Physical activity intensity is a more important driver than quantity for reducing mortality risk and promoting longevity.

noli's read

Professor Stuart Phillips relies here on large-scale observational research, including cohort analyses such as the UK Biobank study, which demonstrate a strong correlation between vigorous physical activity and a reduction in all-cause mortality. It is scientifically established that intensity improves cardiovascular and metabolic health more effectively than lower intensities at equal volume (evidence via prospective observational studies). The idea that 'intensity matters more than quantity' is a pragmatic interpretation aimed at optimizing training time, although research often emphasizes that total volume remains a determining factor for overall health. It is not necessary to oppose the two, as the literature suggests a synergy between intensity and volume. This advice is therefore based on robust data, but it simplifies a dose-response relationship that remains multifactorial. The use of percentile curves allows for an interesting personalization of effort, aligned with current public health recommendations.

the sources

1. 1Stamatakis E et al. 2022
2. 2Stamatakis E et al. 2023
3. 3Milanović Z, Sporiš G, Weston M 2015