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Effects of a home-based intervention on diet and physical activity behaviours for rural adults with or at risk of metabolic syndrome: a randomised controlled trial.
Blackford, K, Jancey, J, Lee, AH, James, A, Howat, P, Waddell, T
The international journal of behavioral nutrition and physical activity. 2016;13:13
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Metabolic syndrome is characterised by a cluster of symptoms ranging from central obesity to raised triglycerides in the blood. There are thought to be a number of possible risk factors including sedentary lifestyle, a lack of fruit and vegetable consumption and being overweight or obese. This study aimed to determine if a home based lifestyle intervention using motivational interviewing, self-monitoring and goal setting could improve the activity levels and eating behaviours of people aged 50-69, at risk of or with metabolic syndrome in rural disadvantaged Australia. This was a randomised controlled trial assessing 6 months physical activity, diet and weight management interventions. The intervention group received motivational interviewing to encourage behavioural changes and showed a marginally significant increase in their metabolic equivalent (MET) minutes of moderate intensity physical activity and significantly improved fibre, fat and vegetable intake. The authors concluded that the use of a home based, low cost intervention using motivational interviewing, self monitoring and regular personal feedback can have a positive impact on behavioural changes to diet and physical activity levels in deprived areas with or at risk of metabolic syndrome
Abstract
BACKGROUND This study aimed to determine whether a home-based 6-month lifestyle intervention program complemented by motivational interviewing could improve diet and physical activity behaviours in 50-69 year olds with or at risk of metabolic syndrome, residing in a disadvantaged rural Western Australian community. METHODS Participants from the City of Albany and surrounding towns (n = 401) were recruited into a 6 month randomised controlled trial. They were screened for metabolic syndrome and randomly allocated to intervention (n = 201) or control group (n = 200). Baseline and post-test data collection for both groups included a self-report questionnaire which incorporated the Fat and Fibre Barometer and the International Physical Activity Questionnaire Short Form. The intervention group received the program materials at baseline and the control group was waitlisted. Generalised estimating equation models assessed repeated outcome measures over time. RESULTS A total of 151 (75.1%) intervention and 159 (79.5%) control group participants completed post-test and were included in the analysis. After controlling for confounders, the intervention group achieved a marginally significant increase in their metabolic equivalent (MET) minutes of moderate intensity physical activity per week (p = 0.049), and significantly improved fibre intake (p < 0.001), fat intake (p = 0.003), and vegetable serves per day (p = 0.002) from baseline to post-test relative to the control group. CONCLUSION A home-based, low-cost intervention with motivational support can effectively improve the physical activity and dietary behaviours of adults aged 50-69 years with or at risk of metabolic syndrome residing in a disadvantaged rural area. TRIAL REGISTRATION Anzctr.org.au Identifier: ACTRN12614000512628.