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Increased running speed and previous cramps rather than dehydration or serum sodium changes predict exercise-associated muscle cramping: a prospective cohort study in 210 Ironman triathletes
  1. Martin P Schwellnus1,2,
  2. Nichola Drew1,
  3. Malcolm Collins1,2,3
  1. 1UCT/MRC Research Unit for Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Cape Town, South Africa
  2. 2International Olympic Committee (IOC) Research Centre, Cape Town, South Africa
  3. 3South African Medical Research Council, Cape Town, South Africa
  1. Correspondence to Martin P Schwellnus, UCT/MRC Research Unit for Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, 3rd Floor, Sports Science Institute of South Africa, Boundary Road, Newlands, Cape Town 7700, South Africa; martin.schwellnus{at}uct.ac.za

Footnotes

  • Funding This study was supported in part by funds from Discovery Health, the South African Medical Research Council (MRC) and the University of Cape Town Staff Research Fund.

  • Competing interests None.

  • Ethics approval This study was conducted with the approval of the Research Ethics Committee, Faculty of Health Sciences, University of Cape Town.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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Footnotes

  • Funding This study was supported in part by funds from Discovery Health, the South African Medical Research Council (MRC) and the University of Cape Town Staff Research Fund.

  • Competing interests None.

  • Ethics approval This study was conducted with the approval of the Research Ethics Committee, Faculty of Health Sciences, University of Cape Town.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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