Maximum exercise responses of men and women mountaineering trainees on induction to high altitude (4350 m) by trekking

Wilderness & Environmental Medicine
G BhaumikShri K S Chauhan

Abstract

Maximum aerobic capacity decreases at high altitude. This study was conducted to compare the changes in maximum aerobic capacity in men and women mountaineering trainees on induction to high altitude at 4350 m by trekking. Eight men and 8 women mountaineering trainees in a mountaineering course were selected for the study. The initial study was conducted at 2100 m (586 mm Hg) and then during 6 to 7 days of sojourn at 4350 m (435 mm Hg). Maximum oxygen consumption (VO(2max)), maximum heart rate (HR(max)), pulse arterial oxygen saturation (SaO(2)), and maximum ventilation (VE(max)) were measured. VO(2max), HR(max), duration of work (minutes), and SaO(2) saturation decreased significantly (P < .05) with increasing altitude in both sexes. Conversely, VE(max) and ventilatory equivalent (VE/VO(2)) increased significantly (P < .05). Men showed a relatively higher value of maximum exercise variables (total exercise time, exercise intensity, and VO(2)) than women trainees at both altitude locations. The decrement of VO(2max) was 13% in women and 17% in men (P < .05). The results indicate that the decrement of maximum aerobic capacity at 4350 m was less in women than in men under similar modes of ascent.

References

Jan 1, 1972·Respiration; International Review of Thoracic Diseases·L CudkowiczG Zubieta
Mar 18, 2005·High Altitude Medicine & Biology·Dominique JeanLorna G Moore

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Citations

Jan 26, 2010·International Journal of Biometeorology·Sanchari SinhaA K Tyagi
Apr 15, 2010·Netherlands Heart Journal : Monthly Journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation·S T de VriesA W J van 't Hof
Aug 8, 2014·High Altitude Medicine & Biology·Matthias FeuereckerAlexander Choukèr
Oct 6, 2010·High Altitude Medicine & Biology·Scott E McIntoshColin K Grissom
Oct 4, 2015·Scandinavian Journal of Medicine & Science in Sports·C MorabitoM A Mariggiò
Jul 23, 2016·Clinical Hemorheology and Microcirculation·Hwang-Woon MoonSang-Seok Nam
Feb 14, 2021·Sensors·Tobias DünnwaldMartin Burtscher

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