Supervised Physical Activity Interventions in Children and Adolescents with Cancer Undergoing Treatment-A Systematic Review.

Background: A cancer diagnosis and its treatment often disrupt a child's and adolescent's normal level of physical activity, which plays a vital role in their development and health. They are therefore often less physically active during treatment than before the diagnosis or compared to healthy peers. Today, there is no comprehensive overview of the safety, feasibility, clinical effectiveness, and potentially long-lasting impact of physical activity (PA) interventions in this population. Methods: We conducted a systematic review in PubMed according to PRISMA guidelines to evaluate studies on PA interventions during cancer treatment in children and adolescents up to 25 years of age. We used the Joanna Briggs Institute's critical appraisal tools to assess the risk of bias. Due to the heterogeneity in interventions and outcomes, we used descriptive approaches only to present the results. Results: Half of the 21 included studies were randomized controlled trials (10/21). PA interventions were found to be safe and feasible when tailored to the patient's age, treatment phase, and clinical condition. Most studies reported improvements in physical fitness, strength, and quality of life, with some reductions in fatigue. Variability in interventions and outcomes, along with small sample sizes and heterogeneous patient populations, made it difficult to draw clear conclusions. Conclusions: PA appears to be a feasible and, in terms of injuries, safe adjunct to cancer treatment in children and adolescents. Despite promising trends, further large-scale, multicenter trials with standardized protocols are needed to better establish the long-term benefits and optimal interventions.