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Park JH, Ishikawa-Takata K, Lee SJ, et al. Association between daily step counts and physical activity level among Korean elementary schoolchildren. J Exerc Nutrition Biochem. 2016;20(3):51-55doi: 10.20463/jenb.2016.09.20.3.8.
Park, J. H., Ishikawa-Takata, K., Lee, S. J., Kim, E. K., Lim, K. W., Kim, H. R., Lee, I. S., & Tanaka, S. (2016). Association between daily step counts and physical activity level among Korean elementary schoolchildren. Journal of exercise nutrition & biochemistry, 20(3), 51-55. https://doi.org/10.20463/jenb.2016.09.20.3.8
Park, Jong-hoon, et al. "Association between daily step counts and physical activity level among Korean elementary schoolchildren." Journal of exercise nutrition & biochemistry vol. 20,3 (2016): 51-55. doi: https://doi.org/10.20463/jenb.2016.09.20.3.8
Park JH, Ishikawa-Takata K, Lee SJ, Kim EK, Lim KW, Kim HR, Lee IS, Tanaka S. Association between daily step counts and physical activity level among Korean elementary schoolchildren. J Exerc Nutrition Biochem. 2016 Sep;20(3):51-55. doi: 10.20463/jenb.2016.09.20.3.8. Epub 2016 Sep 30. PMID: 27757388; PMCID: PMC5067418.
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J Exerc Nutrition Biochem. 2016 Sep;20(3):51-55. doi: 10.20463/jenb.2016.09.20.3.8. Epub 2016 Sep 30.

Association between daily step counts and physical activity level among Korean elementary schoolchildren.

Journal of exercise nutrition & biochemistry

Jong-hoon Park, Kazuko Ishikawa-Takata, Sang-jik Lee, Eun-kyung Kim, Ki-won Lim, Hyung-ryul Kim, In-Sook Lee, Shigeho Tanaka

Affiliations

  1. Department of Physical Education, Korea University, Seoul Republic of Korea.
  2. Department of Nutritional Education, National Institute of Health and Nutrition, Tokyo Japan.
  3. Division of Physical Education, Uiduk University, Gyeongju Republic of Korea.
  4. Department of Food and Nutrition, Gangneung-Wonju National University, Gangneung Republic of Korea.
  5. Department of Physical Education, Konkuk University, Seoul Republic of Korea.

PMID: 27757388 PMCID: PMC5067418 DOI: 10.20463/jenb.2016.09.20.3.8

Abstract

PURPOSE: The purpose of the current study was to investigate steps per day (steps/d) and physical activity level (PAL) in Korean elementary school children having normal weight (normal-weight). We also clarified whether a gender difference exited between steps/d and PAL.

METHODS: Children aged 9 to 12 y were recruited from two elementary schools located in different urban districts in Korea. The present study included 33 Korean children, of which 18 were normal-weight boys and 15 were normal-weight girls. During the same 1 week study period under free-living conditions the total energy expenditure (TEE) and step counts were estimated using the doubly labeled water (DLW) method and an accelerometer, respectively. We calculated PAL as the TEE/ resting metabolic rate.

RESULTS: The range of PAL was 1.25 - 1.93 with a mean value of 1.57. None of the variables of energy expenditure was significantly different by sex. However, steps/d were significantly higher in boys than in girls. When adjusting regression analysis by gender, steps/ d were positively associated with PAL among all subjects (r = 0.56, P < 0.01). Furthermore, steps/d were positively associated with PAL in boys (r = 0.68, P < 0.01), but not in girls (r = 0.27, P = 0.34).

CONCLUSION: Our results suggest that locomotive activity may be the main contributor to the individual PAL differences for elementary school boys, while non-locomotive activity may be the main contributor for elementary school girls.

Keywords: Children; PAL; Step counts

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