Subscribe to RSS
Please copy the URL and add it into your RSS Feed Reader.
https://www.thieme-connect.de/rss/thieme/en/10.1055-s-00000028.xml
Int J Sports Med 1982; 03(1): 33-36
DOI: 10.1055/s-2008-1026059
DOI: 10.1055/s-2008-1026059
Ventilatory Work During Exercise at High Altitude
Further Information
Publication History
Publication Date:
14 March 2008 (online)
![](https://www.thieme-connect.de/media/sportsmed/198201/lookinside/thumbnails/10.1055-s-2008-1026059-1.jpg)
Abstract
Oxygen consumption, ventilation, and dynamic respiratory work were measured in three male subjects during cycling at 122 and 3500 m above sea level (ASL). At a given ventilation the dynamic respiratory work was 20% less at 3500 m ASL; this change was due to a decrease of airway resistance. At a given submaximal exercise intensity, the respiratory work was significantly higher at 3500 m ASL (+ 140%-180%); hence, the increase of ventilation was not compensated for by the decrease of airway resistance. At Vojimax the respiratory work was predicted to reach its maximal value at 5800 m ASL where it was 30% higher than at sea level.
Key words
cost of breathing - airway resistance - air density