Mathew Butterworth
Αcute effects of essential amino acid gel-based and whey protein supplements on appetite and energy intake in older women
Butterworth, Mathew; Lees, Matthew; Harlow, Paul; Hind, Karen; Duckworth, Lauren; Ispoglou, Theocharis
Authors
Matthew Lees
Paul Harlow
Karen Hind
Lauren Duckworth
Theocharis Ispoglou
Abstract
Deficiencies in protein and energy intakes are partly responsible for age-related sarcopenia. We investigated the effects of supplements matched in essential amino acid (EAA) content (7.5 g) on energy intake and appetite. Ten women aged 69.2 ± 2.7 years, completed three trials in a randomised, crossover design. Composite appetite scores, peptide-YY (PYY), and insulin responses to a 200 ml whey protein isolate (WP, 275 kJ), a 50 ml EAA gel (GEL, 478 kJ) or nothing as the control condition (CON) were investigated over one hour, followed by an ad libitum breakfast. Energy intake at breakfast (CON 1957 ± 713, WP 1413 ± 623, GEL 1963 ± 611 kJ) was higher in CON and GEL than in WP (both P = 0.006). After accounting for supplement energy content, energy intake in GEL was higher than in CON (P = 0.0006) and WP (P = 0.0008). Time-averaged area under the curve for composite appetite scores (CON 74 ± 20, WP 50 ± 22, GEL 60 ± 16 mm) was higher in CON than WP (P = 0.015). Time-averaged area under the curve for PYY (CON 87 ± 13, WP 119 ± 27, GEL 97 ± 22 pg·mL-1) was higher in WP than CON (P = 0.009) and GEL (P = 0.012). In conclusion, supplementation with WP facilitated an increase in protein intake, whereas supplementation with GEL increases in both energy and protein intakes, when consumed before an ad libitum breakfast. Such findings, highlight potential gel-based EAA supplementation intake for addressing age-related sarcopenia.
Citation
Butterworth, M., Lees, M., Harlow, P., Hind, K., Duckworth, L., & Ispoglou, T. (2019). Αcute effects of essential amino acid gel-based and whey protein supplements on appetite and energy intake in older women. Applied Physiology, Nutrition, and Metabolism, 44(11), 1141-1149. https://doi.org/10.1139/apnm-2018-0650
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 15, 2018 |
Online Publication Date | Mar 5, 2019 |
Publication Date | Nov 30, 2019 |
Deposit Date | Oct 24, 2018 |
Publicly Available Date | Feb 15, 2019 |
Journal | Applied Physiology, Nutrition, and Metabolism |
Print ISSN | 1715-5312 |
Electronic ISSN | 1715-5320 |
Publisher | Canadian Science Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 44 |
Issue | 11 |
Pages | 1141-1149 |
DOI | https://doi.org/10.1139/apnm-2018-0650 |
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