Article

OBJECTIVE: To examine the association of muscle strength and balance control with
the amount of time taken to perform sit-to-walk (STW) or turning components of
the Timed Up and Go (TUG) test in older adults. DESIGN: Correlations; multiple
regression models. SETTING: General community. PARTICIPANTS:
Older adults (N=60)
age >70 years recruited from the community. INTERVENTIONS:
Not applicable. MAIN OUTCOME MEASURES: Muscle strength, balance control, and TUG test performance
time. Muscle strength was quantified by peak joint moments during the isometric
maximal voluntary contraction test for bilateral hip abductors, knee extensors,
and ankle plantar flexors. Balance control was assessed with the Berg Balance
Scale, Fullerton Advanced Balance Scale, and center of mass and ankle inclination
angle derived during the TUG test performance. RESULTS: We found that balance
control measures were significantly associated with both STW and turning
durations even after controlling for muscle strength and other confounders (STW
duration: P<.001, turning duration: P=.001). Adding strength to the regression
model was found to significantly improve its prediction of STW duration (F change
=5.945, P=.018), but not turning duration (F change =1.03, P=.14). CONCLUSIONS:
Our findings suggest that poor balance control is an important factor that
contributes to longer STW and turning durations on the TUG test. Furthermore,
strength has a higher association with STW than turning duration.
CI - Copyright (c) 2016 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS