Body Mass Index (BMI) is one of the important factors for each human being to keep oneself healthy.
Assessment of BMI made easy to investigate the amount of adiposity. Many health consequences were
associated with underweight and overweight. Lung function tends to decrease in underweight and
obesity. Totally 60 males and 60 females were included in this study of age group between 18-25 years.
The participants were selected based on inclusion and exclusion criteria. Only healthy individuals were
recruited in this study and subjects with respiratory illness or history of any co-existing morbidities
were excluded from this study. This study was approved by Institutional ethical committee. Lung
function was assessed by recording PEFR using Wrights peak flow meter and Breath Holding Time
(BHT) was recorded using stop watch. Data’s was analysed using SPSS software. As a result PEFR and
BHT were significantly reduced in underweight and obese (P<0.01). On comparison between males
and females, PEFR and BHT were reduced drastically in females than males (P<0.05).