Associations between sedentary behavior and happiness: An analysis of influential factors among middle-aged and older adults from six low- and middle-income countries.

Higher levels of sedentary behavior (SB) may be associated with decreased happiness but there are no studies on this topic. Thus, we investigated this association, and its influential factors among middle-aged and older adults using nationally representative datasets from six low- and middle-income countries (LMICs). Community-based cross-sectional data from the Global Ageing and Adult Health study were analyzed. SB was assessed with the Global Physical Activity Questionnaire. Multivariable ordinal logistic regression and mediation analyses were performed. Happiness was assessed with a cross-culturally validated single-item question (5-point scale) with higher scores indicating higher levels of happiness. The final sample included 34,129 adults aged 50 years or more (mean age = 62.4 ± SD 16 years; 51.9 % female). After adjusting for multiple confounders, increased time spent in SB (hours/day) was associated with lower happiness levels (OR = 0.96; 95 % CI = 0.94-0.98). Mobility limitations, cognitive complaints, pain/discomfort, sleep problems and disability explained the largest proportion of the association between SB and happiness. SB was linked with lower levels of happiness in middle-aged and older adults from LMICs, although a high level of between-country heterogeneity was observed. Longitudinal and interventional studies among older people in LMICs are warranted to assess directionality and the potential for reduction in SB to improve mental well-being in this population.

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