Quené, A. (2018) Effect of breath holding in air in rest and during submaximal exercise on lactate level in water polo athletes. thesis, Medicine.
Full text available on request.Abstract
Introduction: An all-out starting strategy during moderate exercise leads to improvement of the performance of an athlete. However, the rise in blood lactate level that may accompany this start can negatively affect sport performance. It is unclear whether the oxygen deficit at the onset of exercise is the cause of this increased lactate level based on an anaerobic energy release. An oxygen-deficit situation can be simulated by breath holding. The aerobic energy release by consuming oxygen from oxygen stores other than the lungs must be taken into account in that situation. Objectives: The aim of this study was to explore the response of lactate level in capillary blood, oxygen saturation and heart rate to breath holding in air in rest and during submaximal exercise. Method: This study using a one-group design included eight female water polo athletes. All participants performed a test with a breath holding period in rest (60 s) and during steady-state submaximal exercise (30 s, 70W). During the test lactate level, oxygen saturation and heart rate were measured at eight different moments before and after breath holding in rest and during exercise. Results: Lactate level did not significantly increase after breath holding. In fact, a trend in lactate level decrease of 0.2 mmol/L was found in rest. After breath holding, the oxygen saturation decreased with 2% in rest (p=0.002) and the heart rate decreased with 30 bpm during submaximal exercise (p=0.015). Conclusion: Breath holding in air during submaximal exercise leads to a situation with an oxygen uptake deficit without resulting in a rise in lactate level. This provides evidence for an aerobic energy contribution during breath holding and very likely also during the oxygen uptake deficit at the onset of exercise.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Berkel, Dr. S. van and Enst, Dr. G.C. van and Brandon, Dr. T. and Department: and Department of Sports Medicine and Isala and Zwolle, the Netherlands |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 10:40 |
| Last Modified: | 25 Jun 2020 10:40 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/177 |
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