Alcohol ingestion impairs maximal post-exercise rates of myofibrillar protein synthesis following a single bout of concurrent training
Parr, Evelyn, Camera, Donny, Areta, José, Burke, Louise, Phillips, Stuart, Hawley, John A. and Coffey, Vernon. (2014). Alcohol ingestion impairs maximal post-exercise rates of myofibrillar protein synthesis following a single bout of concurrent training. PLoS ONE. 9(2), pp. 1 - 9. https://doi.org/10.1371/journal.pone.0088384
|Authors||Parr, Evelyn, Camera, Donny, Areta, José, Burke, Louise, Phillips, Stuart, Hawley, John A. and Coffey, Vernon|
The culture in many team sports involves consumption of large amounts of alcohol after training/competition. The effect of such a practice on recovery processes underlying protein turnover in human skeletal muscle are unknown. We determined the effect of alcohol intake on rates of myofibrillar protein synthesis (MPS) following strenuous exercise with carbohydrate (CHO) or protein ingestion. Methods
In a randomized cross-over design, 8 physically active males completed three experimental trials comprising resistance exercise (8×5 reps leg extension, 80% 1 repetition maximum) followed by continuous (30 min, 63% peak power output (PPO)) and high intensity interval (10×30 s, 110% PPO) cycling. Immediately, and 4 h post-exercise, subjects consumed either 500 mL of whey protein (25 g; PRO), alcohol (1.5 g·kg body mass−1, 12±2 standard drinks) co-ingested with protein (ALC-PRO), or an energy-matched quantity of carbohydrate also with alcohol (25 g maltodextrin; ALC-CHO). Subjects also consumed a CHO meal (1.5 g CHO·kg body mass−1) 2 h post-exercise. Muscle biopsies were taken at rest, 2 and 8 h post-exercise. Results
Blood alcohol concentration was elevated above baseline with ALC-CHO and ALC-PRO throughout recovery (P Conclusion
We provide novel data demonstrating that alcohol consumption reduces rates of MPS following a bout of concurrent exercise, even when co-ingested with protein. We conclude that alcohol ingestion suppresses the anabolic response in skeletal muscle and may therefore impair recovery and adaptation to training and/or subsequent performance.
|Journal citation||9 (2), pp. 1 - 9|
|Digital Object Identifier (DOI)||https://doi.org/10.1371/journal.pone.0088384|
|Open access||Open access|
|Page range||1 - 9|
|Research Group||Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre|
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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