Association Between Physical Activity and Physical Fitness Among Adults Aged 40 to 79 Years - Beijing, China, 2020-2021

What is already known about this topic? Physical fitness is well documented to be associated with physical activity among adults in the United States. In China, research on this association places a heavier emphasis on the populations of children and adolescents. What is added by this report? Physical fitness was shown to be positively associated with physical activity among adults aged 40 to 79 years in China. In populations with lower levels of physical fitness, this association was stronger. The coefficients of the log-transformed metabolic equivalent value of physical activity (logPA) in quantile regression models at the 25th, 50th, 75th, and 90th percentile of the physical fitness indicators were 1.14, 1.04, 0.89, and 0.84, respectively. What are the implications for public health practice? Effective measures should be implemented to promote physical activity among adults ages 40 and older, such as providing sufficient space for physical activity, especially for communities with low levels of physical fitness.