Segmented sedentary time and physical activity patterns throughout the week from wrist-worn ActiGraph GT3X+ accelerometers in 7-12 year old children

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Abstract

Objective: This study examined the volume and patterns of physical activity (PA) and sedentary time (ST) across different segments of the week among boys and girls.

Methods: One hundred and eighty-eight children aged 7-12-years wore a wrist-mounted ActiGraph GT3X+ accelerometer for 7 days. Time spent in PA and ST was calculated using ActiLife software. Mean min of light, moderate, vigorous, moderate-to-vigorous PA (MVPA) and ST were calculated per weekday (before school, during school, after school) and per weekend day (morning and afternoon-evening).

Results: After-school represented the greatest accumulation of ST compared with before and during-school segments. Boys engaged in 225 min/day of ST (95%CI 216 – 235) and girls engaged in 222 min/day of ST (95%CI 213 – 231). During school, boys engaged in significantly more MVPA than girls (46 min/day [95%CI 44 – 48] vs. 41 min/day [95%CI 39 – 43]). Across the whole weekday, boys participated in significantly more MVPA than girls (104 min/day [95%CI 99 – 109] vs. 96 min/day [95%CI 90 – 101]). The weekend afternoon-evening segment represented the largest accumulation of ST where boys were significantly more sedentary than girls (368 min/day [95%CI 353 – 382] vs. 340 min/day [95%CI 325 – 355]).

Conclusions: Our findings suggest that children are highly sedentary and spend little of their time in school in MVPA, especially girls. Routine breaks in school elicit increases in light PA (LPA) and MVPA. Future work should consider the use of more active breaks within school time to encourage PA and reduce ST.
LanguageEnglish
JournalJournal of Sport and Health Science
Early online date19 Feb 2019
DOIs
StateE-pub ahead of print - 19 Feb 2019

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Wrist
Exercise
Light
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Keywords

  • accelerometry
  • segments
  • school
  • youth

Cite this

@article{1b745f4311f5482d83106557543239f3,
title = "Segmented sedentary time and physical activity patterns throughout the week from wrist-worn ActiGraph GT3X+ accelerometers in 7-12 year old children",
abstract = "Objective: This study examined the volume and patterns of physical activity (PA) and sedentary time (ST) across different segments of the week among boys and girls.Methods: One hundred and eighty-eight children aged 7-12-years wore a wrist-mounted ActiGraph GT3X+ accelerometer for 7 days. Time spent in PA and ST was calculated using ActiLife software. Mean min of light, moderate, vigorous, moderate-to-vigorous PA (MVPA) and ST were calculated per weekday (before school, during school, after school) and per weekend day (morning and afternoon-evening). Results: After-school represented the greatest accumulation of ST compared with before and during-school segments. Boys engaged in 225 min/day of ST (95\{%}CI 216 – 235) and girls engaged in 222 min/day of ST (95\{%}CI 213 – 231). During school, boys engaged in significantly more MVPA than girls (46 min/day [95\{%}CI 44 – 48] vs. 41 min/day [95\{%}CI 39 – 43]). Across the whole weekday, boys participated in significantly more MVPA than girls (104 min/day [95\{%}CI 99 – 109] vs. 96 min/day [95\{%}CI 90 – 101]). The weekend afternoon-evening segment represented the largest accumulation of ST where boys were significantly more sedentary than girls (368 min/day [95\{%}CI 353 – 382] vs. 340 min/day [95\{%}CI 325 – 355]). Conclusions: Our findings suggest that children are highly sedentary and spend little of their time in school in MVPA, especially girls. Routine breaks in school elicit increases in light PA (LPA) and MVPA. Future work should consider the use of more active breaks within school time to encourage PA and reduce ST.",
keywords = "accelerometry, segments, school, youth",
author = "Gillian McLellan and Rosemary Arthur and Samantha Donnelly and Buchan, {Duncan S.}",
year = "2019",
month = "2",
day = "19",
doi = "10.1016/j.jshs.2019.02.005",
language = "English",
journal = "Journal of Sport and Health Science",
issn = "2095-2546",
publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Segmented sedentary time and physical activity patterns throughout the week from wrist-worn ActiGraph GT3X+ accelerometers in 7-12 year old children

AU - McLellan,Gillian

AU - Arthur,Rosemary

AU - Donnelly,Samantha

AU - Buchan,Duncan S.

PY - 2019/2/19

Y1 - 2019/2/19

N2 - Objective: This study examined the volume and patterns of physical activity (PA) and sedentary time (ST) across different segments of the week among boys and girls.Methods: One hundred and eighty-eight children aged 7-12-years wore a wrist-mounted ActiGraph GT3X+ accelerometer for 7 days. Time spent in PA and ST was calculated using ActiLife software. Mean min of light, moderate, vigorous, moderate-to-vigorous PA (MVPA) and ST were calculated per weekday (before school, during school, after school) and per weekend day (morning and afternoon-evening). Results: After-school represented the greatest accumulation of ST compared with before and during-school segments. Boys engaged in 225 min/day of ST (95%CI 216 – 235) and girls engaged in 222 min/day of ST (95%CI 213 – 231). During school, boys engaged in significantly more MVPA than girls (46 min/day [95%CI 44 – 48] vs. 41 min/day [95%CI 39 – 43]). Across the whole weekday, boys participated in significantly more MVPA than girls (104 min/day [95%CI 99 – 109] vs. 96 min/day [95%CI 90 – 101]). The weekend afternoon-evening segment represented the largest accumulation of ST where boys were significantly more sedentary than girls (368 min/day [95%CI 353 – 382] vs. 340 min/day [95%CI 325 – 355]). Conclusions: Our findings suggest that children are highly sedentary and spend little of their time in school in MVPA, especially girls. Routine breaks in school elicit increases in light PA (LPA) and MVPA. Future work should consider the use of more active breaks within school time to encourage PA and reduce ST.

AB - Objective: This study examined the volume and patterns of physical activity (PA) and sedentary time (ST) across different segments of the week among boys and girls.Methods: One hundred and eighty-eight children aged 7-12-years wore a wrist-mounted ActiGraph GT3X+ accelerometer for 7 days. Time spent in PA and ST was calculated using ActiLife software. Mean min of light, moderate, vigorous, moderate-to-vigorous PA (MVPA) and ST were calculated per weekday (before school, during school, after school) and per weekend day (morning and afternoon-evening). Results: After-school represented the greatest accumulation of ST compared with before and during-school segments. Boys engaged in 225 min/day of ST (95%CI 216 – 235) and girls engaged in 222 min/day of ST (95%CI 213 – 231). During school, boys engaged in significantly more MVPA than girls (46 min/day [95%CI 44 – 48] vs. 41 min/day [95%CI 39 – 43]). Across the whole weekday, boys participated in significantly more MVPA than girls (104 min/day [95%CI 99 – 109] vs. 96 min/day [95%CI 90 – 101]). The weekend afternoon-evening segment represented the largest accumulation of ST where boys were significantly more sedentary than girls (368 min/day [95%CI 353 – 382] vs. 340 min/day [95%CI 325 – 355]). Conclusions: Our findings suggest that children are highly sedentary and spend little of their time in school in MVPA, especially girls. Routine breaks in school elicit increases in light PA (LPA) and MVPA. Future work should consider the use of more active breaks within school time to encourage PA and reduce ST.

KW - accelerometry

KW - segments

KW - school

KW - youth

U2 - 10.1016/j.jshs.2019.02.005

DO - 10.1016/j.jshs.2019.02.005

M3 - Article

JO - Journal of Sport and Health Science

T2 - Journal of Sport and Health Science

JF - Journal of Sport and Health Science

SN - 2095-2546

ER -