Effects of Post-Exercise Whey Protein Consumption on Recovery Indices in Adolescent Swimmers

Brandon J. McKinlay, Alexandros Theocharidis, Tony Adebero, Nigel Kurgan, Val A. Fajardo, Brian D. Roy, Andrea R. Josse, Heather M. Logan-Sprenger, Bareket Falk and Panagiota Klentrou
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Brandon J. McKinlay: Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
Alexandros Theocharidis: Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
Tony Adebero: Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
Nigel Kurgan: Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
Val A. Fajardo: Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
Brian D. Roy: Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
Andrea R. Josse: Centre for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
Heather M. Logan-Sprenger: Canadian Sport Institute Ontario, 857 Morningside Avenue, Toronto, ON M1C 0C7, Canada
Bareket Falk: Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
Panagiota Klentrou: Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada

IJERPH, 2020, vol. 17, issue 21, 1-12

Abstract: Purpose : This study examined the effect of whey protein consumption following high-intensity interval swimming (HIIS) on muscle damage, inflammatory cytokines and performance in adolescent swimmers. Methods : Fifty-four swimmers (11–17 years-old) were stratified by age, sex and body mass to a whey protein (PRO), isoenergetic carbohydrate (CHO) or a water/placebo (H 2 O) group. Following baseline blood samples (06:00 h) and a standardised breakfast, participants performed a maximal 200 m swim, followed by HIIS. A total of two post-exercise boluses were consumed following HIIS and ~5 h post-baseline. Blood and 200 m performance measurements were repeated at 5 h, 8 h and 24 h from baseline. Muscle soreness was assessed at 24 h. Creatine kinase (CK), interleukin-6 (IL-6), interleukin-10 (IL-10) and tumor necrosis factor-alpha (TNF-α) were measured in plasma. Results : No difference in 200 m swim performance was observed between groups. CK activity was elevated at 5 h compared to baseline and 24 h and at 8 h compared to all other timepoints, with no differences between groups. Muscle soreness was lower in PRO compared to H 2 O ( p = 0.04). Anti-inflammatory IL-10 increased at 8 h in PRO, while it decreased in CHO and H 2 O. Conclusions : Post-exercise consumption of whey protein appears to have no additional benefit on recovery indices following HIIS compared to isoenergetic amounts of carbohydrate in adolescent swimmers. However, it may assist with the acute-inflammatory response.

Keywords: inflammation; cytokines; muscle damage; muscle soreness; swimming performance; youth athletes; high-intensity interval swimming (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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