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Rating perceived exertion during short duration, very high intensity cycle exercise
Randall F Gearhart1, M Daniel Becque, Chad M Palm
1Department of Sport Sciences, Ashland University, OH 44805, USA. rgearhar@ashland.edu
Perceptual and Motor Skills
|August 3, 2005
Summary
This study found that higher resistance during intense cycling exercise leads to higher ratings of perceived exertion (RPE). Force production, not total work, appears to be the main factor influencing perceived effort during exercise.
Area of Science:
- Exercise Physiology
- Sports Science
- Human Performance
Background:
- Ratings of Perceived Exertion (RPE) are crucial for understanding exercise intensity.
- Previous research has explored RPE in various exercise modalities, but the specific role of resistance versus work in high-intensity cycling requires further investigation.
Purpose of the Study:
- To compare undifferentiated RPE during high-intensity cycling with varying resistance levels.
- To determine if instantaneous force production or summed work is a primary determinant of RPE in this context.
Main Methods:
- Thirty recreationally trained males performed 30-second high-intensity cycle exercises under high and low resistance conditions.
- Resistance was adjusted to equate total work, with low resistance requiring a higher pedal rate.
- RPE was measured at multiple time points during each exercise bout using the Borg 15-category scale.
Main Results:
- RPE was significantly higher during the high-resistance exercise compared to the low-resistance exercise at all measured intervals (p=.005).
- RPE increased proportionally with greater resistance and higher force production.
- The findings align with existing data from aerobic and resistance exercise studies.
Conclusions:
- Instantaneous force production, rather than summed work, is a key determinant of RPE during high-intensity cycle exercise.
- These results support theoretical models of effort sense, suggesting increased motor outflow contributes to a greater sense of effort with higher forces.