Conventional Oxygen Therapy is a treatment that provides extra oxygen to people who have trouble getting enough oxygen on their own. In this trial, it is delivered through a nasal cannula, which is a small, flexible tube that sits under the nose. This therapy helps improve oxygen levels in the blood, making it easier for patients to breathe, especially during physical activities.

High-Flow Oxygen Therapy is a more advanced way of delivering oxygen to patients. It uses a special machine to provide a higher flow of oxygen than conventional methods. This therapy can deliver warm and humidified oxygen, which can be more comfortable for patients. In this trial, it is used to see if it can better maintain oxygen levels during exercise for patients with lung disease.

Interstitial Lung Disease (ILD) – Interstitial Lung Disease refers to a group of disorders that cause progressive scarring of lung tissue. This scarring affects the interstitium, which is the tissue and space around the air sacs of the lungs. As the disease progresses, the lung tissue becomes thickened and stiff, leading to difficulty in breathing and reduced oxygen transfer to the bloodstream. Over time, the scarring can worsen, making it increasingly difficult for the lungs to function properly. The progression of ILD can vary significantly among individuals, with some experiencing rapid deterioration and others having a slower course. The exact cause of the scarring can be difficult to determine, and it may result from long-term exposure to hazardous materials, certain medications, or autoimmune diseases.