High-Intensity Intermittent Exercise Increases Fat Oxidation Rate and Reduces Postprandial Triglyceride
Tsung-Jen Yang1, Ching-Lin Wu2, Chih-Hui Chiu3
1Department of Physical Education, National Taiwan Normal University, Taipei 106, Taiwan. andy32437@yahoo.com.tw.
Nutrients
|April 17, 2018
Summary
Acute high-intensity intermittent exercise (HIIE) significantly reduces postprandial triglyceride (TG) levels and enhances fat oxidation compared to moderate-intensity continuous exercise (MICE). This exercise strategy may improve metabolic health after a high-fat meal.
Area of Science:
- Exercise Physiology
- Metabolic Health
- Nutritional Biochemistry
Background:
- Investigated the impact of acute barehanded whole body high-intensity intermittent exercise (HIIE) versus moderate-intensity continuous exercise (MICE) on postprandial triglyceride (TG) concentrations.
- Compared exercise interventions with the same energy expenditure to isolate the effects of exercise intensity and type.
Purpose of the Study:
- To determine the effect of HIIE and MICE on postprandial TG concentrations and fat oxidation rates.
- To assess the metabolic response following a high-fat test meal after different exercise protocols.
Main Methods:
- Nine healthy males participated in three randomized trials: HIIE, MICE, and a control (CON).
- Participants consumed a high-fat test meal 12 hours after each intervention, with blood samples and respiratory exchange ratio monitored for 4 hours post-meal.
Main Results:
- HIIE significantly increased the area under the curve for postprandial fat oxidation compared to MICE and CON.
- HIIE resulted in significantly lower postprandial TG concentrations at 2 and 4 hours post-meal compared to MICE and CON.
- HIIE also showed a higher area under the curve for postprandial TG concentration compared to MICE and CON.
Conclusions:
- Acute barehanded whole body HIIE is effective in significantly lowering postprandial TG concentrations.
- HIIE may enhance postprandial fat oxidation rates, contributing to improved lipid metabolism.
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