A calculated change in heart rate across a stated session or segment, interpreted with workload and route structure.
Definition revised September 17, 2026 · Mike Ye × Ella
A calculated change in heart rate across a stated session or segment, interpreted with workload and route structure.
TrailGenic’s corrected whole-session drift is descriptive. Ascents, descents, stops, pace, altitude, temperature, and recording methods influence it. Negative drift does not independently certify efficiency, recovery, or adaptation. Any terrain-adjusted version must disclose its calculation and validation limits; adjustment does not isolate true physiology by itself.
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.