In:
International Journal of Sport Nutrition and Exercise Metabolism, Human Kinetics, Vol. 30, No. 4 ( 2020-07-1), p. 287-294
Abstract:
New Zealand blackcurrant (NZBC) contains anthocyanins, known to moderate blood flow and display anti-inflammatory properties that may improve recovery from exercise-induced muscle damage. The authors examined whether NZBC extract supplementation enhances recovery from exercise-induced muscle damage after a half-marathon race. Following a randomized, double-blind, independent groups design, 20 (eight women) recreational runners (age 30 ± 6 years, height 1.73 ± 0.74 m, body mass 68.5 ± 7.8 kg, half-marathon finishing time 1:56:33 ± 0:18:08 hr:min:s) ingested either two 300-mg/day capsules of NZBC extract (CurraNZ ™ ) or a visually matched placebo, for 7 days prior to and 2 days following a half-marathon. Countermovement jump performance variables, urine interleukin-6, and perceived muscle soreness and fatigue were measured pre, post, and at 24 and 48 hr after the half-marathon and analyzed using a mixed linear model with statistical significance set a priori at p 〈 .05. The countermovement jump performance variables were reduced immediately post-half-marathon ( p 〈 .05), with all returning to pre-half-marathon levels by 48 hr, except the concentric and eccentric peak force and eccentric duration, with no difference in response between groups ( p 〉 .05). Urine interleukin-6 increased 48-hr post-half-marathon in the NZBC group only ( p 〈 .01) and remained unchanged compared with pre-half-marathon levels in the placebo group ( p 〉 .05). Perceived muscle soreness and fatigue increased immediately post-half-marathon ( p 〈 .01) and returned to pre-half-marathon levels by 48 hr, with no difference between groups ( p 〉 .05). Supplementation with NZBC extract had no effect on the recovery of countermovement jump variables and perceptions of muscle soreness or fatigue following a half-marathon in recreational runners.
Type of Medium:
Online Resource
ISSN:
1526-484X
,
1543-2742
DOI:
10.1123/ijsnem.2019-0312
Language:
Unknown
Publisher:
Human Kinetics
Publication Date:
2020
SSG:
31
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