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KNHANES Actigraph Raw Data Processing
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가속도계로 측정한 국민건강영양조사 신체활동 자료 처리방법과 활용

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Type
Academic journal
Author
Journal
Korean Society For Measurement And Evaluation In Physical Education And Sports Science The Korean Journal of Measurement and Evaluation in Physical Education and Sports Science Vol.20 No.2 KCI Accredited Journals
Published
2018.6
Pages
83 - 94 (12page)

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KNHANES Actigraph Raw Data Processing
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This study was purposed to introduce raw data processing of accelerometer-measured physical activity data as a part of the 2014 Korea National Health and Nutrition Examination Survey, and to demonstrate its application by analysing moderate- to vigorous-intensity physical activity (MVPA) in Korean adults. Accelerometer-measured physical activity raw data processing includes selection and application of epoch length, MVPA intensity count cutoff point, wear/non-wear time algorithm, minimum wear time on a day, and missing data imputation. This study selected 1-minute epoch, Troiano (2008)’s intensity cutoff point (MPA≥ 2,020cpm, VPA≥5,999cpm) and non-wear time algorithm (60 or more minutes of 0cpm, with allowance of <100cpm up to 2 minutes), and 10 or more hours of wear time on a day. Missing day-level data were replaced by MVN multiple imputation using Stata9.2 (StataCorp, USA) to produce 100 complete data set. Age- and sex-adjusted weekly MVPA was 96.87 minutes, and the adherence rate to the WHO aerobic physical activity guideline was 21.29%, which was substantially lower than the adherence rate estimated by GPAQ. This discrepancy suggests the need for parallel use of objective and subjective measures of physical activity in KNHANES as a national-level surveillance.
#epoch #자료요약주기 #착용시간 #Actigraph #결측값 #KNHANES #wear time #신체활동 강도수 절단점 #intensity count cutoff point #missing data

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References (26)

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보건복지부 / 2013 / 한국인을 위한 신체활동 지침서 / 보건복지부 google schola 오지연 / 2007 / 한국어판 단문형 국제신처활동설문(IPAQ)의 신뢰도와 타당도 / Korean Journal of Family Medicine 28(7):532~541 dbpia 이미영 / 2011 / 객관적 신체활동 검사도구의 타당도 증거와 검증 절차: 체계적 문헌분석 / 한국체육측정평가학회지 13(2):17~37 dbpia 이미영 / 2016 / 가속도계 추정공식과 강도기준치(Cut-point)의 신체활동량 추정오차검증 / 한국체육측정평가학회지 18(1):17~29 dbpia 질병관리본부 / 2013 / 국제신체활동설문지(Global Physical Activity Quesionnaire) 한글판 개발 및 신뢰도·타당도 평가 google schola

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