This study aims to compare pulmonary function and respiratory muscle strength between children with hearing impairment and their healthy peers. Hearing plays a critical role not only in communication but also in cognitive, sensory, and psychomotor development. Children with hearing impairment may experience balance and coordination problems, vestibular dysfunction, and reduced muscle strength, which may negatively affect respiratory function. Although several studies have evaluated pulmonary function in children with hearing impairment, research investigating respiratory muscle strength in this population is limited. To our knowledge, no peer-reviewed study has directly compared respiratory muscle strength between children with hearing impairment and healthy controls. This study will compare spirometric parameters and respiratory muscle strength measurements between children with hearing impairment and age-matched healthy controls.
Study Type
OBSERVATIONAL
Enrollment
30
Maximum Inspiratory Pressure (MIP)
Respiratory muscle strength assessed by measuring maximum inspiratory pressure (cmH₂O) using a portable electronic mouth pressure device (MicroRPM) according to ATS/ERS guidelines.
Time frame: At baseline (single assessment)
Maximum Expiratory Pressure (MEP)
Forced vital capacity measured by spirometry (COSMED Pony FX) according to ATS/ERS criteria; values expressed as absolute and percentage of predicted values.
Time frame: At baseline (single assessment)
Forced Vital Capacity (FVC)
Forced vital capacity measured by spirometry (COSMED Pony FX) according to ATS/ERS criteria; values expressed as absolute and percentage of predicted values.
Time frame: At baseline (single assessment)
Forced Expiratory Volume in 1 Second (FEV1)
Forced expiratory volume in the first second measured by spirometry; values expressed as absolute and percentage of predicted values.
Time frame: At baseline (single assessment)
FEV1/FVC Ratio
Ratio of FEV1 to FVC obtained from spirometric assessment.
Time frame: At baseline (single assessment)
Peak Expiratory Flow (PEF)
Peak expiratory flow measured by spirometry.
Time frame: At baseline (single assessment)
Forced Expiratory Flow 25-75% (FEF25-75%)
Forced expiratory flow between 25% and 75% of FVC measured by spirometry.
Time frame: At baseline (single assessment)
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