Fig. 1From: Can the WHO ‘s recommendations of physical activity volume decrease the risk of heart disease in middle and older aged Chinese People: the evidence from a seven year longitudinal surveyDistribution of participants with different physical activity levels, purposes, and ages. Part A: Distribution of participants with different physical activity levels and ages: Insufficient PAV: the physical activity volume does not meet the WHO’s recommendations; PAVMW: the physical activity volume meets the WHO’s recommendations. Part B: Distribution of participants meeting the WHO’s recommendations with different physical activity purposes and ages; JDs: job demands; EE: entertainment or exercise; JDs&EE: job demands and entertainment or exerciseBack to article page