Cited by 44Muscle metabolism and nutritionNutrition and Health in AgingMuscle Physiology and Disorders

Carbohydrate co-ingestion with protein does not further augment post-prandial muscle protein accretion in older men

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Hamer, Henrike M, Wall, Benjamin T, Kiskini, Alexandra, de Lange, Anneke, Groen, Bart B L, Bakker, Jaap A, Gijsen, Annemie P, Verdijk, Lex B +1 more·2013·Nutrition & Metabolism

Abstract

Background: A blunted muscle protein synthetic response to protein ingestion may contribute to the age related loss of muscle tissue. We hypothesized that the greater endogenous insulin release following co-ingestion of carbohydrate facilitates post-prandial muscle protein accretion after ingesting a meal-like bolus of protein in older males. Methods: Twenty-four healthy older men (75±1 y) were randomly assigned to ingest 20 g intrinsically L-[1-13 C] phenylalanine-labeled casein protein with (PRO-CHO) or without (PRO) 40 g carbohydrate. Ingestion of specifically produced intrinsically L-[1-13 C] phenylalanine labeled protein allowed us to assess post-prandial incorporation of dietary protein derived amino acids into muscle protein. Blood samples were collected at regular intervals, with muscle biopsies being obtained prior to and 2 and 6 h after protein ingestion. Results: Plasma glucose and insulin concentrations showed a greater increase in PRO-CHO compared with PRO (P<0.001). Muscle protein-bound L-[1-13 C] phenylalanine enrichments tended to increase to a greater extent in PRO-CHO compared with PRO during the first 2 h after protein ingestion (0.0072±0.0013 vs 0.0046±0.010 MPE, respectively; P=0.13). However, 6 h after protein ingestion, differences in muscle protein-bound L-[1-13 C] phenylalanine enrichments were no longer observed between experiments (0.0213±0.0024 vs 0.0185±0.0010 MPE, respectively; P=0.30). Conclusions: This study shows that carbohydrate ingestion may accelerate, but does not further augment post-prandial incorporation of dietary protein derived amino acids into muscle protein in healthy elderly men.

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Crossref · 10.1186/1743-7075-10-15

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  • Adding a non-pharmacological dose of carbohydrates to a protein synthesis activating dose of proteins has no additive effect on FSR.

    “Regardless of potential differences in insulinemia, adding a non‐pharmacological dose of carbohydrates to a protein synthesis activating dose of proteins (15–30 g) has no additive effect on FSR (Glynn et al., 2013; Hamer et al., 2013; Koopman et al., 2007; Staples et al., 2011), our primary outcome.”

    From The effect of acute sleep deprivation on skeletal muscle protein synthesis and the hormonal environment (2021) · cites this paper as Hamer et al., 2013

    The Results report no difference in six-hour muscle protein FSR between the protein-plus-carbohydrate and protein-only groups. The Discussion specifies that the study tested 20 g protein with or without 40 g carbohydrate in healthy older men; it does not establish the result across the full 15–30 g protein range or other populations. (LLM, conf=0.84)

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Authors
Hamer, H. M., Wall, B. T., Kiskini, A., de Lange, A., Groen, B. B. L., Bakker, J. A., Gijsen, A. P., Verdijk, L. B., & van Loon, L. J. C.
Affiliations
Maastricht University Medical Centre (NL)
Venue
Nutrition & Metabolism
Published
2013-01-25
Volume
10
Issue
1
Pages
15-15
ISSN
1743-7075 (ISSN-L)
OpenAlex
W2112603567
Cited by
44
References
45
Citations by year
2025: 1 · 2024: 2 · 2023: 2 · 2022: 1 · 2021: 3 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 2 · 2016: 8 · 2015: 7 · 2014: 7 · 2013: 3
FWCI
4.83
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Nutrition & Metabolism (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research Publications (Maastricht University) (publishedVersion, cc-by)
  • Research Bank (Australian Catholic University) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Research Publications (Maastricht University) (submittedVersion, other-oa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
muscle protein accretion, older men, insulin response, phenylalanine incorporation, muscle protein synthesis, sarcopenia, dietary protein

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