Lung Diffusion in a 14-Day Swimming Altitude Training Camp at 1850 Meters

Iker García, Franchek Drobnic, Teresa Galera, Victoria Pons and Ginés Viscor
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Iker García: Secció de Fisiologia, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Av. Diagonal, 643, E-08028 Barcelona, Spain
Franchek Drobnic: Medical Services Shenhua Greenland FC, Shanghai 201315, China
Teresa Galera: Secció de Fisiologia, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Av. Diagonal, 643, E-08028 Barcelona, Spain
Victoria Pons: Centre d’Alt Rendiment (CAR) de Sant Cugat, Av. Alcalde Barnils s/n, E-08173 Sant Cugat del Vallés, 08174 Barcelona, Spain
Ginés Viscor: Secció de Fisiologia, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Av. Diagonal, 643, E-08028 Barcelona, Spain

IJERPH, 2020, vol. 17, issue 10, 1-12

Abstract: Swimming exercise at sea level causes a transient decrease in lung diffusing capacity for carbon monoxide (DL CO ). The exposure to hypobaric hypoxia can affect lung gas exchange, and hypoxic pulmonary vasoconstriction may elicit pulmonary oedema. The purpose of this study is to evaluate whether there are changes in DL CO during a 14-day altitude training camp (1850 m) in elite swimmers and the acute effects of a combined training session of swimming in moderate hypoxia and 44-min cycling in acute normobaric severe hypoxia (3000 m). Participants were eight international level swimmers (5 females and 3 males; 17–24 years old; 173.5 ± 5.5 cm; 64.4 ± 5.3 kg) with a training volume of 80 km per week. The single-breath method was used to measure the changes in DL CO and functional gas exchange parameters. No changes in DL CO after a 14-day altitude training camp at 1850 m were detected but a decrease in alveolar volume (VA; 7.13 ± 1.61 vs. 6.50 ± 1.59 L; p = 0.005; d = 0.396) and an increase in the transfer coefficient of the lung for carbon monoxide (K CO ; 6.23 ± 1.03 vs. 6.83 ± 1.31 mL·min −1 ·mmHg −1 ·L −1 ; p = 0.038; d = 0.509) after the altitude camp were observed. During the acute hypoxia combined session, there were no changes in DL CO after swimming training at 1850 m, but there was a decrease in DL CO after cycling at a simulated altitude of 3000 m (40.6 ± 10.8 vs. 36.8 ± 11.2 mL·min −1 ·mmHg −1 ; p = 0.044; d = 0.341). A training camp at moderate altitude did not alter pulmonary diffusing capacity in elite swimmers, although a cycling session at a higher simulated altitude caused a certain degree of impairment of the alveolar–capillary gas exchange.

Keywords: pulmonary diffusing capacity; DL CO; altitude training; swimming; SIPO (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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