Adiposity and dementia among Chinese adults: longitudinal study in the China Health and Retirement Longitudinal Study (CHARLS).

Background: Evidence on the age-dependent association between adiposity and risk of dementia in the Chinese population is unclear. We aim to disentangle the association of mid- and late- life adiposity with subsequent dementia risk in Chinese adults and compare ageing trajectories of adiposity between those with/out dementia.

Methods: Dementia was ascertained based on cognitive batteries and the Activity of Daily Living Scale in the China Health and Retirement Longitudinal Study (CHARLS).

Correction: Income inequality and its relationship with loneliness prevalence: A cross-sectional study among older adults in the US and 16 European countries.

[This corrects the article DOI: 10.1371/journal.pone.

The Relationship Between Work and Depressive Symptoms in Older Adults: The Moderating Effect of Income, Subjective Socioeconomic Status, and Social Participation.

Objectives: We examined the moderating effects of household income, subjective socioeconomic status (SES), social contact, and social engagement on the work-depressive symptoms relationship.

Methods: We analyzed data from 5,216 adults aged 60 and older from six waves (2008-2018) of the Korean Longitudinal Study of Ageing (KLoSA).

Results: Two-level mixed-effects models showed that within-individual variation in work status was negatively associated with depressive symptoms.

Associations of accelerometer-measured physical activity, sedentary behaviour, and sleep with next-day cognitive performance in older adults: a micro-longitudinal study.

Background: Previous studies suggest short-term cognitive benefits of physical activity occurring minutes to hours after exercise. Whether these benefits persist the following day and the role of sleep is unclear. We examined associations of accelerometer-assessed physical activity, sedentary behaviour, and sleep with next-day cognitive performance in older adults.

Do obstructive and restrictive pulmonary disorders increase the incidence risk of dynapenia in adults aged 50 and older?

Objective: This study aims to evaluate whether obstructive or restrictive lung disorders are associated with the incidence of dynapenia in individuals aged 50 and over.

Methods: Longitudinal study involving 4,975 participants from the English Longitudinal Study of Aging (ELSA) aged 50 or older, without dynapenia at baseline, followed for eight years. Lung function was assessed by spirometry (predicted percentage) and participants were classified as no pulmonary disorder (FEV ≥ 80 %, FVC ≥ 80 % and FEV/FVC ≥ 70 %); with obstructive pulmonary disorder (FEV < 80 %, FEV/FVC < 70 % and normal FVC or < 80 %); or with restrictive pulmonary disorder (FVC < 80 %, FEV/FVC > 70 % and normal or < 80 % FEV).