The increase in minute ventilation during exercise led to higher inhalation of air pollution and, consequently, to exacerbation of health issues. Therefore, the intensity of exercise and the air pollution concentration of the environment could be determinant variables to poor outcomes. This study aimed to investigate the inhaled dose of particulate matter 2.5 (PM_2.5) during a moderate- and high-intensity interval exercise session performed in the morning and evening at different locations of Porto Alegre City. Eighteen individuals performed a cardiopulmonary exercise test, a moderate-intensity interval exercise (MIIE), and a high-intensity interval exercise (HIIE). Heart rate was monitored to estimate minute ventilation and total ventilation of the session. The concentration of PM_2.5 was measured during the morning (6-8a.m.) and evening (6-8p.m.) by fixed-site monitors placed at five points of Porto Alegre City. The PM_2.5 inhalation during MIIE and HIIE performed in the morning and evening in the monitoring points was estimated. HIIE showed higher minute ventilation (VE) (p=0.0048) and total ventilation did not differ between groups (p=0.4648). PM_2.5 concentrations were higher during the mornings (p<0.001). Monitored point 1 had higher levels of PM_2.5 in the morning and evening (p<0.001). The inhalation of PM_2.5 in the morning showed no difference in MIIE (p=0.8172) and HIIE (p=0.7306) groups among the points. In the evening, the inhalation of PM_2.5 was higher in point 1 in MIIE and HIIE group (p<0.001). MIIE and HIIE had higher inhalation of PM_2.5 in the morning than in the evening (p<0.001). Total ventilation of exercise is a crucial factor that contributes to the inhalation dose of air pollution.

运动过程中分钟通气量的增加导致吸入更多的空气污染，因此加剧了健康问题。因此，运动强度和环境中的空气污染浓度可能是导致不良结局的决定性变量。这项研究旨在调查早晚在阿雷格里港不同地点进行的中等强度和高强度间歇运动期间吸入颗粒物2.5（PM _2.5）的剂量。18个人进行了心肺运动测试，中等强度间歇运动（MIIE）和高强度间歇运动（HIIE）。监测心率以估计会议的分钟通气量和总通气量。PM _2.5浓度上午（6-8am）和晚上（6-8p.m。）的测量是通过位于阿雷格里港市五个地点的固定站点监控器进行的。估计在早，晚在监测点进行的MIIE和HIIE期间的PM _2.5吸入。HIIE显示较高的分钟通气量（VE）（p = 0.0048），各组之间的总通气量没有差异（p = 0.4648）。早晨PM _2.5浓度较高（p <0.001）。监测点1在早晚有较高的PM _2.5水平（p <0.001）。早晨吸入PM _2.5表明，各组之间的MIIE组（p = 0.8172）和HIIE组（p = 0.7306）没有差异。晚上，吸入PM _2.5MIIE和HIIE组的第1点较高（p <0.001）。MIIE和HIIE早上吸入PM _2.5高于晚上（p <0.001）。运动的全面通风是导致吸入空气污染剂量的关键因素。