Can a simple exercise program help those with COPD, sleep apnea, or long COVID?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Ability to walk, sit down and stand up independently * Age 30 - 85 years * Ability to lay in supine or elevated position for up to 3 hours * Diagnosis of moderate to very severe chronic airflow limitation and compliant to the following criteria: FEV1 \< 70% of reference FEV1 -or- Obstructive Sleep Apnea (OSA) -or- 2 weeks post-recovered\* from laboratory confirmed case of COVID ● Willingness and ability to comply with the protocol \*Recovered is defined according to Brazos County Health District as someone who has been fever-free for 24 hours without fever-reducing medications, and it has been 10 days after onset of symptoms. Inclusion criteria control subjects * Healthy male or female according to the investigator's or appointed staff's judgment * Ability to walk, sit down and stand up independently * Age 30 - 85 years * Ability to lay in supine or elevated position for up to 3 hours * No diagnosis of chronic lung disease * Willingness and ability to comply with the protocol Exclusion Criteria: * Unable to exercise due to physical limitations (i.e. neuromuscular and/or orthopedic disorders) * Established diagnosis of malignancy * Presence of acute illness or metabolically unstable chronic illness * Presence of fever within the last 3 days. * Expected to have surgery within 1 month of screening or during exercise training * Any other condition according to the PI or research staff that was found during the screening visit, that would interfere with the study or safety of the patient. * Previous injury that could interfere with participation in resistance exercise protocol. * Failure to give informed consent or Investigator's uncertainty about the willingness or ability of the subject to comply with the protocol requirements. * (Possible) pregnancy. * Already enrolled in another clinical trial and that clinical trial interferes with participating in this study. When during the period from enrollment to the test day any condition causing the subject to not meet inclusion criteria or to meet exclusion criteria, the subject will be excluded from the study.