Principles of exercise testing and interpretation

Background: To compare the average of indirectly measured oxygen consumption between military with acute mountain sickness (AMS) and military undiagnosed using the criteria of Lake Louise scale. Material and methods: A case control study with data collection between 2008 and 2009 on High Mountain 3050 MASL, Bogota DC, Colombia. 20m-shuttle run test for measuring maximum indirect oxygen consumption (VO ) and VO per weight (VO2/Kg) was performed. We applied the Louise 2 2 questionnaire for diagnosis of acute mountain sickness. We got 62 individuals with AMS and 61 individuals without the disease. We made a description of the vital variables and then a bivariate analysis with vital and relevant medical history variables with the VO and VO /Kg as dependent variable. 2 2 Results:Of 123 military, we got 62 individuals with AMS (cases) and 61 without the disease (controls), most of them with mild AMS (35%), with a median of exposure time of 10 days (QIR:10). Of the total, 30.1% had a history of smoking and the absence of cigarette consumption showed an OR: 2.33 CI 95% 1.05-5.17 with the presence of AMS. We calculated that the history of ascent to altitudes >3050 MASL has an OR: 0.41 (CI 95% 0.19-0.87) for the disease develop. No significant difference in maximum VO and VO /Kg between 2 2 sick and healthy individuals with p=0.46 and p=0.34 were found respectively. Conclusion: The measurement of maximum indirect VO don`t show any difference in military with and 2 without AMS at 3050 MASL, history of smoking and previous ascent in altitude are shown as important background for no developing symptoms of AMS. Further studies are needed to corroborate our findings of these two specific points.

Risdoni Cl

Papers

Consumo de oxígeno (vo ) indirecto en militares con