Synergetic Effect of Physical Activity and Fruit-vegetable Intake on the Decreasing of Cognitive Decline in Older Taiwanese

Abstract

Factors which are associated with cognitive decline among elders include physical activity and the intake of fruit and vegetable, however, long-term effects and the concurrence of physical activity and fruit-vegetable intake are unknown. The present study explores this potential synergy for the mitigation of cognitive decline among a cohort of older Taiwanese in a 16-year longitudinal study. Five population-based surveys from the Taiwan Longitudinal Survey on Aging (1995–2015) involving 4,440 respondents over 53 years old in 1999 were studied. Trends in decrease of cognitive decline were observed for 16 years. Cognitive function was assessed using the Short Portable Mental Status Questionnaire (SPMSQ). Adjustments made on regression analysis included demographic, socioeconomic, health behavioral, and disease status covariates. The risk of cognitive decline decreased 63% when high physical activity group and high intake of fruit-vegetable group were combined (OR :0.37, 95% CI: 0.23–0.59). More physical activity was combined with greater fruit-vegetable intake, cognitive decline among older Taiwanese was mitigated. This indicates that there may be a synergistic effect of physical activity and fruit-vegetable intake on mitigating cognitive decline. Synergistic personal behavior is a safe, effective, and economical approach to health in later life.