TY - JOUR
T1 - Relating wrist accelerometry measures to disability in older adults
AU - Huisingh-Scheetz, Megan J.
AU - Kocherginsky, Masha
AU - Magett, Elizabeth
AU - Rush, Patricia
AU - Dale, William
AU - Waite, Linda
N1 - Funding Information:
This work was supported by the John A. Hartford Foundation and the National Institutes of Health including the National Institute on Aging, the Division of Behavioral and Social Sciences Research for the National Health, Social Life, and Aging Project (NSHAP) (grant numbers R01 AG021487, R37 AG030481), and the NSHAP Wave 2 Partner Project (R01 AG033903), and by NORC, which was responsible for the data collection.
Funding Information:
The National Social Life, Health and Aging Project is supported by the National Institute on Aging and the National Institutes of Health (R37AG030481; R01AG033903). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
Funding Information:
Huisingh-Scheetz received funding through the John A. Hartford Foundation Center of Excellence in Geriatric Medicine and Training National Program Award to support her career development.
Publisher Copyright:
© 2015 Elsevier Ireland Ltd.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Objective: This analysis assessed the extent to which: (1) wrist accelerometer measures were associated with difficulty performing specific activities of daily living and instrumental activities of daily living and (2) these measures contributed important information about disability beyond a typical self-reported vigorous activity frequency question. Methods: We used data from the National Social Life, Health and Aging Project (NSHAP) accelerometry sub-study (. n=. 738). Activity was assessed using two wrist-accelerometer measures assessed over 3 days (routine activity expressed as mean count/15. s epoch during wake time, and immobile time expressed as the proportion of wake time spent immobile), and self-reported average vigorous activity frequency. The association between routine activity, immobile time and difficulty performing fourteen activities of daily living (ADLs) and instrumental activities of daily living (IADLs) plus two summary measures (any ADL or IADL difficulty), was assessed using logistic regression models, with and without controlling for self-reported vigorous activity. Results: Self-reported activity was mildly correlated with routine activity (. r=. 0.27) and immobile time (. r=. -0.21). Routine activity, immobile time, and self-reported vigorous activity were significantly associated with twelve, ten, and fourteen disability measures, respectively. After controlling for self-reported activity, significant associations remained between routine activity and eight disabilities, and immobile time and six disabilities. Conclusion: Wrist accelerometry measures were associated with many ADL and IADL disabilities among older adults. Wrist acclerometry in older adults may be useful to help assess disability risks and set individualized physical activity targets.
AB - Objective: This analysis assessed the extent to which: (1) wrist accelerometer measures were associated with difficulty performing specific activities of daily living and instrumental activities of daily living and (2) these measures contributed important information about disability beyond a typical self-reported vigorous activity frequency question. Methods: We used data from the National Social Life, Health and Aging Project (NSHAP) accelerometry sub-study (. n=. 738). Activity was assessed using two wrist-accelerometer measures assessed over 3 days (routine activity expressed as mean count/15. s epoch during wake time, and immobile time expressed as the proportion of wake time spent immobile), and self-reported average vigorous activity frequency. The association between routine activity, immobile time and difficulty performing fourteen activities of daily living (ADLs) and instrumental activities of daily living (IADLs) plus two summary measures (any ADL or IADL difficulty), was assessed using logistic regression models, with and without controlling for self-reported vigorous activity. Results: Self-reported activity was mildly correlated with routine activity (. r=. 0.27) and immobile time (. r=. -0.21). Routine activity, immobile time, and self-reported vigorous activity were significantly associated with twelve, ten, and fourteen disability measures, respectively. After controlling for self-reported activity, significant associations remained between routine activity and eight disabilities, and immobile time and six disabilities. Conclusion: Wrist accelerometry measures were associated with many ADL and IADL disabilities among older adults. Wrist acclerometry in older adults may be useful to help assess disability risks and set individualized physical activity targets.
KW - Accelerometry
KW - Disability
KW - Frail older adult
KW - Motor activity
KW - Self report
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U2 - 10.1016/j.archger.2015.09.004
DO - 10.1016/j.archger.2015.09.004
M3 - Article
C2 - 26452423
AN - SCOPUS:84952907012
VL - 62
SP - 68
EP - 74
JO - Archives of Gerontology and Geriatrics
JF - Archives of Gerontology and Geriatrics
SN - 0167-4943
ER -