EFFECTIVENESS OF COMBINED CONCENTRIC AND ECCENTRIC AEROBIC EXERCISE ON A TREADMILL IN PATIENTS WITH COPD: A RANDOMIZED CLINICAL TRIAL.

It is a safe and simple test that provides a reliable and objective measure of functional capacity in patients with lung disease, allowing for a rapid interpretation of the patient's progress. It is therefore the primary variable of this study. In this test, the patient is asked to stand up from and sit down from a chair at maximum speed five times, and the time is recorded. The protocol described by Jones et al. will be followed, with a minimum reduction of 1.7 seconds considered significant improvement.

The pressure gauge we use is the RP Check. To measure peak expiratory pressure (PEM), the patient places the mouthpiece in their mouth, with the bite blocks between their teeth; they inhale as much air as possible until their lungs are completely full (to total lung capacity) and then exhale with maximum effort and for as long as possible (at least 1.5 seconds). To measure peak inspiratory pressure (PIP), the patient places the mouthpiece in their mouth, exhales as much air as possible to empty their lungs to residual volume, and then inhales with maximum effort and for as long as possible (at least 1.5 seconds). We take three consecutive measurements of each pressure, allowing the patient to rest for one minute between each measurement, and record the best result.

Hand Grip Dynamometer Jamar®, taking into account the dominant hand and possible upper limb injuries that may interfere with the test result

The measurement will be taken on the dominant leg using the MicroFET®2 Digital Handheld Dynamometer following the protocol described by Bohannon et al (

It consists of a vertical scale from 0-10 that relates the perceived exertion of physical activity to a numerical value ranging from 0 (minimal effort) to 10 (extreme effort). It does not require measuring instruments, as it is a subjective scale.