FeelFit: High-intensity Interval Training to Improve Self-reported Physical Fitness in Brain Tumor Patients

Inclusion Criteria:

• reduced self-reported physical fitness;

• minimum age of 18 years;

• diagnosed with a primary brain tumor;

• stable disease, i.e. no signs of radiological or clinical tumor progression;

• no oncological treatment for at least two months prior to inclusion;

• able to speak, read and write in Dutch.

Exclusion Criteria:

• Karnofsky Performance Score < 70;

• already participated in a HIIT program < 1 month prior;

• contraindication of exercise.