期刊
AGE AND AGEING
卷 38, 期 4, 页码 435-440出版社
OXFORD UNIV PRESS
DOI: 10.1093/ageing/afp066
关键词
older people; fear of falling; gait; balance; dual task; elderly
Methods: we examined FoF in 100 participants aged >= 75 years, using the Activities-specific Balance Confidence scale. Participants with a mean score < 67% were assigned to the FoF group. We quantified gait and balance during walking at the preferred velocity with and without a cognitive dual task (arithmetic task and verbal fluency), using an electronic walkway (Gaitrite (R)) and a trunk accelerometer (SwayStar (R)). Primary outcome measures were gait velocity, stride-length and stride-time variability, as well as mediolateral angular displacement and velocity. Results: gait velocity was significantly lower (P < 0.05) and stride-length and stride-time variability were significantly higher (P < 0.05) in the FoF group. However, after standardisation for gait velocity, differences became non-significant. Mediolateral angular displacement and velocity were not associated with FoF. We found no difference between the FoF and no-FoF group with respect to the dual-task effect on gait and balance variables. Conclusions: the lower gait velocity in the FoF group may be a useful adaptation to optimise balance, rather than a sign of decreased balance control. The ability to attend to a secondary task during walking is not influenced by FoF.
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