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Updated: Jun 25, 2026

Doppler Ultrasound-Based Leg Blood Flow Assessment During Single-Leg Knee-Extensor Exercise in an Uncontrolled Setting
Published on: December 15, 2023
Jill Borresen1, Michael I Lambert
1University of Cape Town, Newlands, South Africa.
The session rating of perceived exertion (RPE) method offers a reliable way to measure training load, comparable to heart rate-based methods like training impulse (TRIMP) and summated heart rate zones (SHRZ). Accuracy may decrease with very high or low intensity training.
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