Exercise-induced arterial hypoxemia in female masters athletes.

Autor: Shiffman VJ; School of Kinesiology, The University of British Columbia, Vancouver, BC, Canada. Electronic address: viviana.shiffman@ubc.ca., Rose P; Department of Anesthesia, Vancouver Coastal Health, Vancouver, BC, Canada., Hughes BG; Department of Anesthesia, Vancouver Coastal Health, Vancouver, BC, Canada., Koehle MS; School of Kinesiology, The University of British Columbia, Vancouver, BC, Canada; Division of Sport and Exercise Medicine, University of British Columbia, Vancouver, BC, Canada., McKinney J; Division of Cardiology, University of British Columbia, Vancouver, BC, Canada., McKenzie DC; School of Kinesiology, The University of British Columbia, Vancouver, BC, Canada; Division of Sport and Exercise Medicine, University of British Columbia, Vancouver, BC, Canada., Leahy MG; School of Kinesiology, The University of British Columbia, Vancouver, BC, Canada., Kipp S; School of Kinesiology, The University of British Columbia, Vancouver, BC, Canada., Peters CM; School of Kinesiology, The University of British Columbia, Vancouver, BC, Canada., Sheel AW; School of Kinesiology, The University of British Columbia, Vancouver, BC, Canada.
Jazyk: angličtina
Zdroj: Respiratory physiology & neurobiology [Respir Physiol Neurobiol] 2023 Sep; Vol. 315, pp. 104099. Date of Electronic Publication: 2023 Jun 28.
DOI: 10.1016/j.resp.2023.104099
Abstrakt: The purpose of the study was to characterize exercise induced arterial hypoxemia (EIAH) in female masters athletes (FMA). We hypothesized that FMA would experience EIAH during treadmill running. Eight FMA (48-57 years) completed pulmonary function testing and an incremental exercise test until exhaustion (V̇O 2 max⁡ = 45.7 ± 6.5, range:35-54 ml/kg/min). On a separate day, the participants were instrumented with a radial arterial catheter and an esophageal temperature probe. Participants performed three to four constant load exercise tests at 60-70 %, 75 %, 90 %, 95 %, and 100 % of maximal oxygen uptake while sampling arterial blood and recording esophageal temperature. We found that FMA decrease their partial pressure of oxygen (86.0 ± 7.6, range:73-108 mmHg), arterial saturation (96.2 ± 1.2, range:93-98 %), and widen their alveolar to arterial oxygen difference (23.2 ± 8.8, range:5-42 mmHg) during all exercise intensities however, with variability in terms of severity and pattern. Our findings suggest that FMA experience EIAH however aerobic fitness appears unrelated to occurrence or severity (r = 0.13, p = 0.756).
Competing Interests: Declaration of Competing Interest The authors declare that they have no conflicts of interest.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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