Kirici Berber N, et al. - Researchers determined the impacts of oxygen therapy on energy metabolism and physical activity in patients with COPD, using metabolic Holter device (SenseWear Armband) to capture Holter data in a digitized electronic system. Post-oxygen treatment, patients showed a significant increase in energy expenditure. Long-term oxygen therapy in patients with respiratory failure resulted in increased daily energy expenditure. Furthermore, a decrease in the immobility and increase in the duration of physical activity was noted. Overall, in regards to energy metabolism and physical activity, long-term oxygen therapy offered positive impacts in COPD patients. It was recommended that medication adherence and long-term oxygen therapy should begin early in patients with COPD.