Who will increase their physical activity? Predictors of change in objectively measured physical activity over 12 months in the ProActive cohort

BMC Public Health

Research Article

Wendy Hardeman¹  Stephen Sutton¹  Simon J Griffin²  Rebecca K Simmons²  Esther MF van Sluijs² 

[1] General Practice & Primary Care Research Unit, Institute of Public Health, Forvie Site, Robinson Way, CB2 0SR, Cambridge, UK;MRC Epidemiology Unit, Institute of Metabolic Science, Addenbrooke's Hospital, Box 285, Hills Road, CB2 0QQ, Cambridge, UK;

关键词: Physical Activity;    Behavioural Control;    Physical Activity Behaviour;    Common Method Variance;    Rest Energy Expenditure;   

DOI  :  10.1186/1471-2458-10-226

 received in 2009-08-26, accepted in 2010-04-30,  发布年份 2010

来源: Springer

【 摘 要 】

BackgroundThe aim was to identify predictors of change in objectively measured physical activity over 12 months in the ProActive cohort to improve understanding of factors influencing change in physical activity.MethodsProActive is a physical activity promotion trial that took place in Eastern England (1999-2004). 365 offspring of people with type 2 diabetes underwent measurement of physical activity energy expenditure (PAEE) using heart rate monitoring, fitness, and anthropometric and biochemical status at baseline and 1 year (n = 321). Linear regression was used to quantify the associations between baseline demographic, clinical, psychosocial and behavioural variables and change in PAEE over 12 months. This study is registered as ISRCTN61323766.ResultsProActive participants significantly increased their PAEE by 0.6 kj/min (SD 4.2, p = 0.006) over one year, the equivalent of around 20 minutes brisk walking/day. Male sex and higher fitness at baseline predicted increase in PAEE. No significant associations were found for any other variables. Very few baseline demographic, clinical, psychosocial and behavioural predictors were associated with change in objectively measured physical activity.ConclusionsTraditional baseline determinants of self-reported physical activity targeted by behavioural interventions may be relatively weak predictors of change in objectively measured physical activity. Further research is needed to improve our understanding of factors influencing change in physical activity to inform the development and targeting of interventions.

【 授权许可】

Unknown   
© Simmons et al; licensee BioMed Central Ltd. 2010. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.