Changes in Objectively Measured Physical Activity Are Associated With Perceived Physical and Mental Fatigability in Older Men

Lower physical activity (PA) is associated with greater perceived fatigability, a person-centered outcome. The association between change in PA and fatigability with advanced age has yet to be established. Community-dwelling older men (N = 1 113, age = 84.1 ± 3.9 years at Year 14) had free-living PA...

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Published in:The journals of gerontology. Series A, Biological sciences and medical sciences Biological sciences and medical sciences, 2022-12, Vol.77 (12), p.2507-2516
Main Authors: Qiao, Yujia Susanna, Moored, Kyle D, Boudreau, Robert M, Roe, Lauren S, Cawthon, Peggy M, Stone, Katie L, Cauley, Jane A, Glynn, Nancy W
Format: Article
Language:English
Subjects:
Accelerometry
Aged
Aged, 80 and over
Exercise
Exercise physiology
Fatigue
Fractures, Bone
Gerontology
Humans
Light intensity
Male
Men
Older people
Osteoporosis
Physical activity
Sedentary Behavior
Sleep
THE JOURNAL OF GERONTOLOGY: Medical Sciences
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Summary:Lower physical activity (PA) is associated with greater perceived fatigability, a person-centered outcome. The association between change in PA and fatigability with advanced age has yet to be established. Community-dwelling older men (N = 1 113, age = 84.1 ± 3.9 years at Year 14) had free-living PA assessed using SenseWear Armband prospectively at Year 7 (2007-2009) and Year 14 (2014-2016) of Osteoporotic Fractures in Men Study, a longitudinal cohort established in 2000 (baseline). We categorized percent changes in PA into groups (large decline → large increase) for 4 metrics: step count, light intensity PA (LIPA, metabolic equivalents [METs] >1.5 to 1.5). Men declined 2 336 ± 2 546 (34%) steps/d, 24 ± 31 (25%) LIPA min/d, 33 ± 58 (19%) MVPA min/d, and increased 40 ± 107 (6%) SB min/d over 7.2 ± 0.7 years. Compared to large decline (% change less than -50%), those that maintained or increased step count had 3-8 points lower PFS Physical scores; those who maintained or increased LIPA and MVPA had 2-3 and 2-4 points lower PFS Physical scores, respectively (all p ≤ .01). Associations were similar, but smaller, for PFS Mental scores. Older men who maintained or increased PA had lower fatigability, independent of initial PA. Our findings inform the types and doses of PA that should be targeted to reduce fatigability in older adults.
ISSN:1079-5006
1758-535X
1758-535X
DOI:10.1093/gerona/glac082