Premium
Longitudinal Analysis of Physical Performance, Functional Status, Physical Activity, and Mood in Relation to Executive Function in Older Adults Who Fall
Author(s) -
Best John R.,
Davis Jennifer C.,
LiuAmbrose Teresa
Publication year - 2015
Publication title -
journal of the american geriatrics society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.992
H-Index - 232
eISSN - 1532-5415
pISSN - 0002-8614
DOI - 10.1111/jgs.13444
Subject(s) - medicine , mood , activities of daily living , cognition , gerontology , longitudinal study , physical medicine and rehabilitation , cohort , prospective cohort study , psychological intervention , preferred walking speed , physical therapy , clinical psychology , psychiatry , pathology
Objectives To examine whether good executive function ( EF ; the cognitive processes important for goal‐oriented and controlled behavior) at baseline and maintenance of EF over time predict maintenance of physical performance, functional status, physical activity, and mood over a 1‐year period, and conversely, to examine whether baseline functioning in these noncognitive domains predicts maintenance of EF over the same period of time. Design 12‐month prospective cohort study. Setting Vancouver Falls Prevention Clinic. Participants Community‐dwelling older adults (N = 199; mean age 81.6 ± 6.5; 63% female) referred to the clinic after a fall. Measurments At each time point, structural equation modeling created a latent EF variable from performance on five EF tasks. Physical performance (physiological falls risk and gait speed), instrumental activities of daily living ( IADL s), physical activity, and depressive symptoms were also assessed at each time point. Results Higher baseline EF predicted decreases in depressive symptoms ( P = .005) and maintenance of IADL s ( P = .006) from baseline to follow‐up. Improvements in EF correlated with increases in gait speed ( P = .005) and physical activity ( P = .03) and with the maintenance of IADL s ( P = .002) over follow‐up. All effects were independent of demographic characteristics and global cognitive function. Baseline performance in the noncognitive domains did not predict changes in EF . Conclusion In older fallers, EF is a marker of resiliency in several noncognitive domains and should therefore be assessed. Furthermore, interventions to improve EF should be tested in older fallers with EF deficits.