The respiratory system is divided into upper and lower tracts and functions through gaseous exchange, ventilation, and perfusion, with normal breathing depending on lung compliance, airway resistance, and muscular strength. Pulmonary function is assessed using spirometry, particularly Forced Vital Capacity (FVC) and Forced Expiratory Volume in 1 second (FEV₁), which are often reduced in obese children due to excess adipose tissue restricting chest wall expansion and diaphragmatic movement, contributing to dyspnea. This randomized controlled trial will be conducted over 10 months in Lahore at selected hospitals and schools, involving 38 obese children (BMI ≥30), aged 6-12 years with mild to moderate dyspnea (RPE 8-14), who will be randomly assigned to either an experimental group receiving blowing balloon therapy or a control group performing splint running (n=19 each). Participants will be screened using the Borg RPE Scale, and data will be analyzed using SPSS version 20.
Obese children having 30 or greater than 30 BMI
Age: 6 to 12 years .
Children with atleast light to moderate intensity dyspnea (RPE 8-14)
Recent asthma exacerbation or respiratory infection in the past 4 weeks.
Other chronic respiratory (e.g. cystic fibrosis) or cardiac diseases.
Musculoskeletal, neurological, or other conditions that contraindicate exercise.
Non-ambulatory status or inability to perform the exercise protocol
Parallel
Blowing Balloon Therapy Group
Other interventionBlowing balloon therapy involves the child inhaling deeply through the nose and exhaling slowly into a balloon, repeated for several sets under supervision. This technique strengthens respiratory muscles, improves lung expansion, and enhances breathing control. Sessions are performed regularly with rest intervals to avoid fatigue and ensure safety.
Pulmonary Function
The primary outcome of this study is pulmonary function, specifically measured by Forced Vital Capacity (FVC) and Forced Expiratory Volume in 1 second (FEV₁) using spirometry. These measurements will be taken at baseline (pre-intervention) and after completion of the intervention (post-intervention) to assess changes in lung function. Any improvement in FVC and FEV₁ values will reflect enhanced respiratory capacity and indicate the effectiveness of the intervention in obese children with dyspnea.
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