Please use this identifier to cite or link to this item: http://docs.prosentient.com.au/prosentientjspui/handle/1/10697
Title: Mediators and moderators of nutrition intervention effects in remote Indigenous Australia.
Authors: Brimblecombe, Julie
Ferguson, Megan
Barzi, Federica
Brown, Clare
Ball, Kylie
Affiliation: 1Department of Nutrition,Dietetics and Food,School of Clinical Sciences, Faculty of Medicine, Nursing and Health Sciences,Monash University,level 1,264 Ferntree Gully Road,Notting Hill,VIC 3168,Australia..
2Menzies School of Health Research,Wellbeing and Preventable Chronic Diseases Division,Royal Darwin Hospital Campus,Rocklands Drive,Tiwi,NT 0810,Australia..
2Menzies School of Health Research,Wellbeing and Preventable Chronic Diseases Division,Royal Darwin Hospital Campus,Rocklands Drive,Tiwi,NT 0810,Australia..
2Menzies School of Health Research,Wellbeing and Preventable Chronic Diseases Division,Royal Darwin Hospital Campus,Rocklands Drive,Tiwi,NT 0810,Australia..
3School of Exercise and Nutrition Sciences,Institute for Physical Activity and Nutrition (IPAN),Locked Bag 20000,Geelong,VIC 3220,Australia..
Issue Date: Jun-2018
Citation: The British journal of nutrition 2018-06; 119(12): 1424-1433
Abstract: We conducted a longitudinal dietary intervention study to assess the impact of a store-based intervention on mediators and moderators and consequent dietary behaviour in Indigenous communities in remote Australia. We assessed dietary intake of fruit, vegetable, water and sweetened soft drink, mediators and moderators among 148, eighty-five and seventy-three adult participants (92 % women) at baseline (T1), end of intervention (T2) and at 24 weeks post intervention (T3), respectively. Mediators included perceived affordability and self-efficacy. Moderators were barriers to eat more fruit and vegetables and food security. Mixed-effects models were used to determine changes in mediators and moderators with time and associations between these and each dietary outcome. Perceived vegetable affordability increased from T1 (19 %; 95 % CI 11, 27) to T2 (38 %; 95 % CI 25, 51) (P=0·004) and returned to baseline levels at T3. High self-efficacy to eat more fruit and vegetables and to drink less soft drink decreased from T1 to T3. A reduction in soft drink intake of 27 % (95 % CI -44, -4; P=0·02) was reported at T3 compared with T1; no changes with time were observed for all other outcome measures. Regardless of time, vegetable intake was positively associated with self-efficacy to cook and try new vegetables, no barriers and food security. The dietary intervention went someway to improving perceived affordability of vegetables but was probably not strong enough to overcome other mediators and moderators constraining behaviour change. Meaningful dietary improvement in this context will be difficult to achieve without addressing underlying constraints to behaviour change.
URI: http://docs.prosentient.com.au/prosentientjspui/handle/1/10697
DOI: 10.1017/S0007114518000880
Type: Journal Article
Subjects: Dietary intakes
Diets
Indigenous communities
Longitudinal sub-studies
Mediators
Moderators
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