The article investigates whether mean concentric linear velocity (MCLV), measured with an integrated linear encoder, can serve as a valid and reliable metric for quantifying load and individualising flywheel training prescriptions. Twenty‑five physically active male postgraduate students performed progressive inertial load tests (0.047–0.321 kg·m²) during flywheel squats across two sessions. MCLV and a 0–10 rating of perceived exertion (RPE) were recorded for each load. Results showed excellent inter‑session reliability for both MCLV (ICC = 0.91) and RPE (ICC = 0.93). Strong linear relationships were found between inertial load and MCLV (R² ≈ 0.80), load and RPE (R² ≈ 0.87), and MCLV and RPE (R² ≈ 0.71). Regression equations were provided to predict MCLV from load and RPE from both load and MCLV. The authors conclude that MCLV is a valid intensity marker for flywheel training, while RPE offers a practical alternative when velocity measurement tools are unavailable. Limitations include the male‑only, postgraduate sample and the lack of a flywheel‑specific RPE scale, prompting calls for broader population studies and validation of eccentric velocity measures.
Topics
MCLV as a Valid Load Indicator for Flywheel Squat
Demonstrates that mean concentric linear velocity decreases with increasing inertial load and reliably predicts training intensity.
Reliability of MCLV and RPE Measurements Across Sessions
Reports intraclass correlation coefficients above 0.9 for both MCLV and RPE, indicating excellent test‑retest reliability.
Load–Velocity and Load–RPE Relationships in Flywheel Training
Presents strong linear regressions linking inertial load to MCLV (R²≈0.80) and to RPE (R²≈0.87), and linking MCLV to RPE (R²≈0.71).
Practical Use of RPE When Linear Encoders Are Unavailable
Highlights RPE as a reliable, low‑tech alternative for monitoring flywheel intensity, especially in applied settings lacking velocity measurement devices.
Methodology: Progressive Inertial Load Testing with Integrated Linear Encoder
Details the experimental protocol, including participant characteristics, load progression, familiarisation sessions, and data acquisition using a flywheel device equipped with a linear encoder.
Limitations and Future Research Directions
Acknowledges the male‑only, postgraduate sample, absence of a flywheel‑specific RPE scale, and lack of eccentric velocity data, recommending broader population studies and validation work.