In chronically ill patients, is aerobic more effective than anaerobic exercise in improving mood state within 15 minutes after?  

In chronically ill patients, is aerobic more effective than anaerobic exercise in improving mood state within 15 minutes after?  

PICOT question: In chronically ill patients, is aerobic more effective than anaerobic exercise in improving mood state within 15 minutes after?

What mid range theory can I apply to the above-mentioned research question?