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Impact of an 8-month trial using height-adjustable desks on children's classroom sitting patterns and markers of cardio-metabolic and musculoskeletal health

Contardo Ayala, Ana Maria, Salmon, Jo, Timperio, Anna, Sudholz, Bronwyn, Ridgers, Nicola D., Sethi, Parneet and Dunstan, David W. 2016, Impact of an 8-month trial using height-adjustable desks on children's classroom sitting patterns and markers of cardio-metabolic and musculoskeletal health, International journal of environmental research and public health, vol. 13, no. 12, Article Number : 1227, pp. 1-15, doi: 10.3390/ijerph13121227.

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Title Impact of an 8-month trial using height-adjustable desks on children's classroom sitting patterns and markers of cardio-metabolic and musculoskeletal health
Author(s) Contardo Ayala, Ana Maria
Salmon, JoORCID iD for Salmon, Jo orcid.org/0000-0002-4734-6354
Timperio, AnnaORCID iD for Timperio, Anna orcid.org/0000-0002-8773-5012
Sudholz, Bronwyn
Ridgers, Nicola D.ORCID iD for Ridgers, Nicola D. orcid.org/0000-0001-5713-3515
Sethi, Parneet
Dunstan, David W.
Journal name International journal of environmental research and public health
Volume number 13
Issue number 12
Season Article Number : 1227
Start page 1
End page 15
Total pages 15
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2016
ISSN 1660-4601
Keyword(s) anthropometric measures
blood pressure
classroom-based intervention
height-adjustable desks
musculoskeletal health
school-age children
sitting time
Science & Technology
Life Sciences & Biomedicine
Environmental Sciences
Public, Environmental & Occupational Health
Environmental Sciences & Ecology
MEASURED SEDENTARY BEHAVIOR
PHYSICAL-ACTIVITY
CARDIOMETABOLIC HEALTH
ENERGY-EXPENDITURE
RANDOMIZED-TRIAL
LIFE-STYLE
TIME
ADOLESCENTS
SCHOOL
RISK
Summary During school hours, children can sit for prolonged and unbroken periods of time. This study investigated the impact of an 8-month classroom-based intervention focusing on reducing and breaking-up sitting time on children's cardio-metabolic risk factors (i.e., body mass index, waist circumference, blood pressure) and perceptions of musculoskeletal discomfort. Two Year-6 classes (24 students per class) in one primary school were assigned to either an intervention or control classroom. The intervention classroom was equipped with height-adjustable desks and the teacher was instructed in the delivery of pedagogical strategies to reduce and break-up sitting in class. The control classroom followed standard practice using traditional furniture. At baseline, and after 8-months, time spent sitting, standing, stepping, and sitting-bouts (occasions of continuous sitting) as well as the frequency of sit-to-stand transitions were obtained from activPAL inclinometers and the time spent in light-intensity physical activity was obtained from ActiGraph accelerometers. Demographics and musculoskeletal characteristics were obtained from a self-report survey. Hierarchical linear mixed models found that during class-time, children's overall time spent sitting in long bouts (>10 min) were lower and the number of sit-to-stand transitions were higher in the intervention group compared to the control group, while no changes were observed for musculoskeletal pain/discomfort. No significant intervention effects were found for the anthropometrics measures and blood pressure. Height-adjustable desks and pedagogical strategies to reduce/break-up sitting can positively modify classroom sitting patterns in children. Longer interventions, larger and varied sample size may be needed to show health impacts; however, these desks did not increase musculoskeletal pain/discomfort.
Language eng
DOI 10.3390/ijerph13121227
Field of Research 110299 Cardiorespiratory Medicine and Haematology not elsewhere classified
MD Multidisciplinary
Socio Economic Objective 920501 Child Health
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30090520

Document type: Journal Article
Collections: School of Exercise and Nutrition Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.