Background: Too much sitting is associated with low mental health in elderly individuals. We clarified the relationship between psychological distress and the rate of prolonged sedentary bouts (PSBs) among the elderly over four periods.
Methods: In a secondary analysis, a sample population of 68 adults aged 65 years or older in Japan was used. The following proxy variables were used: PSB (mental health) and the Kessler 6 scale; K6 scores (psychological distress).
Results: Using the cross-lagged effects models, from "2016 K6" to "2017 PSB" (p = 0.004), from "2017 K6" to "2018 PSB" (p < 0.001), and from "2018 K6" to "2019 PSB" (p = 0.021) were all significant; however, the reverse were not all significant in one period. In four periods, from "2016 PSB" to "2019 K6" (p = 0.025) was significant; however, the reverse was not significant. Fit indices were obtained: χ2 = 7.641 (p = 0.182), goodness of fit index (GFI) = 0.891, comparative fit index (CFI) = 0.901, and root mean square error of approximation (RMSEA) = 0.121 in structural equation modelling.
Conclusions: Psychological distress may affect the rate of PSB after one year, and the rate of PSB may affect the rate of psychological distress after three years in elderly individuals.
Keywords: prolonged sedentary bouts; psychological distress; structural equation modelling (SEM); the elderly.