Effect of protein quality on recovery after intense resistance training

Purpose The present study investigated the effects of high- versus low-quality protein supplementation on the regain of exercise performance during recovery from a period of high-intensity resistance training. Methods In a diet-controlled crossover study, 12 resistance-trained participants performed...

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Bibliographic Details
Published in:	European journal of applied physiology 2016-12, Vol.116 (11-12), p.2225-2236
Main Authors:	Rindom, E., Nielsen, M. H., Kececi, K., Jensen, M. E., Vissing, K., Farup, J.
Format:	Article
Language:	eng
Subjects:	Administration, Oral Biomedical and Life Sciences Biomedicine Dietary Proteins - administration & dosage Dietary Proteins - metabolism High-Intensity Interval Training - methods Human Physiology Humans Male Muscle Proteins Muscle Strength - physiology Muscle, Skeletal - physiology Occupational Medicine/Industrial Medicine Original Article Physical Endurance - physiology Recovery of Function - physiology Resistance Training - methods Single-Blind Method Sports Medicine Young Adult
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Summary:	Purpose The present study investigated the effects of high- versus low-quality protein supplementation on the regain of exercise performance during recovery from a period of high-intensity resistance training. Methods In a diet-controlled crossover study, 12 resistance-trained participants performed two identical training periods, with each training period including four sessions of high-intensity resistance exercise during 5 days, while receiving either high- or low-quality protein. Prior to and at 3, 24 and 48 h after the training periods, performance was evaluated in knee extensor and flexor isometric maximal voluntary contraction (MVC), counter-movement jumping height (CMJ), and peak and mean anaerobic power. In addition, prior to and at 48 h after the training periods, performance in time-to-exhaustion at 70 % of VO 2max (TTE) was evaluated. Results After the intense training periods, decrements in the order of 4–24 % were observed for MVC ext , CMJ, mean anaerobic power, and TTE. In particular for TTE, this decrement in exercise performance did not attain full recovery at 48 h post-exercise. The regain of exercise performance was not dictated by type of protein supplement. Conclusion The regain of muscle strength as well as anaerobic or aerobic performances were not markedly influenced by the type of protein supplement.
ISSN:	1439-6319 1439-6327