Systems and methods for preserving and/or enhancing respiratory function

A method comprising:

• selecting at least six sites on a body of a patient for delivery of a photoceutical to at least one primary inspiratory muscle and/or a lung of the patient by a photoceutical medical device, wherein at least one site is on an abdomen of the patient and at least one site is on a neck of the patient,
• wherein the photoceutical comprises light of at least one wavelength;
• and
• applying the photoceutical at the at least one site on the body of the patient by the photoceutical medical device for a time period from a first start time to a first end time to treat the at least one primary inspiratory muscle and/or the lung of the patient to preserve and/or enhance a respiratory function of the patient wherein the applying further comprises placing the photoceutical medical device at the at least one site on the abdomen of the patient at an edge of the costal cartilage of the patient while avoiding the xiphoid process of the patient.