Sleep duration affects the sequential change of body mass index and muscle strength: a contribution to dynapenic obesity

BACKGROUND

With aging, body mass index (BMI) increases and muscle strength declines, resulting in dynapenic obesity. It remains unknown whether and how sleep duration contributes to the sequence of BMI and muscle strength change in the progression of dynapenic obesity.

METHODS

Data were derived from the first two waves of China Health and Retirement Longitudinal Study. Sleep duration was self-reported. BMI was calculated and grip strength (GS) was measured to reflect muscle strength. The effect of baseline sleep duration on the sequential change of BMI and GS was assessed using two mediation models considering the nonlinear associations between them. The moderating effect of metabolic disorder was also tested.

RESULTS

Totally 4986 participants aged ≥ 50 years (50.8% females) with complete information on variables were included. Baseline BMI fully mediated the nonlinear association between sleep duration and follow-up GS change, but baseline GS did not mediate between sleep duration and follow-up BMI change for older men and women. Short sleep duration positively affected BMI-induced GS change (β = 0.038; 95%CI, 0.015-0.074), while this favorable effect became nonsignificant for moderate sleep duration (β = 0.008; 95% CI, -0.003-0.024) and turned negative with prolonged sleep duration (β =  - 0.022; 95%CI, - 0.051 to - 0.003). This nonlinear mediation effect was more pronounced in older women who are relatively metabolically healthy at baseline.

CONCLUSION

For older adults in China, the influence of sleep duration on BMI-induced GS change but not the GS-induced BMI change suggested the contribution of sleep duration to the sequential course in the progression of dynapenic obesity. Sleep duration deviated either above or below normal range may confer adverse impact on GS through BMI. Strategies addressing sleep and obesity jointly to improve muscle function and delay the progression of dynapenic obesity are required.

Levels of depressive symptoms in cardiac patients attending cardiac rehabilitation with a history of depression: pre Covid-19 and Covid-19 period comparison

Background

The large-scale changes in cardiac rehabilitation (CR) programme delivery in response to COVID-19 has led to diminished provision. The influence of these service changes on the depression symptoms of patients in CR programmes is unknown. Our study investigated the extent of depressive symptoms prior to and during the COVID-19 periods in patients with a previous history of depression at the start of CR.

Methods

Use of Registry routine practice data, National Audit of Cardiac Rehabilitation (NACR), from COVID-19 period Feb 2020 and Jan 2021, as well as pre COVID-19 period Feb 2019 and Jan 2020, was extracted. Depressive symptoms were defined according to Hospital Anxiety and Depression Score ≥ 8. Chi-square tests and independent samples t-tests were used to investigate baseline characteristics. Additionally, a binary logistic regression to examine the factors associated with high levels of depressive symptoms.

Results

In total 3661 patients with a history of depression were included in the analysis. Patients attending CR during COVID-19 were found to be 11% more likely to have high levels of acute depressive symptoms compared to patients attending CR prior to COVID-19. Physical inactivity, increased anxiety, a higher total number of comorbidities, increased weight, and living in the most deprived areas were statistically significant factors associated with high levels of acute depressive symptoms at the start of CR following multivariate adjustments.

Conclusion

Our research suggests that following a cardiac event patients with prior history of depression have high levels of acute depressive symptoms at CR baseline assessment. This finding exists in both the pre Covid-19 and Covid-19 periods in patients with a history of depression.

Determinants of depression in patients with comorbid depression following cardiac rehabilitation

Background

A prior history of depression, at the point patients start cardiac rehabilitation (CR), is associated with poor outcomes; however, little is known about which factors play a part in determining the extent of benefit following CR. Therefore, we aim to identify and evaluate determinants of CR depression outcomes in patients with comorbid depression.

Methods

An observational study of routine practice using the British Heart Foundation National Audit of Cardiac Rehabilitation data between April 2012 and March 2017. Baseline characteristics were examined with independent samples t-test and χ2 test. A binary logistic regression was used to predict change in depression outcome following CR.

Results

The analysis included 2715 CR participants with depression history. The determinants of Hospital Anxiety and Depression Scale (HADS) depression measurement post-CR were higher total number of comorbidities (OR 0.914, 95% CI 0.854 to 0.979), a higher HADS anxiety score (OR 0.883, 95% CI 0.851 to 0.917), physical inactivity (OR 0.707, 95% CI 0.514 to 0.971), not-smoking at baseline (OR 1.774, 95% CI 1.086 to 2.898) and male gender (OR 0.721, 95% CI 0.523 to 0.992).

Conclusion

Baseline characteristics of patients with comorbid depression such as higher anxiety, higher total number of comorbidities, smoking, physical inactivity and male gender were predictors of their depression levels following CR. CR programmes need to be aware of comorbid depression and these related patient characteristics associated with better CR outcomes.

Factors associated with acute depressive symptoms in patients with comorbid depression attending cardiac rehabilitation

Background

The literature suggests that comorbid depression, defined in this paper as a history of depression prior to a cardiovascular event, has an impact on later onset depression as well as constituting increased risk of mortality and adverse cardiac events. However, which factors are associated with depression, specifically in patients with comorbid depression, is unclear. Therefore, this paper investigates the factors associated with depression in patients with comorbid depression attending cardiac rehabilitation (CR).

Methods

This observational study used routinely collected data from the British Heart Foundation National Audit of Cardiac Rehabilitation for the time period between April 2012 and March 2017. CR participants with comorbid depression were selected as the study population. An independent t-test and chi-square test were used to compare the association between acute depression symptoms and baseline characteristics in this population.

Results

A total of 2715 CR patients with comorbid depression were analysed. Characteristics associated with acute depressive symptoms in patients with comorbid depression were found to be: young age (MD: 2.71, 95% CI 1.91, 3.50), increased number of comorbidities (MD: -0.50, 95% CI -0.66, − 0.34), increased weight (MD: -1.94, 95% CI -3.35, − 0.52), high BMI (MD: -1.94, 95% CI -3.35, − 0.52), HADS anxiety (MD: -5.17, 95% CI -5.47, − 4.87), comorbid anxiety (52.4%, p <  0.001), physical inactivity (150 min moderate physical activity a week and 75 min vigorous exercise a week; 27.5%, p <  0.001; 5.6%, p <  0.001 respectively), smoking (12.7%, p <  0.001), and being less likely to be partnered (63.6%, p <  0.001).

Conclusion

The study demonstrated the association between a variety of clinical and socio-demographic factors and depression. The findings of the research indicated that, at CR baseline assessment, caution must be taken with patients with comorbid depression, specifically those with higher level depressive symptoms at the start of rehabilitation. Furthermore, their multi-comorbid condition must also be taken into account. Patients with higher depression symptoms and comorbid depression scored five points higher on the HADS anxiety scale in comparison to patients with lower level depression symptoms at the start of CR, which demonstrated that anxiety and depression are interrelated and present together.

Development of a research tool to document self-reported chronic conditions in primary care

BACKGROUND

Researchers interested in multimorbidity often find themselves in the dilemma of identifying or creating an operational definition in order to generate data. Our team was invited to propose a tool for documenting the presence of chronic conditions in participants recruited for different research studies.

OBJECTIVE

To describe the development of such a tool.

DESIGN

A scoping review in which we identified relevant studies, selected studies, charted the data, and collated and summarized the results. The criteria considered for selecting chronic conditions were: (1) their relevance to primary care services; (2) the impact on affected patients; (3) their prevalence among the primary care users; and (4) how often the conditions were present among the lists retrieved from the scoping review.

RESULTS

Taking into account the predefined criteria, we developed a list of 20 chronic conditions/categories of conditions that could be self-reported. A questionnaire was built using simple instructions and a table including the list of chronic conditions/categories of conditions.

CONCLUSIONS

We developed a questionnaire to document 20 self-reported chronic conditions/categories of conditions intended to be used for research purposes in primary care. Guided by previous literature, the purpose of this questionnaire is to evaluate the self-reported burden of multimorbidity by participants and to encourage comparability among research studies using the same measurement.

Incident myocardial infarction associated with major types of arthritis in the general population: a systematic review and meta-analysis

OBJECTIVE

To synthesise, quantify and compare risks for incident myocardial infarction (MI) across five major types of arthritis in population-based studies.

METHODS

A systematic search was performed in MEDLINE, EMBASE and CINAHL databases with additional manual/hand searches for population-based cohort or case-control studies published in English of French between January 1980 and January 2015 with a measure of effect and variance for associations between incident MI and five major types of arthritis: rheumatoid arthritis (RA), psoriatic arthritis (PsA), ankylosing spondylitis (AS), gout or osteoarthritis (OA), adjusted for at least age and sex. All search screening, data abstraction quality appraisals were performed independently by two reviewers. Where appropriate, random-effects meta-analysis was used to pool results from studies with a minimum of 10 events.

RESULTS

We identified a total of 4, 285 articles; 27 met review criteria and 25 criteria for meta-analyses. In studies adjusting for age and sex, MI risk was significantly increased in RA (pooled relative risk (RR): 1.69, 95% CI 1.50 to 1.90), gout (pooled RR: 1.47, 95% CI 1.24 to 1.73), PsA (pooled RR: 1.41, 95% CI 1.17 to 1.69), OA (pooled RR: 1.31, 95% CI 1.01 to 1.71) and tended towards increased risk in AS (pooled RR: 1.24, 95% CI 0.93 to 1.65). Traditional risk factors were more prevalent in all types of arthritis. MI risk was attenuated for each type of arthritis in studies adjusting for traditional risk factors and remained significantly increased in RA, PsA and gout.

CONCLUSIONS

MI risk was consistently increased in multiple types of arthritis in population-based studies, and was partially explained by a higher prevalence of traditional risk factors in all types of arthritis. Findings support more integrated cardiovascular (CV) prevention strategies for arthritis populations that target both reducing inflammation and enhancing management of traditional CV risk factors.

Sex Variations in the Effects of Arthritis and Activity Limitation on First Heart Disease Event Occurrence in the Canadian General Population: Results From the Longitudinal National Population Health Survey

OBJECTIVE

To estimate sex-specific effects of arthritis and activity limitation on incident heart disease in a nationally representative, Canadian longitudinal population-based survey.

METHODS

Information on sociodemographic variables, self-reported physician-diagnosed chronic conditions (including arthritis and heart disease), activity limitations, and traditional risk factors was collected every 2 years from 1994-1995 through 2010-2011 as part of the longitudinal Canadian National Population Health Survey. Deaths due to ischemic heart disease (International Classification of Diseases, Tenth Revision [ICD-10] codes I20-I25) and heart failure (ICD-10 codes I50.0-I50.9) were confirmed against the Canadian Vital Statistics Database. Discrete-time survival analysis stratified by sex was used to estimate effects of arthritis and activity limitation on first heart disease event occurrence.

RESULTS

The study included 12,591 participants with no prior history of heart disease and 1,783 incident heart disease events. After adjusting for common risk factors, arthritis was associated with a significant increased risk of incident heart disease in women (adjusted odds ratio [OR] 1.58, 95% confidence interval [95% CI] 1.23-2.02). Even higher risks were reported in women with arthritis and activity limitation (OR 2.19, 95% CI 1.61-2.97). Arthritis was not associated with incident heart disease in men, except for when also reported with activity limitation (OR 1.60, 95% CI 1.14-2.26).

CONCLUSION

Women with arthritis, and men with arthritis and activity limitation, have significant excess risks for developing heart disease in the general population. These findings point to the need for improved access to arthritis care, cardiovascular prevention strategies, particularly in women with arthritis, and directed interventions toward prevention of activity limitation.

Heterogeneous Trajectories of Physical and Mental Health in Late Middle Age: Importance of Life-Course Socioeconomic Positions

Drawing on life course and cumulative disadvantage theory, this study examines heterogeneous trajectories of functional limitations and depressive symptoms among late middle-aged individuals. This study used prospective data from 6010 adults, 51 to 64 years old, collected over a 12-year-period from the Health and Retirement Study. Considering the empirical proposition that several physical and mental trajectories may exist, Latent Class Growth Modeling was used. Five heterogeneous patterns of joint trajectories (Relatively healthy, Moderately improving, Steadily deteriorating, Steeply deteriorating, and Persistently high comorbid) were identified. Early life adversity was related to an increasing risk of declines in physical and mental health. The Persistently high comorbid class was characterized by a concentration of disadvantages over the life course. The development of public health interventions could help reduce co-existing physical and mental health problems, especially during late middle-age.

Depressive Disorder Subtypes as Predictors of Incident Obesity in US Adults: Moderation by Race/Ethnicity

We compared the relative importance of atypical major depressive disorder (MDD), nonatypical MDD, and dysthymic disorder in predicting 3-year obesity incidence and change in body mass index and determined whether race/ethnicity moderated these relationships. We examined data from 17,787 initially nonobese adults in the National Epidemiologic Survey on Alcohol and Related Conditions waves 1 (2001-2002) and 2 (2004-2005) who were representative of the US population. Lifetime subtypes of depressive disorders were determined using a structured interview, and obesity outcomes were computed from self-reported height and weight. Atypical MDD (odds ratio (OR) = 1.68, 95% confidence interval (CI): 1.43, 1.97; P < 0.001) and dysthymic disorder (OR = 1.66, 95% CI: 1.29, 2.12; P < 0.001) were stronger predictors of incident obesity than were nonatypical MDD (OR = 1.11, 95% CI: 1.01, 1.22; P = 0.027) and no history of depressive disorder. Atypical MDD (B = 0.41 (standard error, 0.15); P = 0.007) was a stronger predictor of increases in body mass index than were dysthymic disorder (B = -0.31 (standard error, 0.21); P = 0.142), nonatypical MDD (B = 0.007 (standard error, 0.06); P = 0.911), and no history of depressive disorder. Race/ethnicity was a moderator; atypical MDD was a stronger predictor of incident obesity in Hispanics/Latinos (OR = 1.97, 95% CI: 1.73, 2.24; P < 0.001) than in non-Hispanic whites (OR = 1.54, 95% CI: 1.25, 1.91; P < 0.001) and blacks (OR = 1.72, 95% CI: 1.31, 2.26; P < 0.001). US adults with atypical MDD are at particularly high risk of weight gain and obesity, and Hispanics/Latinos may be especially vulnerable to the obesogenic consequences of depressions.

The measurement of multiple chronic diseases--a systematic review on existing multimorbidity indices

BACKGROUND

Multimorbidity, defined as the coexistence of 2 or more chronic diseases, is a common phenomenon especially in older people. Numerous efforts to establish a standardized instrument to assess the level of multimorbidity have failed until now, and indices are primarily characterized by their high heterogeneity. Thus, the objective is to provide a comprehensive overview on existing instruments on the basis of a systematic literature review.

METHODS

The review was performed in MedLine. All articles published between January 1, 1960 and August 31, 2009 in German or English language, with the primary focus either on the development of a weighted index or on the effect of multimorbidity on different outcomes, were identified.

RESULTS

A total of 39 articles met the inclusion criteria. In the majority of studies (59.0%), the list of included diseases was presented without any selection criteria. Only the high prevalence of diseases (17.9%), their impact on mortality, function, and health status served as a point of reference. Information on the prevalence of chronic conditions mostly rely on self-reports. On average, the 39 indices included 18.5 diseases, ranging between 4 and 102 different conditions. Most frequently mentioned diseases were diabetes mellitus (in 97.5% of indices), followed by stroke (89.7%), hypertension, and cancer (each 84.6%). Overall, three different weighting methods could be distinguished.

CONCLUSIONS

The systematic literature further emphasis the heterogeneity of existing multimorbidity indices. However, one important similarity is that the focus is on diseases with a high prevalence and a severe impact on affected individuals.

Low physical function predicts either 2-year weight loss or weight gain in healthy community-dwelling older adults. the NuAge Longitudinal Study

OBJECTIVES

Weight change in older adults affects physical function (PF). However, data suggest that, conversely, PF may be a determinant of weight change. Our objective was to assess the role of baseline PF as a predictor of 2-year weight loss (WL) and weight gain (WG) ≥ 5% among healthy well-functioning community-dwelling older adults.

METHODS

The NuAge cohort (67-84 years) was classified into three groups according to the percent weight change over a 2-year follow-up: weight stable (weight change ≤ 2%; n = 629), WL ≥ 5% (n = 189), and WG ≥ 5% (n = 111). A summary measure of baseline PF was computed (sum of biceps, quadriceps, and grip strength, timed up and go, chair stand, normal and maximal gait speed, and balance performance scores [individual test score range = 0-4]; PF score range = 0-32). Multivariable logistic regression models separately assessed the relationships between baseline PF and 2-year WL and WG ≥ 5%.

RESULTS

Baseline PF was worse in both the WL (p < .001) and the WG (p = .001) groups compared with the weight stable group. In models adjusting for sex, age, body mass index, energy intake, depressive symptoms, and other significantly associated covariates, each 1-unit increase in standard deviation of PF was associated with decreased risk of either 2-year WL (odds ratio = 0.79, 95% CI = 0.63-0.99, p = .043) or WG (odds ratio = 0.74, 95% CI = 0.55-0.99, p = .041).

CONCLUSIONS

Low baseline PF was an independent common predictor of 2-year WL and WG ≥ 5% in the healthy well-functioning community-dwelling elderly population. Whether PF is an early cause or marker of weight change in this population remains to be determined.

The interaction of obesity and psychological distress on disability

BACKGROUND

Prior research has shown that psychological problems interact with various chronic medical conditions to amplify disability, but no study has investigated this effect in obesity. The aim of this study was to evaluate the synergistic interaction of psychological distress and obesity on functional disability in an adult community sample.

METHODS

Cross-sectional data were obtained from the 2005 Canadian Community Health Survey, a nationally representative sample of 53,416 respondents aged 18 years or older. Our outcome measures were self-reported disability days and self-rated health. Our covariates of interest were non-specific psychological distress (Kessler K10 scale) and body mass index (BMI). Odds ratios of disability measures were estimated by psychological distress and weight status from logistic regressions, adjusted for sociodemographic and clinical variables.

RESULTS

Disability status was more frequent in individuals with obesity and psychological distress than in those with either obesity or psychological distress alone. Adjusted odds ratios increased progressively across BMI and psychological distress categories. Significant interactions were found for (a) obesity class I (BMI between 30.0 and 34.9 kg m(-2)) and high psychological distress; and (b) obesity class II-III (BMI > 35 kg m(-2)) and moderate to high distress.

CONCLUSION

The results suggest a strong association between psychological distress, obesity and disability. Addressing psychological distress in obese individuals might reduce the public health burden of comorbid obesity and psychological distress by tackling disability.

Relative body weight and disability in older adults: results from a national survey

OBJECTIVE

This study examined the sociodemographic, health, and economic determinants of limitations in performing instrumental activities of daily living (IADL) in Canadians 65 years and older with emphasis on the role of relative body weight. Furthermore, the study examined the relationship between these limitations and the whole range of relative body weight while controlling for the above determinants.

METHOD

This research used data collected in the Canadian Community Health Survey in 2005 on Canadians 65 years and older (N = 21,255).

RESULTS

The odds of experiencing IADL limitations were higher for women, the poor, and those not living with a partner. These odds also increased with advancing age and weaker physical health. Controlling for socioeconomic and health characteristics, the odds of experiencing such limitations were significantly elevated in underweight and obese individuals but not in overweight individuals.

DISCUSSION

Prevention and intervention strategies targeting underweight and obese individuals should be a policy priority.