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Is there a need for protein ingestion during exercise?
1Department of Human Movement Sciences, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University Medical Centre+, PO Box 616, 6200 MD, Maastricht, The Netherlands, L.vanLoon@maastrichtuniversity.nl.
Sports Medicine (Auckland, N.Z.)
|May 6, 2014
Summary
Consuming protein before and during exercise aids muscle adaptation. However, it does not enhance exercise performance beyond carbohydrate intake alone.
Area of Science:
- Exercise Physiology
- Nutritional Biochemistry
Background:
- Dietary protein intake post-exercise enhances muscle protein synthesis and adaptation.
- Emerging research indicates pre- and during-exercise protein consumption also boosts muscle protein synthesis.
Purpose of the Study:
- To evaluate the impact of protein ingestion before and during prolonged exercise on skeletal muscle adaptation.
- To determine if protein ingestion during exercise offers ergogenic benefits for performance.
Main Methods:
- Review of recent studies on protein timing and muscle adaptation.
- Analysis of research investigating protein ingestion during exercise and its effect on performance metrics like time trial and time to exhaustion.
Main Results:
- Protein intake before and during exercise may extend the anabolic signaling window.
- Studies show no significant ergogenic benefit of protein ingestion during exercise on time trial performance compared to carbohydrate alone.
Conclusions:
- Pre- and during-exercise protein ingestion can support muscle adaptation by prolonging the muscle protein synthetic response.
- Protein ingestion with carbohydrate during exercise does not improve performance beyond carbohydrate-only strategies.
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