vol.80, pp.113-116
- Publisher
- Elsevier BV
- DOI
- 10.1016/j.gaitpost.2020.05.029
- ISSN
- 1879-2219
- Organisation Unit
- School of Health and Behavioural Sciences - Legacy; School of Health and Sport Sciences - Legacy; University of the Sunshine Coast, Queensland; School of Health - Public Health
- Language
- English
- Record Identifier
- 99465007002621
- Output Type
- Journal article
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