Association between isokinetic strength measures and functional performance in community-dwelling older adults
DOI:
https://doi.org/10.1590/1809-2950/e22014323ptKeywords:
Muscle Strength, Activities of Daily Living, Walking Speed, Sitting PositionAbstract
Previous studies have shown an association
between lower limb muscle strength and functional
performance, but a dose-response relationship between the
strength of each lower limb muscle group and performance
in daily life activities in older adults has not been well
established. Thus, this study aimed to investigate the
association between isokinetic muscle strength of all eight
major lower limb muscle groups and functional performance
in community-dwelling older adults. The muscle strength of
the plantar flexors and dorsiflexors of the ankle, flexors and
extensors of the knee, and flexors, extensors, adductors, and
abductors of the hip were evaluated using a Biodex System
4 Pro® isokinetic dynamometer. Functional performance was
evaluated in 109 participants using the five-times sit-tostand test (STS) and 4-meter usual walking speed (UWS).
The multiple linear regression analyses showed that the hip
abductors strength predicted 31.3% of the variability for
UWS (p=0.011), and the knee extensors strength (p=0.015)
predicted 31.6% of the variability for the STS. We conclude
that hip abductors and knee extensors could be the key
muscle groups involved in sit to stand and walking speed
performance in older adult
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Copyright (c) 2023 Cristiane de Almeida Nagata, Tânia Cristina Dias da Silva Hamu, Silvia Gonçalves Ricci Neri, Ricardo Moreno Lima, Patrícia Azevedo Garcia
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