In:
Applied Physiology, Nutrition, and Metabolism, Canadian Science Publishing
Abstract:
The aim of the present study was to assess the effect of beetroot juice supplementation (BEET) on neuromuscular fatigue etiology during simulated soccer match play. In a randomized, double-blind, crossover design, 13 soccer players completed the Loughborough Intermittent Shuttle Test (LIST). Players received either BEET (2*150ml; ~ 8mmol/l nitrate) or PLA for 7 days (6 days prior to the experimental session and on the day trial, 2h before LIST). Neuromuscular assessments were performed at baseline, 45min (half time: HT) and at 90min (final time: FT) following LIST. Maximal voluntary contraction (MVC) and twitch responses, delivered through electrical femoral nerve stimulation, were used to asses peripheral (quadriceps resting twitch force, Qtw,pot) and central fatigue (voluntary activation, VA). Compared to baseline, MVC Qtw,pot and VA values decreased in PLA and BEET conditions at HT and FT (p 〈 0.05). Compared to PLA, the decrease in MVC and Qtw,potat were significantly attenuated with BEET at HT and FT(p 〈 0.001). Likewise, BEET attenuated the decrease in VA at HT (p 〈 0.001, d = 1.3) and FT (p 〈 0.001, d = 1.5) compared to PLA condition. Chronic beetroot juice supplementation attenuates neuromuscular fatigue development during simulated soccer match and this is due to both central and peripheral factors. Consequently, chronic beetroot may optimize physical performance.
Type of Medium:
Online Resource
ISSN:
1715-5312
,
1715-5320
DOI:
10.1139/apnm-2023-0179
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
2023
SSG:
31
