Current research on the effects of physical exercise in patients with CLL is limited. While some studies suggest that cancer patients may benefit from physical exercise, most research has focused on other types of cancer, such as breast, lung, or colorectal cancer. In the case of patients with CLL, in addition to functional and psychological issues, they often experience chronic inflammation and alterations in lipid profiles, which can increase the risk of cardiovascular comorbidities.
Inflammatory markers, such as C-reactive protein (CRP) and pro-inflammatory cytokines (IL-6, TNF-α), are common in patients with CLL, and it has been suggested that modulating these markers through exercise may help control systemic inflammation. Strength training, in particular, could be beneficial for improving the inflammatory and lipid profiles in these patients, although this has not been thoroughly evaluated in this population.
Regarding mental health, studies have reported that patients with CLL experience high levels of anxiety and depression, which significantly deteriorate their quality of life. In other oncology populations, exercise has proven effective in reducing these symptoms and improving overall well-being. However, it has not been sufficiently studied whether these effects can be replicated in patients with CLL, representing a gap in the current literature.
Finally, the loss of muscle strength, a key indicator in the diagnosis of sarcopenia according to the diagnostic algorithm proposed by the European Working Group on Sarcopenia in Older People in 2019 (EWGSOP2), should be considered another common issue in patients with CLL, due to both the average age of the patients (70 years) and the disease itself or the side effects of treatment. Although it has been shown that physical exercise in general, and strength exercise in particular, can improve muscle strength and functional capacity in older adults and cancer patients, studies evaluating these effects in patients with CLL are lacking. Assessing how a strength training program can influence functional recovery and improve the quality of life of these patients is crucial for their clinical management.