Validity of linear encoder measurement of sit-to-stand performance power in older people

Physiotherapy
Ulrich LindemannClemens Becker

Abstract

To investigate construct validity of linear encoder measurement of sit-to-stand performance power in older people by showing associations with relevant functional performance and physiological parameters. Cross-sectional study. Movement laboratory of a geriatric rehabilitation clinic. Eighty-eight community-dwelling, cognitively unimpaired older women (mean age 78 years). Sit-to-stand performance power and leg power were assessed using a linear encoder and the Nottingham Power Rig, respectively. Gait speed was measured on an instrumented walkway. Maximum quadriceps and hand grip strength were assessed using dynamometers. Mid-thigh muscle cross-sectional area of both legs was measured using magnetic resonance imaging. Associations of sit-to-stand performance power with power assessed by the Nottingham Power Rig, maximum gait speed and muscle cross-sectional area were r=0.646, r=0.536 and r=0.514, respectively. A linear regression model explained 50% of the variance in sit-to-stand performance power including muscle cross-sectional area (p=0.001), maximum gait speed (p=0.002), and power assessed by the Nottingham Power Rig (p=0.006). Construct validity of linear encoder measurement of sit-to-stand power was shown at functional le...Continue Reading

References

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Citations

Nov 13, 2015·Aging Clinical and Experimental Research·Ulrich LindemannClemens Becker
Jun 18, 2016·PloS One·Ulrich LindemannClemens Becker
Mar 17, 2016·Clinical Rehabilitation·Ulrich LindemannClemens Becker
Dec 7, 2019·Journal of Aging and Physical Activity·Jennifer J SherwoodJenny O
Dec 22, 2020·Experimental Gerontology·Anoop T BalachandranJordan McKenzie Glenn
Dec 29, 2020·Journal of Aging and Physical Activity·Cristian JaqueJorge Cancino

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