Tamir A, Burton R R, Forster E M
Crew Technology Division, USAF School of Aerospace Medicine, Brooks Air Force Base, TX 78235-5301.
Aviat Space Environ Med. 1988 Jan;59(1):54-6.
Six male subjects wearing anti-G suits were exposed to +4.5 Gz and +4.5-7 Gz simulated aerial combat maneuvers (SACM), sustained until terminated because of fatigue. Before and after each G exposure, venous blood was withdrawn (using the finger-prick method) and analyzed for lactate concentration. Five samples were taken serially, at 1, 3, 6, 10, and 20 min after each G exposure to determine the maximum (peak) level of blood lactate. Individual lactate levels varied, with peaks at 1, 3, and 6 min; however, group levels were maximum at 3 min after the G exposure. Maximum lactate levels (mean +/- S.D.) of 27.8 +/- 11.3 mg% and 42.7 +/- 19.4 mg% were found for the 4.5-G and SACM exposures, respectively. Lactate recoveries were a simple exponential function, with a half life of approximately 10 min. The relationship between these data, following G exposure, and those measured after aerobic physical activities, is discussed.
六名穿着抗荷服的男性受试者暴露于 +4.5 Gz 以及 +4.5 - 7 Gz 的模拟空战机动动作（SACM）中，持续进行直至因疲劳而终止。在每次承受过载之前和之后，采集静脉血（采用手指采血法）并分析乳酸浓度。在每次承受过载后的 1、3、6、10 和 20 分钟连续采集五个样本，以确定血乳酸的最高（峰值）水平。个体乳酸水平各不相同，峰值出现在 1、3 和 6 分钟；然而，组内水平在承受过载后 3 分钟时最高。对于 4.5 - G 和 SACM 暴露，最高乳酸水平（平均值 +/- 标准差）分别为 27.8 +/- 11.3 mg% 和 42.7 +/- 19.4 mg%。乳酸恢复呈简单指数函数，半衰期约为 10 分钟。本文讨论了这些承受过载后的数据与有氧体育活动后所测数据之间的关系。
