Key Points Current physical activity guidelines for adults emphasize 150 minutes per week of moderate to vigorous activity, but health benefits begin with smaller increases in activity and rise continuously. Fixed thresholds are useful for communication but may oversimplify continuous dose-response relationships and limit more nuanced public health messaging. Surveillance and guidelines could adopt graded or continuous risk-based metrics to better reflect evidence and motivate all individuals. Incorporating device-based measurements, including step counts and risk gradients, can refine guidance on intensity, patterning, and total activity.
Jean-Philippe Chaput (Thu,) studied this question.