The determination of the satiety effect of dietary fibre using trained panelists

INTERVENTION: Arm 1 1. effect of a training intervention versus no‐training on the test‐retest precision and reliability of 2 hr post‐prandial satiety evaluation after consumption of a standard breakfast. Standard breakfast (total weight 228g) containing cereal flakes (15g each of Kellogg’s 'registered trademark' Branflakes 'registered trademark' , Cornflakes 'registered trademark' and Special K 'registered trademark' , sultanas (8g) and whole milk (175g) with an energy content of 1261 kJ Panelists will be instructed to fast overnight for 10 hours and consume only water prior to consumption of the standard breakfast. Panelists then complete the labeled magnitude satiety scale. Panelists are tested on 4 occasions with a 3 to 7 day washout. All breakfast bowls are checked to ensure the entire meal was consumed. During the training intervention fasted panelists will consume the standard breakfast meal at time point 0 and complete the LMS. All LMS results will then be transcribed on a whiteboard and the results discussed. Through discussion consensus will be reached by the panelists on the meaning of the descriptor words and an agreed set of more detailed definitions of the descriptors will be generated by the panel through a process of voting. The training session will occur once during the study, seven days before the 4 test occasions and will be for 1 hour. It will be administered by a primary researcher using a pre‐defined scripted protocol. Arm 2 2. The trained panelist from arm 1 will complete arm 2. Panelists will fast for 10 hours. A standard breakfast meal with 5g of viscous fibre PGX (A) will be consumed in random order with the control consumed 5g of inulin (B). Panelists will mark their fasting level of hunger/fullness on the labeled magnitude satiety scale (LMS) over a 2 hour period. Panelists will arrive for breakfast at 8am and must consume the meal in 12 minutes. Panelists will be tested on 8 occasions (the controls of inulin and wheat dextrin will be tested twice, PGX granules will be tested twice and PGX gels tested twice) with a 3 to 7 day washout. Blood sample taken at the 7 time points over 2 hours will be used to determine if a relationship with the satiety rating at the same points exists CONDITION: preventative obesity PRIMARY OUTCOME: Post Prandial satiety response by labelled magnitude satiety line scale (LMS).Hunger and fullness will be assessed following the protocol in outcome 1. The training study will be conducted to determine the effect on the reliability of the satiety panel. Intra‐class correlation (ICC) between test and retest will be used to determine the effect of training on the reliability of the panel. Satiety will be assessed using a 190mm labeled magnitude satiety scale (LMS). Postprandial glycaemia will be assessed using finger prick blood samples and a Glucose analyser. SECONDARY OUTCOME: nil INCLUSION CRITERIA: Healthy adults aged 19‐53 years. BMI 18.1 ‐ 29.5 kg/m^2