Consumption of New Zealand blackcurrant extract improves recovery from exercise-induced muscle damage in non-resistance trained men and women: a double-blind randomised trial

HUNT, Julie E.A., COELHO, Mariana O.C., BUXTON, Sean, BUTCHER, Rachel, FORAN, Daniel, ROWLAND, Daniel, GURTON, William, MACRAE, Heather, JONES, Louise, GAPPER, Kyle S., MANDERS, Ralph J.F. and KING, David G. (2021). Consumption of New Zealand blackcurrant extract improves recovery from exercise-induced muscle damage in non-resistance trained men and women: a double-blind randomised trial. Nutrients, 13 (8): 2875.

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Abstract

Blackcurrant is rich in anthocyanins that may protect against exercise-induced muscle damage (EIMD) and facilitate a faster recovery of muscle function. We examined the effects of New Zealand blackcurrant (NZBC) extract on indices of muscle damage and recovery following a bout of strenuous isokinetic resistance exercise. Using a double-blind, randomised, placebo controlled, parallel design, twenty-seven healthy participants received either a 3 g·day-1 NZBC extract (n = 14) or the placebo (PLA) (n = 13) for 8 days prior to and 4 days following 60 strenuous concentric and eccentric contractions of the biceps brachii muscle on an isokinetic dynamometer. Muscle soreness (using a visual analogue scale), maximal voluntary contraction (MVC), range of motion (ROM) and blood creatine kinase (CK) were assessed before (0 h) and after (24, 48, 72 and 96 h) exercise. Consumption of NZBC extract resulted in faster recovery of baseline MVC (p = 0.04), attenuated muscle soreness at 24 h (NZBC: 21 ± 10 mm vs. PLA: 40 ± 23 mm, p = 0.02) and 48 h (NZBC: 22 ± 17 vs. PLA: 44 ± 26 mm, p = 0.03) and serum CK concentration at 96 h (NZBC: 635 ± 921 UL vs. PLA: 4021 ± 4319 UL, p = 0.04) following EIMD. Consumption of NZBC extract prior to and following a bout of eccentric exercise attenuates muscle damage and improves functional recovery. These findings are of practical importance in recreationally active and potentially athletic populations, who may benefit from accelerated recovery following EIMD.

Item Type:	Article
Uncontrolled Keywords:	Muscle, Skeletal; Humans; Ribes; Fruit; Plant Extracts; Pain Measurement; Treatment Outcome; Double-Blind Method; Recovery of Function; Muscle Contraction; Time Factors; Adult; England; Female; Male; Creatine Kinase, MM Form; Resistance Training; Young Adult; Myalgia; Biomarkers; exercise-induced muscle damage; recovery; oxidative stress; anthocyanin; New Zealand blackcurrant; New Zealand blackcurrant; anthocyanin; exercise-induced muscle damage; oxidative stress; recovery; Adult; Biomarkers; Creatine Kinase, MM Form; Double-Blind Method; England; Female; Fruit; Humans; Male; Muscle Contraction; Muscle, Skeletal; Myalgia; Pain Measurement; Plant Extracts; Recovery of Function; Resistance Training; Ribes; Time Factors; Treatment Outcome; Young Adult; 0908 Food Sciences; 1111 Nutrition and Dietetics; 3202 Clinical sciences; 3210 Nutrition and dietetics; 4206 Public health
Identification Number:	https://doi.org/10.3390/nu13082875
SWORD Depositor:	Symplectic Elements
Depositing User:	Symplectic Elements
Date Deposited:	08 Aug 2023 11:44
Last Modified:	11 Oct 2023 12:46
URI:	https://shura.shu.ac.uk/id/eprint/32008

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