British Journal of Nutrition

Full Papers

Behaviour, Appetite and Obesity

Comparison of physical activity energy expenditure in Japanese adolescents assessed by EW4800P triaxial accelerometry and the doubly labelled water method

Kazuko Ishikawa-Takataa1 c1, Kayoko Kanekoa2, Kayo Koizumia2 and Chinatsu Itoa3

a1 National Institute of Health and Nutrition, 1-23-1 Toyama, Shinjuku, Tokyo 1628636, Japan

a2 Yokohama National University, 79-1 Tokiwadai, Hodogaya, Yokohama, Kanagawa 2408501, Japan

a3 Akita Nutrition Junior College, 46-1 Sakuramorisawa Shimokitate, Akita City, Akita 0108515, Japan

Abstract

The present study compared the accuracy of triaxial accelerometry and the doubly labelled water (DLW) method for measuring physical activity (PA) in Japanese adolescents. A total of sixty adolescents aged 12–15 years were analysed. The total energy expenditure (TEE) was measured over 7 d by the DLW method and with an EW4800P triaxial accelerometer (Panasonic Corporation). The measured (RMRm) and predicted RMR (RMRp) were 5·7 (sd 0·9) and 6·0 (sd 1·0) MJ/d, respectively. TEE measured by the DLW method and accelerometry using RMRm or RMRp were 11·0 (sd 2·6), 10·3 (sd 1·9), and 10·7 (sd 2·1) MJ/d, respectively. The PA levels (PAL) measured by the DLW method using RMRm or RMRp were 1·97 (sd 0·31) and 1·94 (sd 0·31) in subjects who exercised, and 1·85 (sd 0·27) and 1·74 (sd 0·29) in subjects who did not exercise. The percentage of body fat correlated significantly with the percentage difference between RMRm v. RMRp, TEE, PA energy expenditure (PAEE) and PAL using RMRp, and PAL using RMRm assessed by the DLW method and accelerometry. The present data showed that while accelerometry estimated TEE accurately, it did not provide the precise measurement of PAEE and PAL. The error in accelerometry was attributed to the prediction error of RMR and assessment in exercise.

(Received April 16 2012)

(Revised January 29 2013)

(Accepted January 29 2013)

(Online publication April 02 2013)

Key Words:

  • Junior high school students;
  • Total energy expenditure;
  • Walking step counts;
  • Sports

Correspondence

c1 Corresponding author: K. Ishikawa-Takata, email kazu@nih.go.jp

Footnotes

  Abbreviations: ACCm, measured by accelerometry using measured RMR; ACCp, measured by accelerometry using predicted RMR; DLW, doubly labelled water; DLWm, measured by the doubly-labelled water method using measured RMR; DLWp, measured by the doubly-labelled water method using predicted RMR; TEE, total energy expenditure; MVPA, moderate-to-vigorous physical activity; PA, physical activity; PAEE, physical activity energy expenditure; PAL, physical activity level; r CO2 , rate of CO2 production; RMRm, measured RMR; RMRp, predicted RMR; TEE, total energy expenditure

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