Seasonal variation in the distribution of daily stepping in 11-13 year old school children

Paul McCrorie; Elaine Duncan; Malcolm H. Granat; Benedict W. Stansfield

Seasonal variation in the distribution of daily stepping in 11-13 year old school children

Paul McCrorie, Elaine Duncan, Malcolm H. Granat, Benedict W. Stansfield

Research output: Contribution to journal › Article › peer-review

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Abstract

Purpose Seasonality studies in adolescent’s physical activity (PA) tend to report total PA (e.g. steps/day) rather than more specific detail such as steps/hour. This study compared the detailed changes in PA between seasons. Methods Thirty three adolescents (baseline age 12.2 ± 0.3y) wore the activPAL activity monitor for 8 days on two occasions. Results Steps/day were higher in summer (Mdn = 12,879) than winter (Mdn = 10,512), p<.001. Steps/hour were significantly higher in summer compared to winter between 17:00 and 21:00 (p<. 044). No steps/day differences were found between boys and girls at either time point (p>.05), however, boys had significantly higher step counts in summer between ’13:00-14:00’ (p=.023), ’19:00-20:00’ (p=.032) and ‘20:00-21:00’ (p=.023). Conclusion Total steps/day masked sex differences within specific hours of the day, particularly evening times. Detailed daily patterns of PA are required to fully understand differences between sexes and across seasons.

Original language	English
Pages (from-to)	358-371
Number of pages	14
Journal	International Journal of Exercise Science
Volume	8
Issue number	4
Publication status	Published - 2015

Keywords

physical activity
young people
accelerometers
seasons

Documents and Links

McCrorie, P. et al (2015) Seasonal variation in the distribution of daily stepping in 11-13 year old children
This is the final publisher version of an article published in International Journal of Exercise Science. Available at http://digitalcommons.wku.edu/ijes/vol8/iss4/5/ Copyright: International Journal of Exercise Science
Final published version, 475 KB

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title = "Seasonal variation in the distribution of daily stepping in 11-13 year old school children",

abstract = "Purpose Seasonality studies in adolescent{\textquoteright}s physical activity (PA) tend to report total PA (e.g. steps/day) rather than more specific detail such as steps/hour. This study compared the detailed changes in PA between seasons. Methods Thirty three adolescents (baseline age 12.2 ± 0.3y) wore the activPAL activity monitor for 8 days on two occasions. Results Steps/day were higher in summer (Mdn = 12,879) than winter (Mdn = 10,512), p<.001. Steps/hour were significantly higher in summer compared to winter between 17:00 and 21:00 (p<. 044). No steps/day differences were found between boys and girls at either time point (p>.05), however, boys had significantly higher step counts in summer between {\textquoteright}13:00-14:00{\textquoteright} (p=.023), {\textquoteright}19:00-20:00{\textquoteright} (p=.032) and {\textquoteleft}20:00-21:00{\textquoteright} (p=.023). Conclusion Total steps/day masked sex differences within specific hours of the day, particularly evening times. Detailed daily patterns of PA are required to fully understand differences between sexes and across seasons.",

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language = "English",

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journal = "International Journal of Exercise Science",

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T1 - Seasonal variation in the distribution of daily stepping in 11-13 year old school children

AU - McCrorie, Paul

AU - Duncan, Elaine

AU - Granat, Malcolm H.

AU - Stansfield, Benedict W.

PY - 2015

Y1 - 2015

N2 - Purpose Seasonality studies in adolescent’s physical activity (PA) tend to report total PA (e.g. steps/day) rather than more specific detail such as steps/hour. This study compared the detailed changes in PA between seasons. Methods Thirty three adolescents (baseline age 12.2 ± 0.3y) wore the activPAL activity monitor for 8 days on two occasions. Results Steps/day were higher in summer (Mdn = 12,879) than winter (Mdn = 10,512), p<.001. Steps/hour were significantly higher in summer compared to winter between 17:00 and 21:00 (p<. 044). No steps/day differences were found between boys and girls at either time point (p>.05), however, boys had significantly higher step counts in summer between ’13:00-14:00’ (p=.023), ’19:00-20:00’ (p=.032) and ‘20:00-21:00’ (p=.023). Conclusion Total steps/day masked sex differences within specific hours of the day, particularly evening times. Detailed daily patterns of PA are required to fully understand differences between sexes and across seasons.

AB - Purpose Seasonality studies in adolescent’s physical activity (PA) tend to report total PA (e.g. steps/day) rather than more specific detail such as steps/hour. This study compared the detailed changes in PA between seasons. Methods Thirty three adolescents (baseline age 12.2 ± 0.3y) wore the activPAL activity monitor for 8 days on two occasions. Results Steps/day were higher in summer (Mdn = 12,879) than winter (Mdn = 10,512), p<.001. Steps/hour were significantly higher in summer compared to winter between 17:00 and 21:00 (p<. 044). No steps/day differences were found between boys and girls at either time point (p>.05), however, boys had significantly higher step counts in summer between ’13:00-14:00’ (p=.023), ’19:00-20:00’ (p=.032) and ‘20:00-21:00’ (p=.023). Conclusion Total steps/day masked sex differences within specific hours of the day, particularly evening times. Detailed daily patterns of PA are required to fully understand differences between sexes and across seasons.

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KW - young people

KW - accelerometers

KW - seasons

M3 - Article

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JO - International Journal of Exercise Science

JF - International Journal of Exercise Science

SN - 1939-795X

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