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Published on: February 2, 2019
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Energy balance dynamics during short-term high-intensity functional training.
Matthew M Schubert1,1, Elyse A Palumbo1,1
1Department of Kinesiology, California State University, San Marcos, 333 S. Twin Oaks Valley Road, San Marcos, CA 92096-0001, USA.
Summary
High-intensity functional training like CrossFit significantly boosts energy expenditure, potentially aiding weight loss. This study found CrossFit sessions contribute substantially to daily calorie burn, leading to an energy deficit.
Area of Science:
- Exercise Physiology
- Sports Science
- Metabolic Health
Background:
- CrossFit is a popular high-intensity functional training program.
- Existing research highlights CrossFit's health benefits but lacks data on energy balance.
- Understanding energy expenditure and intake is crucial for managing body composition.
Purpose of the Study:
- To investigate the energy balance of individuals participating in CrossFit for one week.
- To quantify CrossFit energy expenditure (CF EE) and its contribution to total energy expenditure (TEE).
- To determine if CrossFit training results in an energy deficit.
Main Methods:
- 21 participants with CrossFit experience underwent body composition assessment before and after one week of training.
- Total energy expenditure (TEE), activity energy expenditure, and CF EE were monitored using ActiHeart devices.
- Energy intake was calculated using TEE and changes in body composition.
Main Results:
- CrossFit energy expenditure averaged 605 kcal per session, totaling 2723 kcal weekly.
- Participants exhibited a significant energy deficit, with TEE (3674 kcal/day) exceeding energy intake (3167 kcal/day).
- CrossFit training accounted for a substantial portion of daily activity energy expenditure.
Conclusions:
- CrossFit training significantly increases energy expenditure.
- The weekly energy expenditure from CrossFit is sufficient to promote clinically meaningful weight loss.
- CrossFit can be a key component of energy balance management for weight control.
Keywords:
contrôle du poidsenergy balanceentraînement fonctionnelfunctional trainingweight managementéquilibre énergétiqueMore Related Videos
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