Comparative efficacy of interferential therapy, bronchodilators, and body positioning on asthma control and quality of life of patients with bronchial asthma: Study protocol

Background: Interferential therapy (IFT) is the application of two medium frequency currents to the skin to stimulate and activate different systems in the body using specific frequencies and frequency ranges. IFT aims to reduce myalgia in the chest and upper back, reduce muscular fatigue and induce mucus expectoration. This study is designed to compare the efficacy of IFT on asthma control and quality of life of asthma patients pre-and post-administration of bronchodilators and determine the most influential body position in its application. Methods: Forty-eight (48) patients aged 18 years and above with bronchial Asthma attending the respiratory clinic at the Lagos State University Teaching Hospital, Ikeja (LASUTH) will be assessed for the study eligibility. The study design will be a double-blinded, randomized control trial with four intervention groups and four parallel placebo control groups. IFT will be administered as an intervention to patients on short and long-acting bronchodilators in an assigned fundamental body position for 20 minutes. Six continuous outcome variables at different points will be utilized as an outcome measure. Baseline Pulmonary Function Test (PFT) will be assessed on entry into the study, Quality of life and asthma control will be evaluated every two (2) weeks of the study. Data obtained will be analyzed using descriptive and inferential statistics of repeated ANOVA; P<0.05. Discussion: The study outcome will compare the efficacy of IFT on Bronchial Asthma, identify its effect in different body positions, and compare the relationship between its application and the bronchodilator medication frequently used by the patients.