Whey protein supplementation does not accelerate recovery from a single bout of eccentric exercise. Issue 3 (1st February 2021)

• Record Type: Journal Article
• Authors: Hilkens, Luuk; De Bock, Jolien; Kretzers, Joris; Kardinaal, Alwine F. M.; Floris-Vollenbroek, Esther G.; Scholtens, Petra A. M. J.; Horstman, Astrid M. H.; van Loon, Luc J. C.; van Dijk, Jan-Willem
• Is Part Of: Journal of sports sciences. Volume 39:Issue 3(2021)
• Page Start: 322
• Page End: 331
• Publication Date: 2021-02-01
• Subjects: Eccentric exercise -- recovery -- muscle function -- muscle soreness -- protein supplementation -- carbohydrates; Sports -- Periodicals; Sports -- Physiological aspects -- Periodicals; Sports -- Psychological aspects -- Periodicals; 612.044
• DOI: 10.1080/02640414.2020.1820184
• Languages: English
• ISSNs: 0264-0414

Abstract

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.