Objectively measured sleep and physical function: Associations in low-income older adults with disabilities.
Sleep Health
; 7(6): 735-741, 2021 12.
Article
en En
| MEDLINE
| ID: mdl-34602384
ABSTRACT
OBJECTIVE:
Late-life sleep health has been tied to physical function, but little is known about these associations among socially disadvantaged populations.DESIGN:
We determined cross-sectional associations of sleep with physical function in low-income, predominantly Black older adults with disabilities.PARTICIPANTS:
One hundred thirty-six older adults (mean age 76.0 years, 83.8% women, 82.4% Black). MEASUREMENTS Primary predictors were actigraphic total sleep time (TST), wake after sleep onset (WASO), and subjective sleep complaints. Outcomes were objective physical performance (Short Physical Performance Battery (SPPB)) and participant-reported difficulties in basic and instrumental activities of daily living (ADLs and IADLs).RESULTS:
In regression models adjusted for potential confounders, both longer TST and greater WASO were associated with lower SPPB scores and increased IADL difficulty. Participants with a mean TST in the longest (>7.5 hours) vs. intermediate (6.3-7.5 hours) tertile had 27% higher odds of additional IADL difficulty (incident rate ratio = 1.27, 95% confidence interval [CI] 1.03, 1.58). Each additional 10 minutes of WASO was associated with 0.13 point lower SPPB scores (B = -0.13, 95% CI -0.25, -0.01) and increased IADL difficulty (B = 0.02, 95% CI 0.0003, 0.04). Sex moderated the associations of WASO with IADL and ADL difficulties associations were stronger for males. Subjective sleep complaints were not statistically significantly associated with function.CONCLUSIONS:
Among disabled, low-income, mostly Black older adults, objective measures of long sleep and greater WASO are associated with poorer physical function. Effect sizes for the associations were modest; however, findings may have important implications given the significant consequences of decreased function on quality of life and caregiving demands.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Trastornos del Sueño-Vigilia
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Personas con Discapacidad
Tipo de estudio:
Observational_studies
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Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Aged
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Female
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Humans
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Male
Idioma:
En
Revista:
Sleep Health
Año:
2021
Tipo del documento:
Article