Mucosal immunity and upper respiratory tract symptoms in recreational endurance runners.

摘要: The present study investigated the effects of a 12-week endurance-training intervention on salivary proteins and upper respiratory tract symptoms (URS) in 25 young men. Saliva samples recreational male endurance runners (age 34.6 years, body mass index = 23.8 kg·m(-2), peak aerobic capacity 47.2 mL·kg(-1)·min(-1)) were collected before (PRE) after (POST) training intervention, fasting state, as well both maximal incremental treadmill run. consisted continuous interval sessions, 4-6 times per week based polarized approach. Participants filled Wisconsin Upper Respiratory Symptom Survey-21 retrospectively divided into 2 groups according to whether they reported URS (URS group, n 13) or not (HEALTHY 12). Basal immunoglobulin A (sa-sIgA) levels significantly higher (+70%, p < 0.05) HEALTHY group at PRE POST whereas no significant differences observed M, G, lysozyme, α-amylase activity (sAA). Sa-sIgA concentration correlated with number sick-days (R -0.755, 0.001) all subjects. run acutely increased sAA (p (200%) (166%) but group. This demonstrated that subjects, who experienced during 12 weeks progressive had lower basal sa-sIgA experimental period. In addition sa-sIgA, acute response exercise might be possible determinant susceptibility runners.