Relationship between Physical Function and Sleep Quality in African Americans

Gender differences in the association of sleep quality with perceived physical and mental health in Iranian elderly

BACKGROUND

The relationship of sleep with objective health measures is well-known, but the link between sleep quality and self-rated health is less clear. We investigated the association of sleep quality with self-rated physical and mental health in a sample of Iranian elderly.

METHODS

The cross-sectional study was performed on older men (n = 92) and women (n = 213). Sleep quality and self-rated health were assessed by Pittsburgh Sleep Quality Index (PSQI) questionnaire and Patient-Reported Outcomes Measurement Information System (PROMIS), respectively. The association of sleep quality and PROMIS scales were examined by linear regression analysis.

RESULTS

Both men and women indicated high levels of poor sleep quality, but women had a worse condition (P < 0.001). Women also had lower scores of perceived global and physical health compared to men (P < 0.001 for both) but mental health score was not different between genders (P = 0.114). Sleep quality was associated with PROMIS scales of physical, mental, and global health in the crude regression model for both men and women but it was not associated with mental health scale after controlling for potential confounders in men. Physical health and fatigue were associated with poor sleep quality in both men and women. Mental health, emotional problems, pain, quality of life, and performing social activities/roles were associated with poor sleep quality only in women.

CONCLUSIONS

Good sleep quality may help both genders for general and physical health, but older women may also benefit in terms of emotional and mental health.

Association between number of functional teeth and physical function among community-dwelling older adults: Korean Frailty and Aging Cohort Study

BACKGROUND

Functional teeth are important for maintaining appropriate masticatory function and nutritional intake, affecting physical function in older adults. This study aimed to evaluate the association between number of functional teeth and physical function in community-dwelling older Korean adults.

METHODS

This cross-sectional study was conducted among a total of 2,527 participants (mean age, 76.5 ± 3.9; 53.4% women) who were enrolled in the Korean Frailty and Aging Cohort Study (2016-2017). Participants were categorized based on the number of functional teeth into two groups: < 20 and ≥ 20 functional teeth. Functional teeth were defined as the remaining natural teeth with visible crowns, with or without restorations, prosthetic pontics, or dental implants on panoramic radiography. Physical function was assessed using handgrip strength, gait speed, five-times sit-to-stand test (5TSTS) duration, and the Short Physical Performance Battery (SPPB) score. Multivariate linear and logistic regression models were used to evaluate the association between number of functional teeth and physical function.

RESULTS

Of all the participants, 869 (34.3%) had < 20 functional teeth. After full adjustment for sociodemographic factors, lifestyle, health condition, and oral health, an increase in one functional tooth was associated with a corresponding increase in gait speed (men: B = 0.002, p = 0.032; women: B = 0.002, p = 0.013) and SPPB (men: B = 0.019, p < 0.001; women: B = 0.018, p < 0.001) in both men and women. The time taken for the 5TSTS was shorter for an increase in one more functional tooth (men, B=-0.033, p = 0.006; women, B=-0.036, p = 0.021) in both men and women. An increase in one functional tooth was associated with a corresponding increase in handgrip strength only in men (men, B = 0.049, p = 0.009; women, B=-0.003, p = 0.814). The associations between < 20 functional teeth and low handgrip strength [odds ratio (OR) = 1.46, 95% confidence interval (CI): 1.03-2.06], long 5TSTS duration (OR = 1.47, 95% CI: 1.07-2.02), and low SPPB scores (OR = 1.64, 95% CI: 1.07-2.53) were significant in fully adjusted model compared with ≥ 20 functional teeth only in men.

CONCLUSIONS

Fewer functional teeth were associated with low physical function in older adults. Our results emphasize the importance of maintaining adequate functional teeth to preserve physical function in community-dwelling older adults.

Relationship of psychotropic medication use with physical function among postmenopausal women

To examine cross-sectional and longitudinal relationships of psychotropic medications with physical function after menopause. Analyses involved 4557 Women's Health Initiative Long Life Study (WHI-LLS) participants (mean age at WHI enrollment (1993-1998): 62.8 years). Antidepressant, anxiolytic, and sedative/hypnotic medications were evaluated at WHI enrollment and 3-year follow-up visits. Performance-based physical function [Short Physical Performance Battery (SPPB)] was assessed at the 2012-2013 WHI-LLS visit. Self-reported physical function [RAND-36] was examined at WHI enrollment and the last available follow-up visit-an average of 22 [±2.8] (range: 12-27) years post-enrollment. Multivariable regression models controlled for socio-demographic, lifestyle, and health characteristics. Anxiolytics were not related to physical function. At WHI enrollment, antidepressant use was cross-sectionally related to worse self-reported physical function defined as a continuous (β = -6.27, 95% confidence interval [CI]: -8.48, -4.07) or as a categorical (< 78 vs. ≥ 78) (odds ratio [OR] = 2.10, 95% CI: 1.48, 2.98) outcome. Antidepressant use at WHI enrollment was also associated with worse performance-based physical function (SPPB) [< 10 vs. ≥ 10] (OR = 1.53, 95% CI: 1.05, 2.21) at the 2012-2013 WHI-LLS visit. Compared to non-users, those using sedative/hypnotics at WHI enrollment but not at the 3-year follow-up visit reported a faster decline in physical function between WHI enrollment and follow-up visits. Among postmenopausal women, antidepressant use was cross-sectionally related to worse self-reported physical function, and with worse performance-based physical function after > 20 years of follow-up. Complex relationships found for hypnotic/sedatives were unexpected and necessitate further investigation.

Sleep as a Predictor of Health-Related Quality of Life among Economically Disadvantaged Black Older Adults

Objectives

Sleep disturbances may partially account for the health-related quality of life (HRQoL) disparities experienced by Black older adults when compared to non-Hispanic White (NHW) adults. The present study examined the role of self-reported sleep duration and the belief that one is not getting enough sleep on physical and mental HRQoL among Black older adults.

Design

Participants were 281 community-dwelling, economically disadvantaged Black older adults between 60 and 97 years of age (Mean=69.01, SD=6.97) who lived in a large city in the Southeastern United States. The present study uses baseline data from a larger intervention study aimed at promoting social connection and food security among older adults. For this study (and as part of the larger intervention), participants completed an assessment battery that included (1) a demographic data and health questionnaire that included self-reported sleep duration and a belief that one is not getting enough sleep questions; (2) the CDC (Centers for Disease Control and Prevention) Health-Related Quality of Life-14 Healthy Days Core Module; and (3) the World Health Organization Quality of Life-Brief Form.

Results

Descriptive results show that most participants slept less than 7 hours and felt like they did not get enough sleep. Results from 2 hierarchical regressions also showed that believing one is not getting enough sleep predicts lower self-reported mental and physical HRQoL.

Conclusion

While sleep deprivation has a serious impact on quality of life for Black older adults, sleep disturbances in this population are understudied. Interventions to improve sleep duration and quality among Black older adults may help reduce disparities in quality of life between Black older adults and NHW adults.

Accelerometer-assessed sleep and decline in physical function in older men

OBJECTIVES

Assess the prospective association of actigraphically measured sleep with self-report and objective measures of physical function among community-dwelling older men.

METHODS

Participants were (n = 1496) men aged ≥65 years from the Osteoporotic Fractures in Men Study and ancillary sleep study who were followed up at 4 years for physical function outcomes. Sleep predictors included baseline total sleep time (<6, 6-8 hours [reference], >8 hours), sleep efficiency (<80% or ≥80% [reference]), wake after sleep onset (<90 [reference] or ≥90 minutes), and sleep onset latency (<30 [reference] or ≥30 minutes), measured by wrist actigraphy. Outcomes included self-reported difficulties in mobility and instrumental activities of daily living and objective measures of physical performance (time to complete chair stands, gait speed, grip strength, best narrow walk pace). Multivariable regression models estimated associations between the sleep predictors and change in physical function at follow-up, adjusting for demographic and health-related variables.

RESULTS

Participants with short average baseline total sleep time (<6 hours) had significantly greater slowing in their walking speed from baseline to follow-up. Participants with long baseline sleep onset latency (≥30 minutes) had significant increases in mobility difficulties and time to complete chair stands. Sleep efficiency and wake after sleep onset were not significantly associated with any outcomes. No sleep predictors were associated with change in instrumental activities of daily living.

CONCLUSIONS

These findings add to the body of evidence showing links between poor sleep and subsequent declines in physical function. Further experimental research is needed to understand the mechanisms at play.

Sleep Quality among Homeless-Experienced Older Adults: Exploratory Results from the HOPE HOME Study

BACKGROUND

Sleep is essential to health and affected by environmental and clinical factors. There is limited longitudinal research examining sleep quality in homeless older adults.

OBJECTIVE

To examine the factors associated with poor sleep quality in a cohort of older adults in Oakland, California recruited while homeless using venue-based sampling and followed regardless of housing status.

DESIGN

Longitudinal cohort study.

PARTICIPANTS

244 homeless-experienced adults aged ≥ 50 from the Health Outcomes in People Experiencing Homelessness in Older Middle Age (HOPE HOME) cohort.

MAIN MEASURES

We assessed sleep quality using the Pittsburgh Sleep Quality Index (PSQI). We captured variables via biannual questionnaires and clinical assessments.

KEY RESULTS

Our sample was predominantly men (71.3%), Black (82.8%), and had a median age of 58.0 years old (IQR 54.0, 61.0). Two-thirds of participants (67.2%) reported poor sleep during one or more study visits; sleep duration was the worst rated subdomain. In a multivariable model, having moderate-to-severe depressive symptoms (AOR 2.03, 95% CI 1.40-2.95), trouble remembering (AOR 1.56, 95% CI 1.11-2.19), fair or poor physical health (AOR 1.49, 95% CI 1.07-2.08), two or more chronic health conditions (AOR 1.76, 95% CI 1.18-2.62), any ADL impairment (AOR 1.85, 95% CI 1.36-2.52), and being lonely (AOR 1.55, 95% CI 1.13-2.12) were associated with increased odds of poor sleep quality. Having at least one confidant was associated with decreased odds of poor sleep (AOR 0.56, 95% CI 0.37-0.85). Current housing status was not significantly associated with poor sleep quality.

CONCLUSIONS

Homeless-experienced older adults have a high prevalence of poor sleep. We found that participants' physical and mental health was related to poor sleep quality. Poor sleep continued when participants re-entered housing. Access to physical and mental healthcare, caregiving support, and programs that promote community may improve homeless-experienced older adults sleep quality, and therefore, their overall health.

The relationship between sleep status and activity of daily living: based on China Hainan centenarians cohort study

OBJECTIVE

This study, based on the China Hainan Centenarians Cohort Study (CHCCS), aims to comprehensively describe the characteristic of daytime, night and total sleep duration, sleep quality and different sleep mode of Hainan centenarians and their associations with activity of daily living (ADL) functions.

METHOD

The baseline data of CHCCS was used. ADL function was evaluated the Bathel index, sleep quality was evaluated by Pittsburgh sleep quality index (PSQI), sleep status including daytime, night and total sleep duration as well as sleep quality and sleep mode. Multivariate logistic regression model was used to explore the association between sleep status and ADL disability and ADL moderate & severe disability.

RESULTS

A total of 994 centenarians were included in this study with the age range 100-116 years old. Compared with the centenarians who sleep 6-9 h at night and < 2 h in the daytime, the adjusted OR between sleep > 9 h at night and sleep ≥ 2 h in the daytime and ADL disability was 2.93 (95% CI: 1.02-8.44), and adjusted OR of ADL moderate & severe disability was 2.75 (95% CI: 1.56-4.83). Compared with centenarians who sleep for 7-9 h and have good sleep quality, centenarians who sleep for > 9 h and have poor sleep quality have an increased risk of ADL moderate & severe disability (OR = 3.72, 95% CI: 1.54-9.00).

CONCLUSION

Relation between sleep duration and ADL disability was more significant compared with sleep quality in Hainan centenarians. Poor sleep quality can aggravate the relationship between sleep duration and ADL moderate & severe disability.

How sleep quality affects activities of daily living in Parkinson's disease: the mediating role of disease severity and the moderating role of cognition

Objective

The aim of this study was to explore the influential mechanism of the relationship between sleep quality and activities of daily living (ADL) in patients with Parkinson's disease (PD), we hypothesized disease severity as a mediator and assumed the mediating process was regulated by cognition.

Methods

194 individuals with PD (95 women and 99 men) were enrolled in study. The Pittsburgh Sleep Quality Index (PSQI) was used to assess sleep quality of PD patients. Patients' ADL, disease severity and cognition were measured by the Unified Parkinson's Disease Rating Scale-II (UPDRSII), Hoehn-Yahr (H-Y) Scale, and Mini-Mental State Examination (MMSE). We investigated the mediating role of disease severity and the moderating effect of cognition on the association between sleep quality and ADL in PD patients.

Results

The score of UPDRSII was positively correlated with the score of PSQI and H-Y stage, while the score of MMSE was negatively correlated with the score of H-Y stage and UPDRSII. Sleep quality predicts disease severity, and disease severity predicts ADL. Disease severity mediated the relationship between sleep quality and ADL, and the mediating effect was 0.179. Cognition alone did not affect ADL, but the interaction between disease severity and cognition was significantly affected ADL, confirming the moderating effect of cognition in PD patients.

Conclusion

Disease severity mediated the association between sleep quality and ADL, good cognition significantly reduced disease severity's mediating influence on the relationship between sleep quality and ADL. Our study indicated a close relationship between ADL and sleep and cognition in PD, and also provided new insights into the overall management of PD and a better quality of life of PD patients.

Patient-Reported Outcomes Measurement Information System -29 Domains Interaction in Chronic Musculoskeletal Pain During Acupuncture: A Pilot Study

Objective

This pilot study explored interactions of domains of physical, psychologic, and social factors in the Patient-Reported Outcomes Measurement Information System® (PROMIS®)-29 system and their dynamic changes during acupuncture treatment of chronic musculoskeletal pain.

Materials and Methods

PROMIS-29 profile, version 2.1 was applied among participants with chronic musculoskeletal pain, who received acupuncture treatment for 5 weeks. Data from function-oriented and symptom-oriented domains as well as changes in pain intensity were evaluated at weeks 0, 3, and 5, in 9 patients who completed full sessions. Scores of the domains were analyzed by hierarchical cluster analysis at each timepoint to identify the patterns of interactions of PROMIS domains.

Results

Hierarchical cluster analysis revealed the existence of 2 main clusters: one consisting of pain, fatigue, and emotional domains; the other comprising physical function and social domains. The general pattern was stable but interactions were found throughout the treatment. The score for sleep disturbance did not improve but was correlated with different domains at varying stages of treatment.

Conclusions

Interaction between 2 clusters of pain with fatigue and emotional domains; and physical function with social domains showed that acupuncture produces holistic reductions in chronic musculoskeletal pain. However, the limitation of sample size and bias in this pilot study requires future research on the need to adopt an interdisciplinary and holistic approach to the recovery of patients with chronic musculoskeletal pain, who have dynamic needs.

Profiles of sleep and depression risk among Caribbean Blacks

Objectives: Sleep problems are associated with a host of psychiatric disorders and have been attributed to race disparities in health and wellness. Studies of sleep and mental health do not typically consider within-group differences among Blacks. Thus, our understanding of how the sleep-mental health relationship among Caribbean Blacks is limited. This study identified sleep profiles among Caribbean-born Blacks who reside in the United States.Design: Latent class analysis and data from the National Survey of American Life Re-interview study were used to identify and compare the associations between 'sleep quality classes,' sociodemographic factors, stress, and depression risk among Caribbean Blacks.Results: Two sleep quality classes were identified - 'good sleep quality' and 'poor sleep quality' - with each class demonstrating a complex pattern of sleep experiences, and illuminating the association between sleep and depression risk.Conclusions: Findings provide insight into the influence of sociodemographic factors and social stressors on the sleep experience of Caribbean Blacks and the importance of considering within-group differences to better understand risk and resilience among Caribbean Blacks living in the United States. Findings also highlight the importance of screening for sleep problems in an effort to reduce the burden of depression experienced by this population.

Objectively measured sleep and physical function: Associations in low-income older adults with disabilities

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.

Insomnia Symptoms among African-American Older Adults in Economically Disadvantaged Areas of South Los Angeles

BACKGROUND

Although psychosocial and health factors impact insomnia symptoms, less is known about these effects in economically disadvantaged African-American older adults.

AIMS

This study investigated social and health determinants of insomnia symptoms among economically disadvantaged African-American older adults.

METHODS

This survey enrolled 398 African-American older adults (age ≥ 65 years) from economically disadvantaged areas of South Los Angeles. Gender, age, educational attainment, financial difficulty, number of chronic diseases, self-rated health, pain intensity, and depression were covariates. Total insomnia, insomnia symptoms, and insomnia impact were our outcomes. Linear regression was applied for data analysis.

RESULTS

Based on linear regression, higher financial difficulty (B = 0.48, 95% CI = 0.35-0.61), smoking status (B = 1.64, 95% CI = 0.13-3.16), higher pain intensity (B = 0.39, 95% CI = 0.11-0.67), higher number of chronic diseases (B = 0.34, 95% CI = 0.05-0.64), and more depressive symptoms (B = 0.35, 95% CI = 0.12-0.57) were associated with a higher frequency of insomnia symptoms. Based on a logistic regression model, lower age (B = 0.91, 95% CI = 0.91-1.00) and high financial difficulty (OR = 1.15, 95% CI = 1.08-1.24), pain (OR = 2.08, 95% CI = 1.14-3.80), chronic disease (OR = 1.27, 95% CI = 1.07-1.51) and depression (OR = 2.38, 95% CI = 1.22-4.65) were associated with higher odds of possible clinical insomnia. We also found specific predictors for insomnia symptoms and insomnia impact.

CONCLUSIONS

Among African-American older adults in economically disadvantaged areas of South Los Angeles, insomnia symptoms co-occur with other economic, physical, and mental health challenges such as financial difficulty, smoking, multimorbidity, pain, and depression. There is a need to address sleep as a component of care of economically disadvantaged African-American older adults who have multiple social and health challenges.

Treatment destinations and visit frequencies for patients seeking medical treatment overseas from the United Arab Emirates: results from Dubai Health Authority reporting during 2009-2016

BACKGROUND

Each year, the Dubai Health Authority (DHA) spends millions of dollars to cover the costs of United Arab Emirates (UAE) nationals seeking healthcare overseas. Patients may travel overseas to seek an array of treatments. It is important to analyze the number of trips and treatment destinations for patients travelling overseas to provide baseline information for the DHA to improve polices and strategies related to overseas treatment for UAE nationals.

METHODS

Administrative data were obtained from the DHA for UAE nationals who sought medical treatment overseas during 2009-2016. We examined the number of trips and treatment destinations by medical specialty, age, gender, years of travel and travel seasons. Multinomial logistic and negative binomial regression models were used to assess the relationships of the treatment destinations and number of trips, respectively, with the key variables of interest.

RESULTS

The study included data from 6557 UAE nationals. The top three treatment destinations were Germany (46%), the UK (19%) and Thailand (14%). The most common medical specialties were orthopedic surgery (13%), oncology (13%) and neurosurgery (10%). Oncology had the highest expected number of trips adjusted for a number of covariates (IRR 1.34, 95% CI: 1.24-1.44). Regarding destination variation, patients had a lower relative risk ratio of seeking healthcare in Germany in the winter (RRR 0.68, 95% CI: 0.57-0.80). Endocrinology was the most common medical specialty sought in the UK (RRR 3.36, 95% CI: 2.01-5.60).

CONCLUSIONS

This is the first study to systematically examine the current practice of medical treatment overseas among UAE nationals. The results demonstrate that treatment destinations, medical specialties for which treatment was sought, age, gender and travel season are significant factors in understanding overseas travel for medical care. The study can guide the DHA in collecting more data for further research that may lead to policy-relevant information about sending patients to the best-quality treatment choices at an optimal cost.

Associations of sleep disturbance with physical function and cognition in older adults with cancer

PURPOSE

Although sleep disturbances are common in older adults, studies evaluating the prevalence of sleep disturbance and its influence on functional outcomes in older adults with cancer are few. In this study, we examined the prevalence of sleep disturbance and its association with physical function and cognition in older adults with cancer.

METHODS

This is a cross-sectional study of patients who were referred and evaluated in the Specialized Oncology Care & Research in the Elderly (SOCARE) clinics at the Universities of Rochester and Chicago from May 2011 to October 2015. All patients underwent a geriatric assessment (GA) as part of their routine evaluation. Our final study cohort included patients who completed a sleep assessment and consented to the study. We collected demographics (age, sex, race, marital status, and education level) and clinical characteristics (depression, comorbidity, cancer type, and stage) from the GA and medical chart reviews. Presence of sleep disturbance was self-reported (yes/no). Physical function was assessed using Instrumental Activities of Daily Living (IADLs), physical activity (PA) survey, falls in the preceding 6 months, and Short Physical Performance Battery (SPPB). Cognition was screened using the Blessed Orientation-Memory-Concentration Test (impairment >4) or Montreal Cognitive Assessment (impairment <26). Bivariate and multivariable analyses were used to examine the associations between sleep disturbance with functional outcomes and cognition.

RESULTS

We included 389 older patients. The prevalence of sleep disturbance was 40%. Sixty-eight percent had ≥1 IADL impairment, 76% had PA limitation, 37% had ≥1 fall, 70% had impairment on SPPB, and 47% screened positive for cognitive impairment. On bivariate analyses, sleep disturbance was associated with IADL impairment (odds ratio [OR] 1.96, 95% confidence interval [CI] 1.23-3.13, P = 0.005), and PA limitation (OR 2.43, 95% CI 1.38-4.28, P = 0.002). The associations remained significant on multivariable analyses. Sleep disturbance was not significantly associated with falls, impairment on SPPB, and performance on the cognitive screen.

CONCLUSION

Sleep disturbance was associated with IADL impairment and PA limitation. It is important for oncologists to inquire about sleep problems, and these patients should also be screened for functional impairment if sleep disturbance was present.