Comerlato, TatianaPaula, Letícia de2025-01-142021https://repositorio.uricer.edu.br/handle/35974/732Cigarette smoking, known to be a public health problem that causes many deaths annually throughout the world, generates harm to various body tissues, among them, the musculoskeletal tissue, which is the majority of the body composition; these can present themselves especially by means of orthopedic lesions, decreased muscle mass, fatigue, among others. As a way to mitigate the complications caused by smoking and burning its smoke, there is physical exercise, more specifically in the form of resistance training, which is able to neutralize the reactive oxygen species, improve body composition, muscle performance, metabolic and hemodynamic processes, and also generate an increase in fiber size. In view of the adversities imposed by cigarette smoking on muscle tissue and the possible benefits of resistance training, the objective of this study was to analyze the effects of chronic exposure to industrial straw cigarette smoke on the quadriceps muscle, considering histological parameters. Statistical analysis was done using the Kruskal Wallis test followed by Dunn's multiple comparisons test and by mean and standard deviation, considering a significance level of less than 0.05. The results indicated significant differences between groups related to the changes perceived in the histological slides, however, for cell morphometry, there were no statistically significant results. Thus, the experimental groups exposed to cigarette smoke had their muscle fibers damaged. On the other hand, the groups exposed to cigarette smoke and training had an attenuation of such damage.pt-BRFisioterapiaFumaça de cigarroMúsculo quadrícepsTrabalho de Conclusão de Curso