Korean Journal of Community Nutrition

Myung Ju Lee

2 Articles

[English]
Thermic Effect of Food, Macronutrient Oxidation Rate and Satiety of Medium-chain Triglyceride: Hee Ryoung Son, Myung Ju Lee, Eun Kyung Kim; Korean J Community Nutr 2015;20(6):468-478. Published online December 31, 2015; DOI: https://doi.org/10.5720/kjcn.2015.20.6.468

Abstract PDF PubReader: OBJECTIVES
The objective of this study was to evaluate the thermic effects, the macronutrient oxidation rates and the satiety of medium-chain triglycerides (MCT).
METHODS
The thermic effects of two meals containing MCT or long-chain triglycerides (LCT) were compared in ten healthy men (mean age 24.4 +/- 2.9 years). Energy content of the meal was 30% of resting metabolic rate of each subject. Metabolic rate and macronutrient oxidation rate were measured before the meals and for 6 hours after the meals by indirect calorimetry. Satiety was estimated by using visual analogue scales (VAS) at 8 times (before the meal and for 6 hours after meal).
RESULTS
Total thermic effect of MCT meal (42.8 kcal, 8.0% of energy intake) was significantly higher than that (26.8 kcal, 5.1% of energy intake) of the LCT meal. Mean postprandial oxygen consumption was also significantly different between the two types of meals (MCT meal: 0.29 +/- 0.35 L/min, LCT meal: 0.28 +/- 0.27 L/min). There were no significant differences in total postprandial carbohydrate and fat oxidation rates between the two meals. However, from 30 to 120 minutes after consumption of meals, the fat oxidation rate of MCT meal was significantly higher than that of the LCT meal. Comparison of satiety values (hunger, fullness and appetite) between the two meals showed that MCT meal maintained satiety for a longer time than the LCT meal.
CONCLUSIONS
This study showed the possibility that long-term substitution of MCT for LCT would produce weight loss if energy intake remained constant.

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[English]
Thermic Effect of Food, Macronutrient Oxidation Rate and Satiety of High-fat Meals with Butter and Sesame Oil on Healthy Adults: Myung Ju Lee, A Fahmy Arif Tsani, Eun Kyung Kim; Korean J Community Nutr 2012;17(2):215-225. Published online April 30, 2012; DOI: https://doi.org/10.5720/kjcn.2012.17.2.215

The purpose of this study was to measure and investigate the acute effects of two fatty meals (high-SFA & high-PUFA) on post-prandial thermic effect, substrate oxidation, and satiety. Eight healthy adults (four males and four females) aged 19-22 years were assigned to consume two isocaloric meals: high in saturated fatty acids from butter and high in polyunsaturated fatty acids from sesame oil. Indirect calorimetry was used to measure resting energy expenditure (REE), post-prandial energy expenditure for five hours, and substrate oxidation. Satiety of the subjects after meals was estimated by using visual analogue scales (VAS). Five hours thermic effect of food (TEF) was not significantly different between butter meal (6.5% of energy intake) and sesame oil meal (7.3% of energy intake), but, the TEF of butter meal reached the peak point at 150 min and decreased more rapidly arriving to REE in 270 min. On the other hand, TEF of sesame oil meal reached the peak at 90 min and decreased slower than butter meal (still higher than REE at 300 min). No significant differences in substrate oxidation rates were found between the two meals. Post-prandial fat oxidation rates increased significantly after the consumption of both butter and sesame oil meal than that of the pre-prandial state. Satiety values (hunger, fullness, and appetite) were similar among the meals, but recovery of hunger and fullness to the pre-prandial state was faster in butter meal than that of the sesame oil meal.

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Thermic Effect of Food, Macronutrient Oxidation Rate and Satiety of Medium-chain Triglyceride
Hee-Ryoung Son, Myung-Ju Lee, Eun-Kyung Kim
Korean Journal of Community Nutrition.2015; 20(6): 468. CrossRef

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