The acute response of salivary immunoglobulin A to moderate exercise in women

The acute response of salivary immunogobulin A (s-IgA) to 30 minutes of walking/jogging at 60% heart rate reserve was examined in 30 untrained women. The subjects (mean age = 21.9 years, SD = 3.1) participated in an average of 2.8 (SD =.58) days of exercise per week (days/wk) for an average of 161 (SD = 145) minutes per week (min/wk) prior to the study. The subjects were screened of recent illness and a stress inventory was completed. Perceived exertion rating (RPE), and heart rate (HR) were recorded at 0, 5, 10, 15, 20, 25, and 29 minutes during exercise on a treadmill. Unstimulated whole saliva samples were collected immediately prior (pre-s-IgA), immediately after (post-s-IgA) and 24 hours after exercise. Saliva samples were immediately frozen (...