Respiratory Function Changes in a Wilderness Multisport Endurance Competition: A Prospective Case Study  Ian R. Rogers, MBBS, FACEM, Dale Speedy, MBChB, MSc, FRNZCGP, FACSP, FACSM, David Hillman, MBBS, FANZCA, Bill Noffsinger, BE, Sandy Inglis, MBChB, FACEM  Wilderness & Environmental Medicine  Volume 13, Issue 2, Pages 135-139 (June 2002) DOI: 10.1580/1080-6032(2002)013[0135:RFCIAW]2.0.CO;2 Copyright © 2002 Wilderness Medical Society Terms and Conditions

Figure 1 Forced expiratory volume in 1second (FEV1) and forced vital capacity (FVC) data obtained throughout the 8.5-hour race in the same competitor in successive years. The first measurement was made at baseline, the second immediately before the start of the race, and the others at intervals of approximately 45 minutes. The last measurement was made immediately after completion of the race. Wilderness & Environmental Medicine 2002 13, 135-139DOI: (10.1580/1080-6032(2002)013[0135:RFCIAW]2.0.CO;2) Copyright © 2002 Wilderness Medical Society Terms and Conditions

Figure 2 Maximum expiratory flow volume curves obtained during the second year of the study. The first measurement was made at baseline, the second immediately before the start of the race, and the others at intervals of approximately 45 minutes. The last measurement was made immediately after completion of the race. Wilderness & Environmental Medicine 2002 13, 135-139DOI: (10.1580/1080-6032(2002)013[0135:RFCIAW]2.0.CO;2) Copyright © 2002 Wilderness Medical Society Terms and Conditions