Reduced appetite can occur with ageing and is linked to a higher risk of undernutrition, poorer physical function and becoming frail. Strategies to increase appetite are needed to improve healthy ageing. This study follows on from previous work which has found a novel ingredient in whey protein (derived from whole milk) that may help to increase appetite and energy intake. This study will compare the effects of the ingredient added to an oral nutritional supplement (ONS) versus the ONS alone versus the ingredient dissolved in water on appetite in older adults. By studying this nutrition supplement in older adults, this will help to provide greater information on possible nutrition strategies to improve healthy ageing.
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Pre-meal and changes in Hunger
Timeframe: 9.5 hours: fast (pre-ONS), pre-breakfast: 90 (post-ONS), 60, 30 and 0 min; post-breakfast: 0 and 180 min (pre-lunch); post-lunch: 0 and 90 min (pre-ONS); 0 min post-ONS; estimated 120 min. post-ONS (pre-dinner); 0 min. post-dinner
Energy Intake (EI) from an ad libitum breakfast meal (kilocalories)
Timeframe: Measures taken immediately following the ad libitum test meal (a single measurement)