Veltmeijer, MT and Eijsvogels, TM and Barteling, W and Verbeek-Knobbe, K and van Heerde, WL and Hopman, MT (2016) The impact of exercise-induced core body temperature elevations on coagulation responses. Journal of Science and Medicine in Sport. ISSN 1878-1861
Veltmeijer JSAMS-5-Full Paper.pdf - Accepted Version
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OBJECTIVES: Exercise induces changes in haemostatic parameters and core body temperature (CBT). We aimed to assess whether exercise-induced elevations in CBT induce pro-thrombotic changes in a dose-dependent manner. DESIGN: Observational study. METHODS: CBT and haemostatic responses were measured in 62 participants of a 15-km road race at baseline and immediately after finishing. As haemostasis assays are routinely performed at 37°C, we corrected the assay temperature for the individual's actual CBT at baseline and finish in a subgroup of n=25. RESULTS: All subjects (44±11 years, 69% male) completed the race at a speed of 12.1±1.8km/h. CBT increased significantly from 37.6±0.4°C to 39.4±0.8°C (p<0.001). Post-exercise, haemostatic activity was increased, as expressed by accelerated thrombin generation and an attenuated plasmin response. Synchronizing assay temperature to the subjects' actual CBT resulted in additional differences and stronger acceleration of thrombin generation parameters. CONCLUSIONS: This study demonstrates that exercise induces a prothrombotic state, which might be partially dependent on the magnitude of the exercise-induced CBT rise. Synchronizing the assay temperature to approximate the subject's CBT is essential to obtain more accurate insight in the haemostatic balance during thermoregulatory challenging situations. Finally, this study shows that short-lasting exposure to a CBT of 41.2°C does not result in clinical symptoms of severe coagulation. We therefore hypothesize that prolonged exposure to a high CBT or an individual-specific CBT threshold needs to be exceeded before derailment of the haemostatic balance occurs.
|Uncontrolled Keywords:||1106 Human Movement And Sports Science, 1117 Public Health And Health Services|
|Subjects:||R Medicine > RC Internal medicine > RC1200 Sports Medicine|
|Divisions:||Sport & Exercise Sciences|
|Date Deposited:||05 Apr 2016 14:39|
|Last Modified:||05 Apr 2016 14:39|
|DOI or Identification number:||10.1016/j.jsams.2016.01.007|
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