McDowell S L, Chaloa K, Housh T J, Tharp G D, Johnson G O
Center for Youth Fitness and Sports Research, University of Nebraska-Lincoln.
Eur J Appl Physiol Occup Physiol. 1991;63(2):108-11. doi: 10.1007/BF00235178.
Two experiments were performed to examine salivary immunoglobulin A (s-IgA) responses to varying levels of exercise intensity and duration. For experiment 1, 9 college men (mean age, SD = 23.56, 1.64 years) completed treadmill runs of 15, 30, and 45 min at approximately 60% of maximum oxygen consumption (VO2max). For experiment 2, 9 other college men (mean age, SD = 23.67, 2.0 years) ran for 20 min at approximately 50, 65 and 80% of VO2max. Unstimulated salivary samples were collected before, and immediately, 1 and 2 h after the exercise. Samples were assayed for s-IgA using an enzyme-linked immunosorbent assay. Mean s-IgA levels did not change significantly (P greater than 0.05) at any of the post-exercise collection times when compared to pre-exercise levels. The results of this investigation indicated that running at intensities of 50-80% of VO2max and for durations of 15-45 min did not affect s-IgA levels.
进行了两项实验，以研究唾液免疫球蛋白A（s-IgA）对不同运动强度和持续时间的反应。实验1中，9名大学男性（平均年龄，标准差=23.56,1.64岁）在约60%最大耗氧量（VO2max）的强度下，在跑步机上分别跑15、30和45分钟。实验2中，另外9名大学男性（平均年龄，标准差=23.67,2.0岁）在约50%、65%和80%VO2max的强度下跑20分钟。在运动前、运动后即刻、运动后1小时和2小时收集非刺激性唾液样本。使用酶联免疫吸附测定法检测样本中的s-IgA。与运动前水平相比，在任何运动后收集时间点，s-IgA的平均水平均无显著变化（P>0.05）。本研究结果表明，在50%-80%VO2max的强度下跑15-45分钟不会影响s-IgA水平。
