Whey protein supplementation does not accelerate recovery from a single bout of eccentric exercise

Luuk Hilkens, Jolien De Bock, Joris Kretzers, Alwine F M Kardinaal, Esther G Floris-Vollenbroek, Petra A M J Scholtens, Astrid M H Horstman, Luc J C van Loon, Jan-Willem van Dijk

Research output: Contribution to journalArticle

Abstract

The current double blind, randomized, placebo-controlled trial with two parallel groups aimed to assess the impact of whey protein supplementation on recovery of muscle function and muscle soreness following eccentric exercise. During a 9-day period, forty recreationally active males received twice daily supplementation with either whey protein (PRO; 60 g/day) or an iso-energetic amount of carbohydrate (CON). Muscle function and soreness were assessed before, and 0, 3, 24, 48, and 72 h after performing 100 drop jumps. Recovery of isometric maximal voluntary contraction (MVC) did not significantly differ between groups (timextreatment, P = 0.56). In contrast, the recovery of isokinetic MVC at 90°·s-1 was faster in CON as opposed to PRO (timextreatment interaction, P = 0.044). Recovery of isokinetic MVC at 180°·s-1 was also faster in CON as opposed to PRO (timextreatment interaction, P = 0.011). Recovery of countermovement jump performance did not differ between groups (timextreatment interaction, P = 0.52). Muscle soreness, CK and CRP showed a transient increase over time (P < 0.001), with no differences between groups. In conclusion, whey protein supplementation does not accelerate recovery of muscle function or attenuate muscle soreness and inflammation during 3 days of recovery from a single bout of eccentric exercise.

Original languageEnglish
Pages (from-to)322-331
Number of pages10
JournalJournal of sports sciences
Volume39
Issue number3
DOIs
Publication statusPublished - Feb 2021

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