Microbial and immunological responses relative to high-altitude exposure in mountaineers

Article Abstract:

An attempt is made to examine whether exposure to high altitude may be associated with alterations in the composition of the fecal microflora in mountaineers during a German expedition to Num Ri (6677 m), the peak situated about 10 km southeast of Mount Everest. It is concluded that changes in composition of intestinal microbiota may be associated with indicators of an immunological challenge and may result in an increased health risk of mountaineers during exposure to very high altitude.

United States, Hypoxia, Anoxia, C-reactive protein, Mountaineers

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Marathons in altitude

Article Abstract:

Elite marathon runners experience only a slightly lower maximal aerobic power (VO 2max) at high altitudes than at sea level. Compared to good runners, elite runners maintain a higher percentage of VO 2max which ensures a consistently better performance. High altitude running varied also with respect to uneven paths and the mechanical work rate of breathing.

Research, Measurement, Physiological aspects, Environmental aspects, Oxygen, Oxygen in the body, Marathon running, Altitude, Influence of, Acclimatization, Acclimatization (Biology)

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Brain magnetic resonance imaging (MRI) and neurological changes after a single high altitude climb

Article Abstract:

The effects of high altitude mountain climbing on the brain are examined, using magnetic resonance imaging. Contrary to previous reports, no evidence of neurological changes in the brain other than mountain sickness during the climb itself is found.

Diagnosis, Risk factors, Magnetic resonance imaging, Cerebral edema, Mountain sickness, Altitude sickness, Neurologic examination

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