其他摘要：Different studies of patients with colorectal cancer have shown that physical activity has positive physical and psychosocial effects. However, most patients do not comply with the recommended criteria of physical activity. The aim of the present study was to analyze, by means of a systematic review of the literature, the factors associated with physical activity participation in patients with colorectal cancer. For this purpose, we conducted a search in the databases WEB OF SCIENCE, SCOPUS and SPORTDISCUS up to February of 2016. After the selection process, 23 full-text articles were retained. The results allowed identifying four large categories of factors related to physical activity participation in this population: sociodemographic factors, health factors(specific and nonspecific to the disease), prior experience and preferences, and motivational factors. Among the results obtained, comorbidity and the receiptof adjuvant therapy (with its corresponding side effects, such as fatigue and nausea) were related to less physical activity. Variables such as positive attitude, family support, satisfaction of basic psychological needs, and self-determined motivation were shown to be facilitators of physical activity. Taking into account these results, it is necessary to develop programs of physical activity adapted to the particular characteristics of this population and based on motivational strategies that promote adherence to physical activity.
