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Whey protein hydrolysate supplementation accelerates recovery from exercise-induced muscle damage in females

Lookup NU author(s): Professor Emma StevensonORCiD

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Abstract

© 2018, Canadian Science Publishing. All rights reserved. A number of different forms of protein and their analogues have been investigated for their efficacy in ameliorating exercise-induced muscle damage (EIMD) and recovery. Preliminary data regarding whey protein hydrolysate (WPH) supplementation are promising. However, its efficacy beyond acute eccentric/resistance exercise bouts or longer term training programmes are limited and all investigations have been conducted in male or mixed-sex groups. This study sought to elucidate whether the benefits of WPH previously reported can be demonstrated in females following repeated-sprint exercise. Twenty physically active females were assigned to consume 2 doses of 70 mL WPH or isoenergetic carbohydrate (CHO) for 4 days post-EIMD. Measures of muscle soreness, limb girth, flexibility, muscle function, and creatine kinase were collected before, immediately after, and 24, 48, and 72 h post exercise. Time effects were observed for all variables (p < 0.05) except limb girth, which is indicative of EIMD. Flexibility improved beyond baseline measures following WPH by 72 h, but had failed to recover in the CHO group (p = 0.011). Reactive strength index was higher throughout recovery in the WPH group compared with CHO (p = 0.016). Reductions in creatine kinase were greater following WPH compared with CHO at 48 h post-EIMD (p = 0.031). The findings suggest that 4-day supplementation of WPH is beneficial for reducing symptoms of EIMD and improving recovery of muscle function in physically active females.

Publication metadata

Author(s): Brown MA, Stevenson EJ, Howatson G

Publication type: Article

Publication status: Published

Journal: Applied Physiology, Nutrition, and Metabolism

Year: 2018

Volume: 43

Issue: 4

Pages: 324-330

Print publication date: 01/04/2018

Online publication date: 06/11/2017

Acceptance date: 03/10/2017

ISSN (print): 1715-5312

ISSN (electronic): 1715-5320

Publisher: Canadian Science Publishing

URL: https://doi.org/10.1139/apnm-2017-0412

DOI: 10.1139/apnm-2017-0412

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