[논문]가속도계와 신체활동일기를 이용한 초등학생 축구선수 남녀의 신체활동수준, 신체활동 패턴 및 에너지소비량 비교

안해선; 최수지; 이모란; 이정숙; 김은경

doi:10.5720/kjcn.2017.22.6.529

가속도계와 신체활동일기를 이용한 초등학생 축구선수 남녀의 신체활동수준, 신체활동 패턴 및 에너지소비량 비교
Comparison of Physical Activity Level, Physical Activity Pattern and Energy Expenditure in Male and Female Elementary School Soccer Players using Accelerometer and Physical Activity Diary 원문보기

대한지역사회영양학회지 = Korean journal of community nutrition, v.22 no.6, 2017년, pp.529 - 542

안해선 (강릉원주대학교 식품영양학과) , 최수지 (강릉원주대학교 식품영양학과) , 이모란 (강릉원주대학교 식품영양학과) , 이정숙 (강릉원주대학교 식품영양학과) , 김은경 (강릉원주대학교 식품영양학과)

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Objectives: The purpose of this study was to compare the physical activity level (PAL), the physical activity pattern and the energy expenditure in male and female elementary school soccer players using the accelerometer and the physical activity diary. Methods: Twenty-five (male 11, female 14) elementary school soccer players (9-12 years) participated in this study. During their daily activities, they wore an accelerometer for seven days (five weekdays and two weekend days) and completed the physical activity diary for three days (two weekdays and one weekend day). PAL was calculated by using the physical activity diary and three equations (Pate Preschool, Freedson Children, and Freedson) were used to calculate the intensity of physical activity and energy expenditure from the counts of accelerometer. Results: The average of physical activity by day of the week, CPM (Counts Per Minute) and METs (Metabolic Equivalents) were significantly higher in males ($723.3{\pm}149.2CPM$, $2.07{\pm}0.18METs$) compared to females ($505.6{\pm}119.9CPM$, $1.79{\pm}0.20METs$), but there was no significant difference in PAEE (Physical Activity Energy Expenditure) between the two groups (males: $15.5{\pm}9.1kcal/day$, females: $11.5{\pm}6.0kcal/day$). During weekdays, physical activity intensity was significantly higher in males compared to females at lunch time and training time than at other times. In both genders, the PAL was higher during weekdays (males 1.98, females 1.89) compared to weekend (males 1.62, females 1.61) (p<0.05). Conclusions: Our study observations suggest the necessity to develop an accelerometer equation for accurately evaluating the physical activity of elementary school athletes.

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핵심어	질문	논문에서 추출한 답변
	자가 기록 방법의 장점은?	신체활동을 평가하는 방법에는 질문지나 신체활동일기와 같은 자가 기록(self-reporting) 방법 및 보행계수계와 가속도계가 있다[11]. 자가 기록 방법의 경우, 대규모 대상자의 자료를 저비용으로 얻을 수 있을 뿐만 아니라[12-13] 고가의 측정 도구 없이도 시간별로 활동내용을 간편하게 기록할 수 있다는 장점 때문에 신체활동 평가 연구에 자주 이용되어왔다[14].
	신체활동을 평가하는 방법에는 무엇이 있는가?	신체활동을 평가하는 방법에는 질문지나 신체활동일기와 같은 자가 기록(self-reporting) 방법 및 보행계수계와 가속도계가 있다[11]. 자가 기록 방법의 경우, 대규모 대상자의 자료를 저비용으로 얻을 수 있을 뿐만 아니라[12-13] 고가의 측정 도구 없이도 시간별로 활동내용을 간편하게 기록할 수 있다는 장점 때문에 신체활동 평가 연구에 자주 이용되어왔다[14].
	만보기의 단점을 보완하기 위해 개발된 것은?	‘만보기’로 널리 알려져 있는 보행계수계는 상대적으로 낮은 비용으로 신체활동을 측정할 수 있으나 보행수만 측정할 뿐 신체활동의 강도나 패턴을 측정할 수 없다는 단점이 있다. 최근 이러한 문제점을 보완한 가속도계형 보수계가 개발되면서 신체활동 측정의 정확성이 상대적으로 높아졌고[11], 신체활동 강도 및 패턴을 측정하는 것이 가능해졌다[15].

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