ArticleThe journals of gerontology. Series A, Biological sciences and medical sciences2026
Associations of accelerometer-estimated sleep with cardiorespiratory fitness and energetic efficiency among middle-aged and older adults.
Article in The journals of gerontology. Series A, Biological sciences and medical sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Associations of actigraphic sleep parameters with adipokines in older adults in the Baltimore longitudinal study of aging.Sleep advances : a journal of the Sleep Research Society · 2026Article
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Authors and funding
13 authors.
Funding
Abstract
backgroundSleep disturbances and cardiovascular disease are common and often co-occur in middle-aged and older adults, but less is known about associations of sleep with cardiorespiratory fitness (CRF) and energy efficiency in these populations. We examined cross-sectional associations of accelerometer-derived sleep metrics with CRF, walking energetics, and resting metabolic rate (RMR), and explored whether associations were moderated by age, sex, and race.
methodsWe studied 263 participants from the Baltimore Longitudinal Study of Aging (mean age 72.7 ± 10.1 years, 53.6% women). Predictors included total sleep time (TST), sleep efficiency (SE), sleep onset latency, wake after sleep onset, and average wake bout length (WBL). Outcomes included measures of CRF (ie, maximal oxygen consumption [VO2peak]) and energetic efficiency (ie, energetic cost of walking and RMR).
resultsAfter adjusting for demographics, comorbidities, and self-reported physical activity, longer WBL was associated with lower VO2peak (B= -1.01 ml/kg/min, P < .01) and higher RMR (B = 43.25 kcal, P < .05), lower SE was associated with lower VO2peak (B = 1.07 ml/kg/min, P < .01), and shorter TST was associated with lower VO2peak (B = 0.33 ml/kg/min, P < .05). Higher SE was associated with lower RMR among middle-aged adults but not older adults (interaction P-value < 0.05).
conclusionShorter TST, longer WBL, and lower SE are associated with poorer CRF and energetic efficiency among middle-aged and older adults. Longitudinal studies are needed to understand the temporality of these associations and potential targets for interventions in these populations.
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