情報処理学会 第78回全国大会講演要旨

To improve our quality of life, we need extend our healthy life expectancy (HALE) close to our average life span. Although reduction in daily physical activity has been proposed as a major cause that shortens HALE, convincing evidence for their association is lacking. In a physiological big data project named Allostatic State Mapping by Ambulatory ECG Repository (ALLSTAR), we developed a large database of 24-hr physical activities in 19,345 men (age, 65 ± 17 yr) and 23,985 women (67 ± 17 yr) who underwent Holter accelerometer and electrocardiogram monitoring in all over Japan. We examined if regional difference in physical activity is associated with the inter-prefecture ranking of HALE reported by the Japanese Ministry of Health, Labour and Welfare in 2013. Analysis of covariance adjusted for the effect of age revealed that the level of physical activity decreased progressively in the order of prefectures divided into upper, middle, and lower tertiles of HALE in both men and women (P <0.001 for both). When the subjects were divided into every 10s yr of age, the correlation between the rankings of physical activity and HALE was observed in 30s to 60s for men and in 50s to 60s for women. Our observations are consistent with the putative association between the level of daily physical activity and the length of HALE.