Method Validation Study to Explore the Sensitivity of SenseWear Armband Gecko for Measuring Physical Activity in Subjects With Chronic Obstructive Pulmonary Disease (COPD) & Asthma

Subjects will wear SenseWear Armband Gecko up to 24 hours per day for 2 days while performing usual activities of daily living, strength exercises, laboratory-based, and field-based exercise tests

Subjects will wear SenseWear Armband MF up to 24 hours per day for 2 days while performing usual activities of daily living, strength exercises, laboratory-based, and field-based exercise tests

Subjects will wear Actigraph GT9x wristband and waistband up to 24 hours per day for 2 days while performing usual activities of daily living, strength exercises, laboratory-based, and field-based exercise tests

Subjects will wear Garmin Vivofit 2 wristband up to 24 hours per day for 2 days while performing usual activities of daily living, strength exercises, laboratory-based, and field-based exercise tests

In a subset of subjects, this device will be worn as a comparator for monitoring sleep quality and duration.

Subjects will perform strength exercises using elastic bands of varying resistance

Subjects will perform an Incremental Shuttle Walk Test (ISWT) and each individual component of a Short Physical Performance Battery (SPPB).

Subjects will perform an incremental, symptom-limited cardiopulmonary exercise test on a cycle ergometer and will walk at various speeds on a treadmill