The EverydayLife Study: Understanding eating patterns, physical activity, sleep and mood in Australian adults.

This study has two components (Part A and Part B). In Part A, participants will be asked to complete a Smartphone food diary and an online questionnaire. The Smartphone diary will be used over seven days to record food and beverage intake at each eating occasion (defined as any occasion when a food or beverage is consumed). For each eating occasion, participants record the foods and beverages consumed by providing an image and/or written message describing food types and the amounts of each food consumed. For each eating occasion, the diary will incorporate questions about the context of the eating occasion such as where they ate, who they ate with, what they were doing when eating (e.g. watching television). Food and beverage data from the Smartphone diary will be downloaded to a purpose-designed database and coded using Australian food composition databases. Food and nutrient intake will be calculated. Dietary data will be analysed in relation to eating patterns including patterning (frequency, timing and spacing of eating occasions) and the nutritional content of eating occasions. Levels of adherence to the Australian Dietary Guidelines will also be assessed. The Smartphone diary incorporates questions which provides a measure of current mood and additional visual analogue scales to differentiate mental and physical facets of fatigue. These mood measures will be completed at each eating occasion on two of the seven days. Additionally, the Smartphone diary incorporates sleep diary measures by including questions on sleep and wake times for each day. In Part B, a subgroup of participants (50%) will be invited to attend a clinic visit approximately 3 months later where a trained Research Assistant will collect measures of anthropometry, blood pressure and body composition. Participants will also be asked to complete a cognitive test and short online questionnaire. Following the visit, participants will wear a SenseWear armband and complete a second Smartphone food diary for seven days. The SenseWear armband will provide a measure of physical activity, energy expenditure and sleep.