High-intensity interval training
High-intensity interval training (HIIT), also known as high-intensity intermittent exercise (HIIE) or sprint interval training (SIT), is a form of interval training, a cardiovascular exercise strategy alternating short periods of intense anaerobic exercise with less intense recovery periods, until too exhausted to continue.
Pronunciation
- High-intensity interval training: /haɪ ɪnˈtɛnsɪti ˈɪntərvəl ˈtreɪnɪŋ/
Etymology
The term "High-intensity interval training" is a combination of the words "high-intensity", referring to the level of exertion, "interval", referring to the periods of rest and exercise, and "training", referring to the practice of physical activity to improve fitness.
Description
HIIT workouts provide improved athletic capacity and condition as well as improved glucose metabolism. Compared with other regimens, HIIT may not be as effective for treating hyperlipidemia and obesity, or improving muscle and bone mass. Some researchers also note that HIIT requires "an extremely high level of subject motivation" and question whether the general population could safely or practically tolerate the extreme nature of the exercise regimen.
Related Terms
- Interval training
- Anaerobic exercise
- Cardiovascular exercise
- Glucose metabolism
- Hyperlipidemia
- Obesity
See Also
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