Temporal changes in personal activity intelligence and mortality : data from the aerobics center longitudinal study

Background Personal activity intelligence (PAI) is a metric developed to simplify a physically active lifestyle for the participants. Regardless of following today's advice for physical activity, a PAI score ≥100 per week at baseline, an increase in PAI score, and a sustained high PAI score over time were found to delay premature cardiovascular disease (CVD) and all-cause mortality in a large population of Norwegians. However, the association between long-term temporal change in PAI and mortality in other populations have not been investigated. Objective To test whether temporal change in PAI is associated with CVD and all-cause mortality in a large population from the United States. Method…