Spencer J, Findling A, Bachrach A J, Gelfand R, Lambertsen C J, Karreman G
J Appl Physiol Respir Environ Exerc Physiol. 1979 Oct;47(4):804-12. doi: 10.1152/jappl.1979.47.4.804.
Comparison was made between intentional and postural tremor amplitudes with a 2-to 50-Hz bandwidth in four men rapidly compressed from surface to 13.1, 25.2, and 37.3 ATA in 4 h while breathing helium-oxygen mixtures (Predictive Studies IV, University of Pennsylvania). Excursions with compression rates of 20 and 40 ft/min were then made to 49.4 ATA on exposure days 2 and 3, returning to saturation at 37.3 ATA for 6 additional days. During compression from 25.2 to 37.3 ATA, there were increases in tremor amplitudes for both intentional and postural tremor in the 3-to 7-Hz and 8- to 12-Hz ranges. Both types of tremor showed increases in amplitudes at 49.4 ATA on exposure days 2 and 3. Amplitude changes in postural tremor, which occurred only on the fastest compression to 49.4 ATA, were less evident than those in intentional tremor during the remaining dive profile, and adaptation to pressure exposure could be defined by day 8. Intentional tremors did not show adaptation at pressure.
在4小时内，让4名男性从常压迅速加压至13.1、25.2和37.3个绝对大气压（ATA），同时呼吸氦氧混合气体（宾夕法尼亚大学预测研究IV），比较了2至50赫兹带宽下的意向性震颤和姿势性震颤幅度。然后在暴露的第2天和第3天，以20和40英尺/分钟的压缩速率加压至49.4 ATA，再在37.3 ATA恢复饱和状态并持续6天。在从25.2 ATA压缩至37.3 ATA的过程中，3至7赫兹和8至12赫兹范围内的意向性震颤和姿势性震颤的震颤幅度均有所增加。在暴露的第2天和第3天，两种类型的震颤在49.4 ATA时幅度都有所增加。仅在最快加压至49.4 ATA时出现的姿势性震颤幅度变化，在其余潜水过程中比意向性震颤的变化不太明显，并且到第8天可以确定对压力暴露的适应性。意向性震颤在压力下未显示出适应性。
