Patients with COPD who presented to the chest diseases polyclinic and whose symptoms of cough, sputum and/or dyspnoea accompanied by tachypnoea and/or tachycardia had not worsened in the last 14 days were defined as 'Stable COPD group' [](streamdown:incomplete-link)

The control group was defined as those who did not have any systemic disease and who were normal at the end of the polyclinic examination who applied to the chest diseases polyclinic.

Peak expiratory flow (PEF) were measured was evaluated with spirometry. It will be recorded as liters and expected percentage

Patients simply indicate on the scale the level of activity that causes dyspnoea in them according to the activities between 0-4.

This statement describes a scale consisting of eight items, each with response values ranging from 0 to 5. The total score is calculated by summing the responses to all the items, resulting in a range from 0 to 40. A higher total score indicates a greater negative impact of the disease on the individual's quality of life and daily activities.

The viscoelastic properties of the muscles (muscle tone (Hz), and elasticity (Relative), stiffness (N/m)) were measured using a hand-held myotonometer.

In pulmonary function test was evaluated with spirometry. forced expiratory volume in the first second (FEV1);will be recorded as liters and expected percentage

In pulmonary function test was evaluated with spirometry. forced expiratory volume in the first second (FEV1);will be recorded as liters and expected percentage