A pilot study investigating reactive oxygen species production in capillary blood after a marathon and the influence of an antioxidant-rich beetroot juice

Tom Clifford*, Amy Bowman, Tess Capper, Dean M. Allerton, Emma Foster, Mark Birch-Machin, Georg Lietz, Glyn Howatson, Emma J. Stevenson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We report that reactive oxygen species (ROS), as measured in capillary blood taken from the finger-tip, increased after a marathon (+128% P < 0.01; effect size = 1.17), indicating that this collection method might be useful for measuring ROS in field settings. However, mitochondrial DNA damage remained unchanged. Beetroot juice, taken before and after exercise, was unable to mitigate exercise-induced ROS production, questioning its use an antioxidant-rich food.

Original languageEnglish
Pages (from-to)303-306
Number of pages4
JournalApplied Physiology, Nutrition and Metabolism
Volume43
Issue number3
Early online date10 Nov 2017
DOIs
Publication statusPublished - Mar 2018

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