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      The physiological response to cold-water immersion following a mixed martial arts training session.

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          Abstract

          Combative sport is one of the most physically intense forms of exercise, yet the effect of recovery interventions has been largely unexplored. We investigated the effect of cold-water immersion on structural, inflammatory, and physiological stress biomarkers following a mixed martial arts (MMA) contest preparation training session in comparison with passive recovery. Semiprofessional MMA competitors (n = 15) were randomly assigned to a cold-water immersion (15 min at 10 °C) or passive recovery protocol (ambient air) completed immediately following a contest preparation training session. Markers of muscle damage (urinary myoglobin), inflammation/oxidative stress (urinary neopterin + total neopterin (neopterin + 7,8-dihydroneopterin)), and hypothalamic-pituitary axis (HPA) activation (saliva cortisol) were determined before, immediately after, and 1, 2, and 24 h postsession. Ratings of perceived soreness and fatigue, counter movement jump, and gastrointestinal temperature were also measured. Concentrations of all biomarkers increased significantly (p < 0.05) postsession. Cold water immersion attenuated increases in urinary neopterin (p < 0.05, d = 0.58), total neopterin (p < 0.05, d = 0.89), and saliva cortisol after 2 h (p < 0.05, d = 0.68) and urinary neopterin again at 24 h (p < 0.01, d = 0.57) in comparison with passive recovery. Perceived soreness, fatigue, and gastrointestinal temperatures were also lower for the cold-water immersion group at several time points postsession whilst counter movement jump did not differ. Combative sport athletes who are subjected to impact-induced stress may benefit from immediate cold-water immersion as a simple recovery intervention that reduces delayed onset muscle soreness as well as macrophage and HPA activation whilst not impairing functional performance.

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          Author and article information

          Journal
          Appl Physiol Nutr Metab
          Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme
          Canadian Science Publishing
          1715-5320
          1715-5312
          May 2017
          : 42
          : 5
          Affiliations
          [1 ] a Program in Physical Therapy, Department of Rehabilitation Medicine, University of Minnesota, Minneapolis, MN, USA.
          [2 ] b Free Radical Biochemistry Laboratory, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
          [3 ] c School of Health Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
          [4 ] d Steroid and Immunobiochemistry Laboratory, Canterbury Health Laboratories, P.O. Box 151, Christchurch, New Zealand.
          [5 ] e Department of Radiology, University of Otago, Christchurch, New Zealand.
          Article
          10.1139/apnm-2016-0582
          28177718

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