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Physiological responses to exercise on different models of the concept II rowing ergometer
Andrew J Vogler1, Anthony J Rice, Robert T Withers
1Dept of Physiology, Australian Institute of Sport, Canberra, ACT, Australia.
International Journal of Sports Physiology and Performance
|January 28, 2009
Summary
The Concept II model D (IID) rowing ergometer yields nearly identical physiological responses to the older model C (IIC). Results from either ergometer can be directly compared for rowing performance testing.
Area of Science:
- Exercise Physiology
- Biomechanics
- Sports Science
Background:
- The Concept II model C (IIC) rowing ergometer, a standard in performance assessment, was succeeded by the Concept II model D (IID).
- Design modifications in the IID ergometer raised questions about potential alterations in resistance characteristics and rowing technique.
- These potential changes could impact the comparability of ergometer test results between the two models.
Purpose of the Study:
- To evaluate and compare the physiological responses of national-level rowers using the Concept II model C (IIC) and Concept II model D (IID) rowing ergometers.
- To determine if the updated IID ergometer produces comparable results to the IIC ergometer during submaximal and maximal rowing tests.
- To assess the influence of ergometer model on key physiological markers and performance metrics.
Main Methods:
- Eight national-level rowers participated in the study.
- Participants completed both submaximal progressive incremental tests and maximal-performance time trials on both IIC and IID ergometers.
- Tests were conducted with a 48-72 hour separation, using standardized drag-factor settings to ensure comparability.
Main Results:
- No significant differences were observed in power output, oxygen consumption, rowing economy, heart rate, stroke rate, or rating of perceived exertion between the IIC and IID ergometers.
- Blood lactate thresholds (LT1 and LT2) were also found to be similar between the two ergometer models.
- A minor, statistically significant difference in blood lactate concentration at LT (0.2 mmol/L) was noted, but deemed clinically insignificant.
Conclusions:
- The physiological responses elicited by rowing on the Concept II model C and Concept II model D ergometers are virtually identical.
- Performance testing results obtained from either the IIC or IID ergometer can be directly compared without significant concern for ergometer-induced variability.
- The updated IID ergometer maintains the validity of established rowing performance metrics from the IIC model.
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