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A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
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Incremental test protocol, recovery mode and the individual anaerobic threshold
T M McLellan1, K S Cheung, I Jacobs
1Environmental Physiology Section, Defence and Civil Institute of Environmental Medicine, Downsview, Ontario, Canada.
International Journal of Sports Medicine
|April 1, 1991
Summary
Active recovery does not impact individual anaerobic threshold (IAT) determination. However, maximal incremental tests yield a higher IAT compared to submaximal tests, indicating a greater power output and oxygen consumption at this threshold.
Area of Science:
- Exercise Physiology
- Sports Science
- Metabolic Research
Background:
- The individual anaerobic threshold (IAT) signifies the highest metabolic rate for steady-state blood lactate during exercise.
- Accurate IAT determination is crucial for optimizing training intensity and performance.
Purpose of the Study:
- To investigate the influence of active versus passive recovery on IAT measurement.
- To compare IAT outcomes between submaximal and maximal incremental exercise tests.
Main Methods:
- Seven male participants completed four incremental cycle tests: two submaximal and two maximal.
- Blood lactate levels were monitored during exercise and a 12-minute recovery period (active or passive).
- IAT was calculated for each of the four test conditions (submaximal-passive, maximal-passive, submaximal-active, maximal-active).
Main Results:
- Active recovery did not significantly alter IAT calculations.
- IAT was determined at a significantly higher power output and %VO2max (71%) following maximal incremental tests compared to submaximal tests (61%).
- Lactate concentrations at IAT varied between protocols, with higher values observed during maximal tests.
Conclusions:
- Active recovery is a viable option for IAT assessment without compromising accuracy.
- Maximal incremental exercise tests provide a more robust measure of IAT, reflecting higher physiological capacities.
- Understanding these differences is key for precise exercise prescription and performance analysis.
