Journal List > Korean J Community Nutr > v.16(2) > 1038288

Korean J Community Nutr. 2011 Apr;16(2):195-205. Korean.
Published online April 30, 2011.  https://doi.org/10.5720/kjcn.2011.16.2.195
Copyright © 2011 The Korean Society of Community Nutrition
The Analysis of Activity Energy, Total Energy, and Estimated Energy Expenditures in 5th and 6th Grade Primary School Students
Mi-Jeong Kim, Hyeon-Ju Na,1 and Youngnam Kim2
Sinmuk Primary School, Kyeunggi Do, Korea.
1Imae High School, Kyeunggi Do, Korea.
2Department of Home Economics Education, Korea National University of Education, Chungbuk, Korea.

Corresponding author: Youngnam Kim, Department of Home Economics Education, Korea National University of Education, Darak-ri, Gangnae-myeon, Chungwon-gun 363-791, Chungbuk, Korea. Tel: (043) 230-3709, Fax: (043) 231-4087, Email: youngnam@knue.ac.kr
Received December 20, 2010; Revised January 28, 2011; Accepted March 31, 2011.

Abstract

This study was conducted to investigate the time spent, activity coefficient and energy expenditure on 7 different types of activity. Total of 386 5th and 6th grade primary school boys and girls in Seoul participated in this study. The participants spent 8 hrs for rest, 4 hrs for out of school study, 3 hrs for leisure, 1 hr 45 mins. for hygiene, 1 hr for commute, and 15 mins. for house choir activity in the day of 6 class hours. The average activity coefficient of 1 day for boys and girls were 1.69 and 1.64, respectively. The TEEs were 2,382 kcal and 2,050 kcal for boys and girls, respectively. The energy cost for study related activity (in school and study activities) was 40% of the TEE, and for rest 20%, for commute 9%, and for hygiene 10% of the TEE. The energy cost for house choir was only about 2% of TEE. The 91.2% participant's EER was higher than the EER shown in the table of 2010 DRI for Koreans. When the participant's EER was compared with the energy allowance calculated by the method in 2000 RDA for Korean, 81.6% was in the range of ± 5%, and the correlation coefficients between the 2 values were 0.981 for boys and 0.978 for girls, which means high agreements.

Keywords: activity energy; activity coefficient; energy allowance; total energy expenditure; estimated energy requirement

Figures


Fig. 1
Relationship between recommended energy intake (2000) and estimated energy requirement (2010) of the boy and girls.
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Tables


Table 1
General characteristics of the subjects
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Table 2
Physique of the subjects
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Table 3
Activity time & coefficient, and energy expenditure by gender in 7 different activities
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Table 4
Results of statistically significant difference evaluation of activity time, activity coefficient, and energy expenditure by the subject's grade, gender and obesity
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Table 5
Distribution of total energy expenditure (TEE) of the subjects by the calculation formula in DRI for Koreans (first revision, 2010)
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Table 6
Percent difference between the EER in the table of DRI for Koreans (2010) and EER of the subjects
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Table 7
The difference between the recommended energy intakes by the estimation methods in RDA for Koreans (7th revision, 2000) and DRI for Koreans (first revision, 2010)
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Notes

This work was supported by a grant from Korea National University of Education (2010)

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