Background e objective:
Colorectal cancer (CRC), which occupies the second position in percentage terms among the types of cancer in Brazil, has been considered one of the clearest markers of epidemiological and nutritional transitions, and associated with an unhealthy lifestyle, among them physical inactivity. The aim of this study was to describe the physical activity of patients with CRC, according to sociodemographic factors, in Mato Grosso, Brazil, from 2019 to 2021.

Methods:
This is a descriptive study. The study population comprised patients assisted at the Hospital de Câncer and Hospital Universitário Júlio Muller, in the state of Mato Grosso, aged 18 years or older and with a cytopathological or histopathological diagnosis of CRC. Sociodemographic and physical activity information was collected through a questionnaire, in a face-to-face interview, from November 2019 to April 2021.

Results:
105 patients diagnosed with CRC were identified, with a mean age of 55.4 years and 50.5% female. Most reported not having practiced physical activity or sport in the last 3 months (71.6%) and not doing physical activity that involves walking or cycling in their usual activities (52.6%). Among the patients who reported not having practiced physical activity or sports in the last 3 months, most were brown (47.0%), married or in a stable relationship (69.1%), with incomplete elementary schooling (48 .5%) and economic class C (50.0%). Among the patients who reported having practiced physical activity or sports in the last 3 months (N=27), all practiced at least once a week, with a minimum duration of 50 minutes (N=17).

Conclusion:
High physical inactivity was identified among patients diagnosed with CRC, especially among brown, married or in a stable union, low level of education and lower purchasing power.