78 Abstracts nutrition strategies. Online canteens, where par- ents or students order and pay for their child’s lunch online, represent a novel and attractive opportu- nity to deliver interventions to improve healthy food purchases at scale with high fidelity. Aim: Given the increasing use of online can- teens, the researchers sought to investigate the efficacy of using an online canteen system to deliver a consumer behaviour intervention to improve the healthiness of canteen lunch order purchases for primary school students. This presentation compre- hensively describes the study protocol for a cluster randomised trial investigating this research ques- tion. Methods: Ten NSW schools currently using an online canteen will be randomised in a 1:1 ratio to receive either the intervention or control (standard online ordering only). The intervention will include a suite of consumer behaviour strategies to encour- age healthy food purchase including (i) availability (increasing availability of healthy items), menu labelling, placement and prompting. Intervention efficacy will be assessed through between group comparison of the nutritional value of lunch order purchases, as recorded by the online ordering sys- tem at baseline (6 month period pre-intervention) and follow up (6-month period post-intervention commencement). Specifically, the trial will assess the total kilojoule, saturated fat, sugar and sodium content of food and beverages purchased of online lunch orders and (ii) the proportion of foods pur- chased of high (green) and low (red) nutritional value as determined by state canteen policy. Conclusion: The proposed trial represents the first randomised trial internationally to examine the efficacy of an online intervention on improv- ing healthy food purchases from a primary school canteen https://doi.org/10.1016/j.orcp.2016.10.221 221 Community junior sport sponsorship: Children’s responses to unhealthy food vs. pro-health sponsorship options Helen Dixon 1,∗ , Maree Scully 1 , Melanie Wakefield 1 , Bridget Kelly 2 , Simone Pettigrew 3 1 Centre for Behavioural Research in Cancer, Cancer Council Victoria, Melbourne, VIC, Australia 2 School of Health and Society, University of Wollongong, Wollongong, NSW, Australia 3 School of Psychology and Speech Pathology, Curtin University, Bentley, WA, Australia Background: Participation in community junior sport delivers many health benefits to children; however, exposure to unhealthy food sponsorship in these settings may promote unhealthy food choices to children, and ultimately contribute to poor health outcomes. Aim: To explore children’s responses to sponsor- ship of community junior sport by unhealthy food brands, and investigate the utility of alternative, pro-health sponsorship options. Methods: Experimental design whereby 1000 students in grades 1 to 3 from Melbourne metropoli- tan primary schools will be randomly assigned to one of four sponsorship conditions: (i) unhealthy food branding; (ii) healthy food branding; (iii) non-food branding; (iv) obesity prevention cam- paign branding. All participants will initially be exposed to an image of a merchandise set for their favourite sport branded with the logo correspond- ing to their assigned condition—thus simulating the process of enrolling in a local sports club and receiv- ing branded merchandise at the start of the season. Following exposure to the intervention, partici- pants will complete a series of questions assessing their brand awareness, brand attitudes, and pref- erence for food sponsor products. Results: Data collection for this study is under- way and will be completed in July. Results will be available for presentation at the conference. For the analysis, logistic regression will be used to examine the effects of sponsorship condition on the proportion of students with top-of-mind awareness and preference for the (a) unhealthy food spon- sor product and (b) healthy food sponsor product respectively. Analysis of variance will be used to