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Wachsmuth, Nadine ; Kley, Marlen ; Spielvogel, Hilde ; Aughey, Robert J. ; Gore, Christopher J. ; Bourdon, Pitre C. ; Hammond, Kristal ; Sargent, Charli ; Roach, Gregory D. ; Soria Sanchez, Rudy ; Claros, Jesus C. Jimenez ; Schmidt, Walter ; Garvican-Lewis, Laura A.:
Changes in blood gas transport of altitude native soccer players near sea-level and sea-level native soccer players at altitude (ISA3600).
In: British Journal of Sports Medicine.
Bd. 47
(2013)
Heft Suppl. 1
.
- S. i93-i99.
ISSN 1473-0480
DOI: https://doi.org/10.1136/bjsports-2013-092761
Abstract
OBJECTIVES: The optimal strategy for soccer teams playing at altitude is not known, that is, 'fly-in, fly-out' versus short-term acclimatisation. Here, we document changes in blood gas and vascular volumes of sea-level (Australian, n=20) and altitude (Bolivian, n=19) native soccer players at 3600 m. METHODS: Haemoglobin-oxygen saturation (Hb-sO(2)), arterial oxygen content (CaO(2)), haemoglobin mass (Hbmass), blood volume (BV) and blood gas concentrations were measured before descent (Bolivians only), together with aerobic fitness (via Yo-YoIR1), near sea-level, after ascent and during 13 days at 3600 m. RESULTS: At baseline, haemoglobin concentration [Hb] and Hbmass were higher in Bolivians (mean +/- SD; 18.2 +/- 1.0 g/dL, 12.8 +/- 0.8 g/kg) than Australians (15.0 +/- 0.9 g/dL, 11.6 +/- 0.7 g/kg; both p </= 0.001). Near sea-level, [Hb] of Bolivians decreased to 16.6 +/- 0.9 g/dL, but normalised upon return to 3600 m; Hbmass was constant regardless of altitude. In Australians, [Hb] increased after 12 days at 3600 m to 17.3 +/- 1.0 g/dL; Hbmass increased by 3.0 +/- 2.7% (p </= 0.01). BV decreased in both teams at altitude by approximately 400 mL. Arterial partial pressure for oxygen (PaO(2)), Hb-sO(2) and CaO(2) of both teams decreased within 2 h of arrival at 3600 m (p </= 0.001) but increased over the following days, with CaO(2) overcompensated in Australians (+1.7 +/- 1.2 mL/100 mL; p </= 0.001). Yo-YoIR1 was lower on the 3rd versus 10th day at altitude and was significantly related to CaO(2). CONCLUSIONS: The marked drop in PaO(2) and CaO(2) observed after ascent does not support the 'fly-in, fly-out' approach for soccer teams to play immediately after arrival at altitude. Although short-term acclimatisation was sufficient for Australians to stabilise their CaO(2) (mostly due to loss of plasma volume), 12 days appears insufficient to reach chronic levels of adaption
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | adaption; altitude; ARTERIAL; arterial oxygen content; blood; blood gas; blood volume; BLOOD-VOLUME; fitness; Germany; haemoglobin; haemoglobin concentration; Haemoglobin mass; MASS; method; methods; native; OXYGEN; oxygen content; Partial Pressure; physiology; PLASMA; plasma volume; PLASMA-VOLUME; PLAYERS; PRESSURE; SEA-LEVEL; SHORT-TERM; Soccer; Sport; SPORTS; STRATEGIES; STRATEGY; TRANSPORT; VOLUME; VOLUMES |
| Institutionen der Universität: | Fakultäten > Kulturwissenschaftliche Fakultät > Institut für Sportwissenschaft > Professur Sportwissenschaft IV (Sportmedizin/Sportphysiologie) Fakultäten > Kulturwissenschaftliche Fakultät > Ehemalige Professoren > Professur Sportwissenschaft IV (Sportmedizin/Sportphysiologie) - Univ.-Prof. Dr. Walter Schmidt Fakultäten Fakultäten > Kulturwissenschaftliche Fakultät Fakultäten > Kulturwissenschaftliche Fakultät > Institut für Sportwissenschaft Fakultäten > Kulturwissenschaftliche Fakultät > Ehemalige Professoren |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit |
| Eingestellt am: | 22 Nov 2017 09:24 |
| Letzte Änderung: | 10 Mai 2022 09:30 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/40442 |