Cardiovascular Drift
The gradual increase in heart rate during prolonged steady-state exercise despite maintaining constant workload intensity.
Full Definition
Cardiovascular drift refers to the progressive increase in heart rate that occurs during sustained exercise at a constant workload, typically observed after 10-15 minutes of continuous activity. This phenomenon results from factors such as increased body temperature, dehydration, and decreased stroke volume. In exercise rehabilitation, understanding cardiovascular drift is important for accurate heart rate monitoring, exercise prescription, and patient safety during prolonged training sessions. It may indicate the need for exercise modifications or rest periods in certain patient populations.
Usage
Usage note: Use specific heart rate values when documenting cardiovascular drift.
In Context
- "Cardiovascular drift was observed during the 30-minute treadmill session, with heart rate increasing from 120 to 135 bpm." — Exercise test report
- "The protocol accounts for cardiovascular drift by adjusting target heart rate ranges during prolonged activities." — Training manual