The Muscle Protein Synthetic Response to Meal Ingestion Following Resistance-Type Exercise

Jorn Trommelen, Milan W. Betz, Luc J. C. van Loon*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

49 Citations (Web of Science)

Abstract

Protein ingestion following resistance-type exercise stimulates muscle protein synthesis rates and consequently enhances the skeletal muscle adaptive response to prolonged training. Ingestion of similar to 20 g of quickly digestible protein isolate optimizes muscle protein synthesis rates during the first few hours of post-exercise recovery. However, the majority of daily protein intake is consumed as slower digestible, nutrient-rich, whole-food protein sources as part of mixed meals. Therefore, the muscle protein synthetic response to the ingestion of protein supplements and typical foods or mixed meals may differ substantially. In addition, the muscle protein synthetic response to feeding is not only determined by acute nutrient intake but is also likely modulated by habitual energy and nutrient intake and nondietary factors such as habitual physical activity, body composition, age, and/or sex. Therefore, nutritional recommendations to maximize the muscle protein synthetic response to exercise depend on the type of meal (e.g., protein supplements vs. mixed meals) and the time until the next feeding opportunity (e.g., feeding before overnight sleep) and, therefore, need to be personalized to the individual athlete.

Original languageEnglish
Pages (from-to)185-197
Number of pages13
JournalSports Medicine
Volume49
Issue number2
DOIs
Publication statusPublished - Feb 2019

Keywords

  • MIDDLE-AGED MEN
  • LEAN BODY-MASS
  • FAT-FREE MASS
  • ANABOLIC RESISTANCE
  • ENERGY RESTRICTION
  • DIETARY-PROTEIN
  • SYNTHESIS RATES
  • HEALTHY-YOUNG
  • WHEY-PROTEIN
  • AMINO-ACIDS

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