Mori S, Watanabe S, Shimaoka K, Takabayashi A
Department of Aerospace Physiology, Nagoya University, Japan.
Jpn J Physiol. 1988;38(4):557-62. doi: 10.2170/jjphysiol.38.557.
Day-by-day changes in ventricular-ejection time/heart-rate ratio (VET/HR) and in ejection time index (ETI), determined by an impedance method in a decompression chamber, were more labile in the mountaineers who had experienced high altitude (above 6,000 m) within the past 1 year, and the ETI values in the first hypoxic exposure were significantly high in these subjects, though close to those of the non-experienced group in the later exposures, suggesting that the effect of hypoxic acclimation on cardiac function might remain at least 1 year after return to sea level.
通过阻抗法在减压舱中测定的心室射血时间/心率比值（VET/HR）和射血时间指数（ETI）的逐日变化，在过去1年内有过海拔6000米以上高原经历的登山者中更不稳定。在首次低氧暴露时，这些受试者的ETI值显著升高，不过在随后的暴露中接近未经历过高原的组，这表明低氧适应对心脏功能的影响在返回海平面后可能至少持续1年。
