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Updated: Feb 15, 2026

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
Published on: February 22, 2022
Physiological, Perceptual, and Affective Responses to Six High-Intensity Interval Training Protocols
Lucio Follador1, Ragami C Alves1, Sandro Dos S Ferreira1
11 Department of Physical Education, 28122 Federal University of Paraná , Curitiba, Paraná, Brazil.
Different high-intensity interval training (HIIT) and sprint interval training (SIT) protocols impact psychophysiological responses differently. Some intense protocols, like Tabata and VO2max running, are unsuitable for individuals with lower fitness levels.
Area of Science:
- Exercise Physiology
- Sports Science
- Human Performance
Background:
- High-intensity interval training (HIIT) and sprint interval training (SIT) are popular exercise modalities.
- Understanding the psychophysiological responses to various HIIT and SIT protocols is crucial for effective training prescription.
- Previous research has not comprehensively compared the effects of diverse HIIT and SIT protocols on physiological and affective responses.
Purpose of the Study:
- To compare the psychophysiological responses to different cycling and running high-intensity interval training (HIIT) and sprint interval training (SIT) protocols in moderately active young men.
- To determine which specific HIIT and SIT protocols elicit the greatest physiological and affective responses.
- To assess the suitability of various protocols for individuals with different fitness levels.
Main Methods:
- Fourteen moderately active young men participated in a randomized controlled trial.
- Participants completed six exercise protocols: three on a cycle ergometer (SIT, Tabata, HIIT) and three on a treadmill (HIIT).
- Physiological measures (oxygen uptake, heart rate, rating of perceived exertion) and affective responses were recorded during and after each protocol.
Main Results:
- The Tabata protocol resulted in the highest oxygen uptake and rating of perceived exertion, alongside the least pleasant affective response during cycling.
- The VO2max running protocol elicited the highest oxygen uptake and rating of perceived exertion, with the lowest mean affective response during running.
- Sprint interval training (SIT) and certain HIIT protocols demonstrated limited applicability for individuals with lower fitness levels.
Conclusions:
- Different HIIT and SIT protocols induce varying psychophysiological responses.
- The Tabata and VO2max running protocols are highly demanding and may not be suitable for all individuals.
- Exercise prescription should consider individual fitness levels when selecting HIIT and SIT protocols to optimize training outcomes and adherence.
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