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A Study on How Electrical Stimulation of Abdominal Muscles Affects Breathing and Sensations in Patients with COPD

Basic Information

Recruitment status	Recruiting
Health condition(s) or Problem(s) studied	Chronic obstructive pulmonary disease(COPD)
Date of first enrollment	16/04/2026
Target sample size	20
Countries of recruitment
Study type	Interventional
Intervention(s)	Two interventions will be conducted during rest and ergometer-based exercise therapy: Pursed-lip Breathing + Expiratory-Synchronized Neuromuscular Electrical Stimulation (E-NMES) Group In addition to pursed-lip breathing, NMES will be administered under the following parameters: Frequency: 30 Hz Pulse Width: 250-350 us Intensity: Maximum tolerable level with visible muscle contraction Stimulation Site: Bilateral abdominal oblique muscles Duration: 5 minutes of resting breathing exercise and 5 minutes of exercise therapy On-Off Timing: ON during expiration, OFF during inspiration Control Group Pursed-lip breathing only

Outcome(s)

Primary Outcome	Inspiratory capacity(IC)
Secondary Outcome	Respiratory rate (RR),Tidal volume(TV),Ventilation exposure (VE),Visual analog scale(VAS:chest and lower extremities),SpO2,Pulse rate(RR), Questionnaire on breathing.

Key inclusion & exclusion criteria

Age minimum	>= 50age old
Age maximum	<= 85age old
Gender	Male
Include criteria	1,Confirmed COPD by spirogram. 2,Patients with COPD II, COPD III.
Exclude criteria	1,Patients with a diagnosis of central nervous system disease. 2,Patients with a diagnosis of musculoskeletal system disease. 3,Patients with cardiac disease,pacemakers ICDs and other medical electronic devices 4,Patients unable to follow instructions. 5, Patients deemed unsuitable for this study by the principal investigator or sub-investigator.