AI Article Synopsis
- This study investigated the impact of sleeping altitude on acute mountain sickness (AMS) among climbers on Mt. Fuji, involving a large sample of 1,932 participants.
- The overall prevalence of AMS was found to be 31.6%, with findings suggesting that staying overnight at higher altitudes (above 2870 m) significantly increased the likelihood of experiencing AMS, while factors like sex and age did not play a significant role.
- The conclusion emphasizes that overnight stays at higher elevations are linked to a higher prevalence of AMS, highlighting the importance of altitude considerations for climbers.
Article Abstract
Unlabelled: Horiuchi, Masahiro, Tadashi Uno, Junko Endo, Yoko Handa, and Tatsuya Hasegawa. Impact of sleeping altitude on symptoms of acute mountain sickness on Mt. Fuji. High Alt Med Biol. 19:193-200, 2018.
Aims: We sought to investigate the factors influencing acute mountain sickness (AMS) on Mt. Fuji in Japan, in particular, to assess the effects of sleeping altitude, by means of a questionnaire survey. This study involved 1932 participants who climbed Mt. Fuji, and obtained information regarding sex, age, and whether participants stayed at the mountain lodges. The AMS survey excluded the perceived sleep difficulties assessed with the Lake Louise Scoring (LLS) system for all climbers.
Results: The overall prevalence of AMS was 31.6% for all participants (LLS score ≥3 with headache, excluding sleep difficulties). A univariate analysis revealed that overnight stay at Mt. Fuji was associated with an increased prevalence of AMS, but that sex and age were not. For overnight lodgers, the mean sleeping altitude in participants with AMS was slightly higher than that in participants without AMS (p < 0.05). Moreover, participants who stayed above 2870 m were more likely to experience AMS than those who stayed below 2815 m (p < 0.001), but sex and age were not significantly associated with the probability of experiencing AMS.
Conclusions: Staying overnight at a mountain lodge, especially one above 2870 m, may be associated with an increased prevalence of AMS on Mt. Fuji.
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| http://dx.doi.org/10.1089/ham.2017.0106 | DOI Listing |
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