TY - JOUR
T1 - What physical attributes underlie self-reported vs. observed ability to walk 400 m in later life?
T2 - An analysis from the InCHIANTI study
AU - Beauchamp, Marla K.
AU - Leveille, Suzanne G.
AU - Patel, Kushang V.
AU - Kiely, Dan K.
AU - Phillips, Caroline L.
AU - Bandinelli, Stefania
AU - Ferrucci, Luigi
AU - Guralnik, Jack
AU - Bean, Jonathan F.
PY - 2014
Y1 - 2014
N2 - Objective: The aims of this study were to evaluate and contrast the physical attributes that are associated with self-reported vs. observed ability to walk 400 m among older adults. Design: Analysis of baseline and 3-yr data from 1026 participants 65 yrs or older in the InCHIANTI (Invecchiare in Chianti) study was conducted. Observed and self-reported ability to walk 400 m at baseline and at 3 yrs were primary outcomes. Predictors included leg speed, leg strength, leg strength symmetry, range of motion, balance, and kyphosis. Results: Balance, leg speed, leg strength, kyphosis, leg strength symmetry, and knee range of motion were associated with self-reported ability to walk 400 m at baseline (P <0.001, c = 0.85). Balance, leg speed, and knee range of motion were associated with observed 400-m walk (P <0.001, c = 0.85) at baseline. Prospectively, baseline leg speed and leg strength were predictive of both self-reported (P <0.001, c = 0.79) and observed (P <0.001, c = 0.72) ability to walk 400 m at 3 yrs. Conclusions: The profiles of attributes that are associated with self-reported vs. observed walking ability differ. The factor most consistently associated with current and future walking ability is leg speed. These results draw attention to important foci for rehabilitation.
AB - Objective: The aims of this study were to evaluate and contrast the physical attributes that are associated with self-reported vs. observed ability to walk 400 m among older adults. Design: Analysis of baseline and 3-yr data from 1026 participants 65 yrs or older in the InCHIANTI (Invecchiare in Chianti) study was conducted. Observed and self-reported ability to walk 400 m at baseline and at 3 yrs were primary outcomes. Predictors included leg speed, leg strength, leg strength symmetry, range of motion, balance, and kyphosis. Results: Balance, leg speed, leg strength, kyphosis, leg strength symmetry, and knee range of motion were associated with self-reported ability to walk 400 m at baseline (P <0.001, c = 0.85). Balance, leg speed, and knee range of motion were associated with observed 400-m walk (P <0.001, c = 0.85) at baseline. Prospectively, baseline leg speed and leg strength were predictive of both self-reported (P <0.001, c = 0.79) and observed (P <0.001, c = 0.72) ability to walk 400 m at 3 yrs. Conclusions: The profiles of attributes that are associated with self-reported vs. observed walking ability differ. The factor most consistently associated with current and future walking ability is leg speed. These results draw attention to important foci for rehabilitation.
KW - Mobility Limitation
KW - Physical Performance
KW - Rehabilitation
KW - Successful Aging
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U2 - 10.1097/PHM.0000000000000034
DO - 10.1097/PHM.0000000000000034
M3 - Article
C2 - 24322434
AN - SCOPUS:84899649960
SN - 0894-9115
VL - 93
SP - 396
EP - 404
JO - American Journal of Physical Medicine and Rehabilitation
JF - American Journal of Physical Medicine and Rehabilitation
IS - 5
ER -