Air pollution concentration and period of the day modulates inhalation of PM 2.5 during moderate- and high-intensity interval exercise.

Autor: Marmett B; Laboratory of Atmospheric Pollution, Graduate Program in Health Science, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil. Electronic address: brunamr@ufcspa.edu.br., Pires Dorneles G; Laboratory of Cellular and Molecular Immunology, Graduate Program in Health Science, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil., Böek Carvalho R; Laboratory of Atmospheric Pollution, Graduate Program in Health Science, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil., Peres A; Laboratory of Cellular and Molecular Immunology, Graduate Program in Health Science, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil., Roosevelt Torres Romão P; Laboratory of Cellular and Molecular Immunology, Graduate Program in Health Science, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil., Barcos Nunes R; Research Department - Instituto Federal de Educação, Ciência e Tecnologia Sul-rio-grandense, Gravataí, Brazil., Ramos Rhoden C; Laboratory of Atmospheric Pollution, Graduate Program in Health Science, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2021 Mar; Vol. 194, pp. 110528. Date of Electronic Publication: 2020 Nov 25.
DOI: 10.1016/j.envres.2020.110528
Abstrakt: 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.
(Copyright © 2020 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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