Safiyyah M Okoye1, Sarah L Szanton2, Nancy A Perrin3, Manka Nkimbeng4, Jennifer A Schrack5, Hae-Ra Han6, Casandra Nyhuis7, Sarah Wanigatunga7, Adam P Spira8. 1. Johns Hopkins University School of Nursing, Baltimore, Maryland, USA; Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA; Johns Hopkins Center on Aging and Health, Baltimore, Maryland, USA. Electronic address: sokoye1@jhmi.edu. 2. Johns Hopkins University School of Nursing, Baltimore, Maryland, USA; Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA; Johns Hopkins Center on Aging and Health, Baltimore, Maryland, USA. 3. Johns Hopkins University School of Nursing, Baltimore, Maryland, USA. 4. University of Minnesota School of Public Health, Minneapolis, Minnesota, USA. 5. Johns Hopkins Center on Aging and Health, Baltimore, Maryland, USA; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA. 6. Johns Hopkins University School of Nursing, Baltimore, Maryland, USA; Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA. 7. Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA. 8. Johns Hopkins Center on Aging and Health, Baltimore, Maryland, USA; Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA; Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland, USA.
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.
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.
Authors: John P Bentley; Cynthia J Brown; Gerald McGwin; Patricia Sawyer; Richard M Allman; David L Roth Journal: Qual Life Res Date: 2012-11-17 Impact factor: 4.147
Authors: Yeonsu Song; Joseph M Dzierzewski; Constance H Fung; Juan C Rodriguez; Stella Jouldjian; Michael N Mitchell; Karen R Josephson; Cathy A Alessi; Jennifer L Martin Journal: J Am Geriatr Soc Date: 2015-07-22 Impact factor: 5.562
Authors: Suzanne E Goldman; Katie L Stone; Sonia Ancoli-Israel; Terri Blackwell; Susan K Ewing; Robert Boudreau; Jane A Cauley; Martica Hall; Karen A Matthews; Anne B Newman Journal: Sleep Date: 2007-10 Impact factor: 5.849
Authors: Karen A Matthews; Sanjay R Patel; Elizabeth J Pantesco; Daniel J Buysse; Thomas W Kamarck; Laisze Lee; Martica H Hall Journal: Sleep Health Date: 2017-12-13