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“I love having a healthy lifestyle' – a qualitative study investigating body mass index trajectories from childhood to mid-adulthood

Citation

Sharman, MJ and Jose, KA and Venn, AJ and Banks, S and Ayton, J and Cleland, VJ, 'I love having a healthy lifestyle' - a qualitative study investigating body mass index trajectories from childhood to mid-adulthood, BMC Obesity, 6 pp. 1-10. ISSN 2052-9538 (2019) [Refereed Article]


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Copyright Statement

Copyright 2019 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.1186/s40608-019-0239-3

Abstract

Background: Children with overweight or obesity are at greatly increased risk of experiencing obesity in adulthood but for reasons generally unknown some attain a healthier adult weight. This qualitative study investigated individual, social and environmental factors that might explain diverging body mass index (BMI) trajectories. This knowledge could underpin interventions to promote healthy weight.

Methods: This 2016 study included participants from three adult follow-ups of children who (when 7–15 years) participated in the 1985 Australian Schools Health and Fitness Survey and provided BMI data at each time point. Trajectory-based group modelling identified five BMI trajectories: stable below average, stable average, increasing from average, increasing from very high and decreasing from very high. Between six and 12 participants (38–46 years) from each BMI trajectory group were interviewed (n = 50; 60% women). Thematic analysis guided by a socialecological framework explored individual, social and environmental influences on diet and physical activity within the work setting.

Results: A distinct approach to healthy behaviour was principally identified in the stable and decreasing BMI groups – we term this approach "health identity" (exemplified by "I love having a healthy lifestyle"). This concept was predominant in the stable or decreasing BMI groups when participants explained why work colleagues seemingly did not influence their health behaviour. Participants in the stable and decreasing BMI groups also more commonly reported, bringing home-prepared lunches to work, working or being educated in a health-related field, having a physically active job or situating physical activity within and around work – the latter three factors were common among those who appeared to have a more distinct "health identity". Alcohol, workplace food culture (e. g. morning teas), and work-related stress appeared to influence weight-related behaviours, but generally these factors were similarly discussed across all trajectory groups.

Conclusion: Work-related factors may influence weight or weight-related behaviours, irrespective of BMI trajectory, but the concept of an individual’s "health identity" may help to explain divergent BMI trajectories. "Health identity" and its influence on health behaviour warrants further exploratory work.

Item Details

Item Type:Refereed Article
Keywords:diet, food and nutrition, body weights and measures, body promotion weight, over nutrition, exercise, health
Research Division:Medical and Health Sciences
Research Group:Public Health and Health Services
Research Field:Epidemiology
Objective Division:Health
Objective Group:Public Health (excl. Specific Population Health)
Objective Field:Nutrition
UTAS Author:Sharman, MJ (Dr Melanie Sharman)
UTAS Author:Jose, KA (Dr Kim Jose)
UTAS Author:Venn, AJ (Professor Alison Venn)
UTAS Author:Banks, S (Ms Susan Banks)
UTAS Author:Ayton, J (Ms Jennifer Ayton)
UTAS Author:Cleland, VJ (Dr Verity Cleland)
ID Code:132421
Year Published:2019
Deposited By:Medicine
Deposited On:2019-05-07
Last Modified:2019-06-07
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