Dynapenic abdominal obesity is related to cardiovascular risk in older adults with Parkinson's disease: A cross sectional study

Interaction effect between sleep duration and dynapenic abdominal obesity for predicting functional disability: A longitudinal study

OBJECTIVE

To assess the interaction of dynapenic abdominal obesity (DAO) and sleep duration on the risk of functional disability among middle-aged and older Chinese individuals.

METHODS

Data were extracted from the China Health and Retirement Longitudinal Study conducted in 2011, 2013, 2015, 2018, and 2020. A total of 6,343 participants were enrolled in this retrospective cohort study. Sleep duration was obtained through face-to-face interviews. Dynapenia (D) and abdominal obesity (AO) were defined by handgrip strength and waist circumference, respectively. Functional disability was assessed according to activities of daily living scales. Cox proportional hazard models analyzed the interactions of DAO and sleep duration on functional disability.

RESULTS

Over a mean follow-up of 10 years, 3,879 (61.2%) participants reported functional disability. Individuals with short sleep duration and D/AO (appropriate but short: RR = 1.42, 95% CI = 1.10-1.82, too short sleep: RR = 1.54, 95% CI = 1.16-2.06), long sleep duration and D/AO (appropriate but long: RR = 1.61, 95% CI = 1.11-2.33; too long: RR = 1.63, 95% CI = 1.15-2.32), were more likely to develop functional disability than those with normal sleep duration and ND/NAO in the fully adjusted model. The multiplicative interaction between the short sleep group and D/NAO or ND/AO were both significant. Middle-aged individuals and females were more susceptible to the effects of short sleep and DAO, while elderly individuals and males were more susceptible to the effects of long sleep and DAO.

CONCLUSIONS

Short and long sleep durations combined with DAO increase the risk of functional disability. Managing waist circumference and improving grip strength in middle-aged and older adults with abnormal sleep durations may help prevent functional disability.

Dynapenic Abdominal Obesity and Metabolic Health in Non-Geriatric Patients with Obesity

Background: Dynapenic abdominal obesity (DAO) is the combination of low muscle strength and high central adiposity, which can lead to functional and cardiometabolic impairments. Objective: The aim of this study was to examine the relationship between DAO and metabolic parameters in non-geriatric patients with obesity. Methods: All patients seen in the obesity outpatient clinic during a random month, along with 30 healthy individuals, were included in the study. Body mass index (BMI), waist circumference (WC), hip circumference (HC), serum fasting blood glucose, triglyceride, high-density lipoprotein, low-density lipoprotein (LDL), insulin, and glycated hemoglobin (HbA1c) levels were measured. Muscle function tests were conducted. Hypertension and diabetes mellitus diagnoses were recorded. DAO was determined using handgrip strength and WC. Metabolic syndrome was defined based on International Diabetes Federation (IDF) criteria. Data were analyzed using SPSS. Results: A total of 106 individuals participated in the study, including 76 individuals with obesity as the case group and 30 healthy individuals as the control group. In the case group, BMI, WC, HC, and chair stand test results were higher compared to the control group. There was no significant difference between the case and control groups in terms of gait speed or handgrip test results. In the case group, 30 people (39.5%) had dynapenic obesity (DO), and in the control group, 8 people (26.7%) had DO. There was no significant difference in DO rates between the case and control groups. In the case group, the HbA1c level was higher in DO (+) group than DO (-) group. In the control group, DO (+) group had higher LDL and HbA1c level than DO (-) group. No significant difference was observed in other search parameters between the DO (+) and DO (-) groups in both the case and control groups. Conclusion: DAO is common among people with obesity and contributes to a poor prognosis, increased morbidity, and mortality. Therefore, including its treatment in the management of obesity is crucial for individuals of all age ranges.