BackgroundPhysical activity (PA) is a non-pharmacological approach to alleviate symptom burden and improve health-related quality of life (HrQoL) in cancer patients (pts). Whether pts with myeloproliferative neoplasms (MPN) PA behavior changes due to symptom burden and/or knowledge of the putative beneficial effects of PA has not yet been investigated.MethodsWe performed a large questionnaire study in MPN pts. Self-reported PA behavior and potential influencing factors of 634 MPN pts were analyzed. Questionnaires were used to assess demographics, anxiety, severity of symptoms, HrQoL, current level of everyday and sports activities, and the level of information regarding the importance/possibilities of PA. According to their PA, the pts were assigned to the three groups: “inactive”, “non-targeted active”, and “sporty active” and compared with each other.ResultsKey findings are that in 73% of the pts, the disease had an impact on PA, with 30% of pts reducing their PA. The prevalence of anxieties (e.g., occurrence of thrombosis and bleeding) regarding PA was 45%. Sporty active pts had a lower symptom burden and better HrQoL (p ≤ 0.001) compared to the other groups. Inactive pts were significantly older and had a higher body mass index than sporty active pts. Inactive and non-targeted active pts felt less informed about the importance/possibilities of PA (p = 0.002).ConclusionOur results suggest that especially older and non-sporty MPN pts could benefit from motivational as well as disease-specific PA information. This study was registered at the German Registry of Clinical Trials, DRKS00023698.

Objective: This study retrospectively examined the association between cancer-related fatigue (CrF) and the number of falls during the last 12 months in patients with myeloproliferative neoplasms (MPNs). Methods: A multicenter, 1-time anonymous survey was conducted using analog and digital questionnaires. Sex-stratified multinomial logistic regression analysis was applied to investigate the association between CrF and number of falls. All analyses were adjusted for age, school education, body mass index, MPN subtype, and quality of life. Results: The final sample comprised 688 patients (mean age 57.4 ± 13.8, 62.4% women). The fall rate was 16.2% in women and 12.2% in men ( P = .153). There were no differences between women and men in terms of CrF between individuals with more than 1 fall, whereas women with 1 fall had a higher CrF compared to those without a fall (RRR = 1.019; 95% CI [1.002-1.039]), respectively. Conclusion: CrF increases the risk of falls in women with MPN. Physicians should evaluate and manage CrF symptoms and implement fall prevention strategies for those who are at increased risk. Further research is needed to better understand the effects of CrF on gait performance and associated fall risk.