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Abstract Title:

Black Currant Nectar Reduces Muscle Damage and Inflammation Following a Bout of High-Intensity Eccentric Contractions.

Abstract Source:

J Diet Suppl. 2016 ;13(1):1-15. Epub 2014 Aug 25. PMID: 25153307

Abstract Author(s):

Alexander T Hutchison, Emily B Flieller, Kimber J Dillon, Betsy D Leverett

Article Affiliation:

Alexander T Hutchison

Abstract:

This investigation determined the efficacy of black currant nectar (BCN) in reducing symptoms of exercise-induced muscle damage (EIMD). Sixteen college students were randomly assigned to drink either 16 oz of BCN or a placebo (PLA) twice a day for eight consecutive days. A bout of eccentric knee extensions (3× 10 sets @ 115% of 1RM) was performed on the fourth day. Outcome measures included muscle soreness (subjective scale from 0 to 10) and blood markers of muscle damage (creatine kinase, CK), inflammation (interleukin-6, IL-6), and oxygen radical absorbance capacity (ORAC). Although there were no differences in reported soreness between groups, consumption of BCN reduced CK levels at both 48 (PLA = 82.13% vs. BCN = -6.71%, p = .042) and 96 h post exercise (PLA = 74.96% vs. BCN = -12.11%, p = .030). The change in IL-6 was higher in the PLA group (PLA = 8.84% vs. BCN = -6.54%, p = .023) at 24 h post exercise. The change in ORAC levels was higher in the treatment group (BCN = 2.68% vs. PLA = -6.02%, p = .039) at 48 h post exercise. Our results demonstrate that consumption of BCN prior to and after a bout of eccentric exercise attenuates muscle damage and inflammation.

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