Approximately 12% to 30% of U.S. Air Force and U. S. Navy pilots flying high performance aircraft experience G-LOC.

• 但由于目前对反复高G暴露是否会带来严重危害尚不清楚，故对高性能战斗机飞行员在高G训练时体验G-LOC的科学性与安全性还存在异议。