Health Practices That Predict Recovery from
Functional Limitations in Older Adults
Yunhwan Lee, MD, DrPH, Kyung-hye Park, MA
Background: Although previous studies show the benefits of certain health behaviors in reducing
physical disability in older people, their effects on functional limitation, an antecedent of
disability, are not well established. This study aims to identify health behavioral practices
that affect recovery from functional limitations in older adults.
Methods: A total of 312 community-dwelling adults aged 65 and older with functional limitations
were examined in 2002 for functional recovery in 2003. Functional limitations were
measured by self-reports of difficulty performing upper- and lower-body movements.
Positive health practices included regular physical activity, normal body mass index (BMI),
periodic medical checkups, and moderate alcohol consumption. Logistic regression
models were fitted to identify individual as well as combined health practices that predict
functional recovery, adjusting for sociodemographic and health-related covariates.
Results: Although each of the positive health practices was significantly associated with functional
recovery in the bivariate analyses, only physical activity continued to be a strong indepen-
dent predictor in the multivariate analysis. The likelihood of functional recovery tended to
increase with the number of health practices adopted by the elderly. Physical activity, in
combination with normal BMI, proved to be one of the most influential health practice
profiles, resulting in a high percentage of functional recovery.
Conclusions: Health behaviors, especially physical activity, contribute to an older person’s functional
independence. The benefit of an increased number of health practices on recovery from
functional limitations suggests that targeting multiple behavioral risks may help delay the
onset of disability in later life.
(Am J Prev Med 2006;31(1):25–31) © 2006 American Journal of Preventive Medicine
Introduction
A
ccumulating evidence on the dynamic nature
of the disability process suggests that recovery
from physical disability by older adults is not an
uncommon event. In longitudinal studies of physical
function,
1–5
up to 81% of the disabled elderly has been
reported to regain independence. These results indi-
cate that the reversal of disability as a goal in healthy
aging may be both feasible and attainable.
Most studies, however, have focused on the endpoint
of the disablement process, that is, disability as defined
by measures of activities of daily living (ADL). Func-
tional limitation, an intermediate outcome in the path-
way from disease to disability,
6
has received relatively
less attention. Functional limitation is a valid indicator
of the physical functional status of older people as well
as a strong predictor of incident disability.
7
It is thus
vital to consider functional limitation in interventions
aimed at disability prevention.
8
Improvements in func-
tional limitation have been noted in previous stud-
ies,
3,4,9 –11
signifying its relevance to the reversibility of
the disabling process.
In understanding the factors associated with func-
tional recovery, it is important to consider the complex
interplay of multiple factors affecting the disablement
process as described in the International Classification
of Functioning, Disability and Health (ICF) con-
struct.
12
Among the diverse environmental and per-
sonal factors affecting functioning, age,
13–15
socioeco-
nomic status,
10
baseline functional status,
3,5,10,13–15
and
chronic conditions
3,10,11
have been observed to predict
functional recovery in older adults. This study focuses
on health-related behaviors that are more amenable to
intervention and change, controlling for other contex-
tual factors. Several studies suggest that health behav-
iors may play an independent role in recovery from
disability. Physical activity
14
and maintenance of nor-
mal weight
13,15
were significantly associated with recov-
ery from ADL disability in older adults. Reductions in
disability levels have been reported among nonsmok-
ers, moderate drinkers, and those having regular health
checkups.
16 –18
The role of health behaviors in the
From the Department of Preventive Medicine & Public Health, Ajou
University School of Medicine, Suwon, South Korea
Address correspondence and reprint requests to: Yunhwan Lee,
San 5, Wonchun-dong, Youngtong-gu, Suwon 443-721, Republic of
Korea. E-mail: yhlee@ajou.ac.kr.
25 Am J Prev Med 2006;31(1) 0749-3797/06/$–see front matter
© 2006 American Journal of Preventive Medicine • Published by Elsevier Inc. doi:10.1016/j.amepre.2006.03.018