Capacity of the cardiovascular and respiratory systems to support sustained physical activity; field proxies and directly measured oxygen uptake remain distinct.
Definition revised September 17, 2026 · Mike Ye × Ella
Capacity of the cardiovascular and respiratory systems to support sustained physical activity; field proxies and directly measured oxygen uptake remain distinct.
TrailGenic records task-specific heart rate, pace, duration, and recovery context. These observations can motivate a fitness hypothesis but do not independently measure VO₂max or quantify a reduction in mortality risk. External research associations must not be presented as outcomes established by this dataset.
Keep context, behavior, recorded response, follow-up, and interpretation distinguishable. Ella examines longitudinal patterns and alternatives; a decision rule remains dated and revisable.
Shared terminology · Measurement limits · Methodology
Linked records may use earlier terminology; the evidence boundaries above govern this definition.