The studies cited above were characterized by a short exposure time to hypoxia (<1 h) at fixed altitudes Victims step 1 and you will 3 answered that have beliefs anywhere between ninety so you’re able to 93% for the […]
The importance of exposure time was emphasized in a review of five long-term hypoxia exposure studies (>1 h) which did not show any differences in SpO2 between NH and HH,(Tucker et al., 1983; Roach et al., 1996; Loeppky et al., 1997, 2005; Faiss et al., 2013) possibly due to acclimatization to hypoxia (Coppel et al., 2015). What sets our study apart from prior research is that the study design incorporated a long exposure time at increasing altitudes with movement and exercise performance utilizing actual mountaineering conditions.
Next, AMS gets completely reveal just after six–96 h from hypoxic publicity during the reasonable in order to highest altitudes (Debevec and you may Millet, 2014) Therefore, the brand new seven-h coverage stage utilized in our very own investigation structure could have had an impact on the latest participants’ knowledge regarding AMS during the NH and you may HH
Just like the each other participants was in fact people, a most likely cause regarding the looking for can be increased breathing push due to high progesterone account on these members.
In previous short-term as well as in long-term exposure studies, heart rate values tended to be higher in HH, but showed inconsistent results compared to NH (Savourey et al., 1997). In their first study, Savourey et al. recorded HR values that were significantly higher in HH, whereas in their second study no significant differences in HR were found, despite using a very similar protocol (Savourey et al., 2003, 2007). (more…)
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