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Dericioglu D, Methven L, Clegg ME. Understanding age-related changes: exploring the interplay of protein intake, physical activity and appetite in the ageing population. Proc Nutr Soc 2024:1-13. [PMID: 38557431 DOI: 10.1017/s0029665124002192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Globally, we are currently facing a rapid demographic shift leading to an increase in the proportion of older adults within the population. This raises concerns about the potential increase in age-related diseases and their impact on our ability to provide adequate health and end-of-life care. To apply appropriate interventions, understanding the changes that happen with ageing becomes essential. Ageing is often accompanied by a decrease in appetite and physical activity, which may lead to malnutrition, resulting in decreased muscle mass, physical capabilities and independence. To preserve muscle mass, older adults are advised to increase protein intake and physical activity. However, protein's high satiating effect may cause reduced energy intake. Physical activity is also advised to maintain or enhance older adult's appetite. This review paper aims to discuss appetite-related changes that occur with ageing and their consequences. In particular, it will focus on investigating the relationship between protein intake and physical activity and their impact on appetite and energy intake in the ageing population. Recent studies suggest that physical activity might contribute to maintaining or enhancing appetite in older adults. Nevertheless, establishing a definitive consensus on the satiating effect of protein in ageing remains a work in progress, despite some promising results in the existing literature.
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Affiliation(s)
- Dilara Dericioglu
- Hugh Sinclair Unit of Human Nutrition, Department of Food and Nutritional Sciences, University of Reading, Whiteknights, ReadingRG6 6DZ, UK
- Institute of Food, Nutrition and Health, University of Reading, Whiteknights, Reading RG6 6EU, UK
| | - Lisa Methven
- Institute of Food, Nutrition and Health, University of Reading, Whiteknights, Reading RG6 6EU, UK
- Food Research Group, Department of Food and Nutritional Sciences, University of Reading,Whiteknights, Reading RG6 6DZ, UK
| | - Miriam E Clegg
- Hugh Sinclair Unit of Human Nutrition, Department of Food and Nutritional Sciences, University of Reading, Whiteknights, ReadingRG6 6DZ, UK
- Institute of Food, Nutrition and Health, University of Reading, Whiteknights, Reading RG6 6EU, UK
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
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Dericioglu D, Oldham S, Methven L, Shafat A, Clegg ME. Macronutrients effects on satiety and food intake in older and younger adults: A randomised controlled trial. Appetite 2023; 189:106982. [PMID: 37507052 DOI: 10.1016/j.appet.2023.106982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/07/2023] [Accepted: 07/24/2023] [Indexed: 07/30/2023]
Abstract
Older adults are advised to increase their protein intake to maintain their muscle mass. However, protein is considered the most satiating macronutrient and this recommendation may cause a decrease in total energy intake. To date, satiety studies comparing all three macronutrients have been undertaken in young adults, and it is unclear if the same response is seen in older adults. The objective of this study was to compare the effect of preloads high in protein, fat, and carbohydrate but equal in energy (∼300 kcal) and volume (250 ml) on energy intake, perceived appetite, and gastric emptying in younger and older adults. Twenty older and 20 younger adults completed a single-blinded randomised crossover trial involving three study visits. Participants consumed a standard breakfast, followed by a preload milkshake high in either carbohydrate, fat, or protein. Three hours after the preload, participants were offered an ad libitum meal to assess food intake. Visual analogue scales were used to measure perceived appetite and gastric emptying was measured via the 13C-octanoic acid breath test. There was no significant effect of preload type or age on energy intake either at the ad libitum meal, self-recorded food intake for the rest of the test day or subjective appetite ratings. There was a significant effect of preload type on gastric emptying latency phase and ascension time, and an effect of age on gastric emptying latency and lag phase such that older adults had faster emptying. In conclusion, energy intake, and perceived appetite were not affected by macronutrient content of the preloads in both younger and older adults, but gastric emptying times differed.
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Affiliation(s)
- Dilara Dericioglu
- Hugh Sinclair Human of Nutrition, Department of Food and Nutritional Sciences, University of Reading, Whiteknights, Reading, RG6 6DZ, UK; Institute of Food, Nutrition and Health, University of Reading, Whiteknights, Reading, RG6 6EU, UK.
| | - Stephanie Oldham
- Hugh Sinclair Human of Nutrition, Department of Food and Nutritional Sciences, University of Reading, Whiteknights, Reading, RG6 6DZ, UK; Institute of Food, Nutrition and Health, University of Reading, Whiteknights, Reading, RG6 6EU, UK.
| | - Lisa Methven
- Food Research Group, Department of Food and Nutritional Sciences, University of Reading, Whiteknights, Reading, RG6 6DZ, UK; Institute of Food, Nutrition and Health, University of Reading, Whiteknights, Reading, RG6 6EU, UK.
| | - Amir Shafat
- Physiology, School of Medicine, University of Galway, Galway, H91 W5P7, Ireland.
| | - Miriam E Clegg
- Hugh Sinclair Human of Nutrition, Department of Food and Nutritional Sciences, University of Reading, Whiteknights, Reading, RG6 6DZ, UK; Institute of Food, Nutrition and Health, University of Reading, Whiteknights, Reading, RG6 6EU, UK.
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