Figure 1

Distribution of AIP quartiles among the groups. PA, Physical Activity. PA1 group, non-exercise group, no extra physical activity except daily life and work activities; PA2 group, occasional exercise group, physical activity <three times a week and <30 min each session or <90 min of physical activity a week; PA3 group, frequent exercise group, physical activity >three a week and >30 min each session or >90 min a week. AIP, Atherogenic Index of Plasma Q1, 1st quartile, n = 6959, AIP(−0.19~−0.13); Q2, 2^nd quartile, n = 6956, AIP(−0.13~0.07); Q3, 3^rd quartile, n = 6955, AIP(0.07~0.30); Q4, 4^th quartile, n = 6957, AIP(0.30~1.72).