Relationship of frequency of participation in a physical checkup and physical fitness in middle-aged and elderly people: the Yakumo study

An annual physical checkup is provided as part of the long-term Yakumo study. The checkup is voluntary and there is variation in the frequency of participation. The aim of this study was to examine relationship of physical fitness with frequency of participation in this checkup. The subjects had all attended at least one annual physical checkup from 2006 to 2018. Data from 1,804 initial checkups were used for analysis. At the checkups, age, gender, height, weight, body mass index (BMI), and bone mineral density (BMD) were recorded, and physical activity was measured. The average number of physical checkups per participant for 13 years was 2.4 (1–13). Daily exercise habits were found to be significantly associated with higher participation in physical checkups. Furthermore, between groups with low (1–5 times
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