Next Article in Journal
Conceptualizing Youth Participation in Children’s Health Research: Insights from a Youth-Driven Process for Developing a Youth Advisory Council
Next Article in Special Issue
Can Wearable Cameras Be Used to Validate School-Aged Children’s Lifestyle Behaviours?
Previous Article in Journal
Hepatoblastoma—The Evolution of Biology, Surgery, and Transplantation
Previous Article in Special Issue
Establishing Raw Acceleration Thresholds to Classify Sedentary and Stationary Behaviour in Children
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Children 2019, 6(1), 2; https://doi.org/10.3390/children6010002

Longitudinal Changes in Sitting Patterns, Physical Activity, and Health Outcomes in Adolescents

1
Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong 3220, Australia, [email protected] (J.S.)
2
Physical Activity Laboratory, Baker Heart and Diabetes Institute, Melbourne 3004, Australia
3
Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne 3000, Australia
*
Author to whom correspondence should be addressed.
Received: 9 November 2018 / Revised: 18 December 2018 / Accepted: 18 December 2018 / Published: 23 December 2018
(This article belongs to the Special Issue Physical Activity and Sedentary Behaviour in Children and Adolescents)
  |  
PDF [394 KB, uploaded 23 December 2018]
  |     |  

Abstract

This study examined two-year changes in patterns of activity and associations with body mass index (BMI) and waist circumference (WC) among adolescents. Inclinometers (activPAL) assessed sitting, sitting bouts, standing, stepping, and breaks from sitting. ActiGraph-accelerometers assessed sedentary time (SED), light-intensity physical activity (LIPA, stratified as low- and high-LIPA), and moderate-to-vigorous physical activity (MVPA). Anthropometric measures were objectively assessed at baseline and self-reported at follow-up. Data from 324 and 67 participants were obtained at baseline and follow-up, respectively. Multilevel mixed-effects linear regression models examined changes over time, and associations between baseline values and BMI and WC at follow-up. There were significant increases in BMI (0.6 kg/m2) and durations of prolonged sitting (26.4 min/day) and SED (52 min/day), and significant decreases in stepping (−19 min/day), LIPA (−33 min/day), low-LIPA (−26 min/day), high-LIPA (−6.3 min/day), MVPA (−19 min/day), and the number of breaks/day (−8). High baseline sitting time was associated (p = 0.086) with higher BMI at follow-up. There were no significant associations between baseline sitting, prolonged sitting, LIPA, or MVPA with WC. Although changes in daily activity patterns were not in a favourable direction, there were no clear associations with BMI or WC. Research with larger sample sizes and more time points is needed. View Full-Text
Keywords: sitting time; body mass index; waist circumference; activPAL; ActiGraph; adolescents sitting time; body mass index; waist circumference; activPAL; ActiGraph; adolescents
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Contardo Ayala, A.M.; Salmon, J.; Dunstan, D.W.; Arundell, L.; Parker, K.; Timperio, A. Longitudinal Changes in Sitting Patterns, Physical Activity, and Health Outcomes in Adolescents. Children 2019, 6, 2.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Children EISSN 2227-9067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top