57: Wearable Device Physical Activity Equivalence and Health Outcomes
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57: Wearable Device Physical Activity Equivalence and Health Outcomes
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This episode does a deep dive into an article that examines the health equivalence of different physical activity intensities—light, moderate, and vigorous—against outcomes like mortality, cancer, and cardiometabolic disease. Using accelerometer data from over 73,000 UK Biobank participants, the study objectively quantifies how many minutes of moderate or light activity are needed to equal one minute of vigorous activity. The core finding is a substantial deviation from the current public health convention of a 1:2 ratio (one minute of vigorous equals two minutes of moderate), which was based on less precise self-reported data.
Biswas, R.K., Ahmadi, M.N., Bauman, A. et al. Wearable device-based health equivalence of different physical activity intensities against mortality, cardiometabolic disease, and cancer. Nat Commun 16, 8315 (2025). https://doi.org/10.1038/s41467-025-63475-2
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