Role of the active cycle of breathing technique combined with phonophoresis for the treatment of patients with chronic obstructive pulmonary disease (COPD): study protocol for a preliminary randomized controlled trial

Table 1 Time points of our research

ACBT active cycle of breathing technique, FEV1% forced expiratory volume in 1 s to the forced vital capacity, SpO₂ arterial oxygen saturation, CAT scale COPD Assessment Test scale, AIR scale Anxiety Inventory for Respiratory Disease scale, t₋₁ enrolment, t₀ baseline, t₁ 1 week, t₂ intervention close-out, t₃ discharged

ISSN: 1745-6215