Lackner J R, Graybiel A
Aviat Space Environ Med. 1982 Aug;53(8):766-9.
Subjects exposed to periodic variations in gravitoinertial force (2-G peak) in parabolic flight maneuvers quickly come to perceive the peak force level as having decreased in intensity. By the end of a 40-parabola flight, the decrease in apparent force is approximately 40%. On successive flight days, the apparent intensity of the force loads seems to decrease as well, indicating a cumulative adaptive effect. None of the subjects reported feeling abnormally "flight" for more than a minute or two after return to 1-G background force levels. The pattern of findings suggests a context-specific adaptation to high-force levels.
在抛物线飞行机动中暴露于重力惯性力周期性变化（2G峰值）的受试者很快就会开始感觉到峰值力水平的强度有所下降。到40次抛物线飞行结束时，表观力的下降约为40%。在连续的飞行日中，力负荷的表观强度似乎也会下降，这表明存在累积适应性效应。在恢复到1G背景力水平后，没有受试者报告感觉异常“飞行”超过一两分钟。研究结果模式表明对高力水平存在特定情境的适应性。
