Exercise for Childhood Cancer Survivors

(PULSE Trial)

This trial explores how different levels of exercise can improve heart health in young adults who survived childhood cancer and received anthracyclines (a type of chemotherapy). The study tests two exercise programs: High-Intensity Interval Training (HIIT), which involves short bursts of intense activity, and Moderate-Intensity Continuous Training (MICT), which consists of a steady, moderate workout. This trial suits adults aged 18-39 who had cancer as a child, have been cancer-free for at least two years, and currently exercise less than an hour a week. As an unphased trial, it offers a unique opportunity to contribute to understanding how exercise can enhance heart health in cancer survivors.

The trial information does not specify whether you need to stop taking your current medications. It's best to discuss this with the trial coordinators or your healthcare provider.

Research has shown that high-intensity interval training (HIIT) is generally safe and well-tolerated by cancer patients, including young survivors. Studies have found that HIIT can boost physical fitness and quality of life without causing major side effects. Early findings also suggest that HIIT is safe for childhood cancer patients without serious health problems.

Evidence also supports the safety and effectiveness of moderate-intensity continuous training (MICT). Research indicates that MICT safely improves heart health in childhood cancer survivors. Both HIIT and MICT have high adherence rates, meaning most participants can continue with the program without issues.

Researchers are excited about this trial because it explores how specific exercise regimens can benefit childhood cancer survivors, an area where traditional treatments often focus on medication and passive recovery. The trial investigates two exercise programs: High-Intensity Interval Training (HIIT) and Moderate Intensity Continuous Training (MICT). Unlike typical care, which might include recommendations for general physical activity, these programs offer structured, home-based exercises that are virtually supervised. This approach not only encourages regular physical activity but also provides tailored guidance, potentially improving survivors' overall health and quality of life. By comparing HIIT and MICT, researchers aim to find out which exercise method might be more effective in enhancing fitness and well-being in this unique population.

This trial will compare two exercise programs for childhood cancer survivors: High-Intensity Interval Training (HIIT) and Moderate-Intensity Continuous Training (MICT). Studies have shown that HIIT can significantly enhance heart and lung fitness in cancer survivors, increasing the body's oxygen use during exercise by 10.68%, a key indicator of improved heart health. MICT also demonstrated positive results, with a 7.4% improvement in the same measure. Participants in this trial will be randomly assigned to one of these safe and effective exercise programs, both of which boost physical health in cancer survivors. While HIIT may be slightly more effective, both exercise types can improve heart health in young adults who survived cancer as children.¹²³⁵⁶