Comparison of Spirometric Parameters between Normal Weight and Obese Female Middle School Students

Document Type : Original Article


Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Esfahan University of Esfahan, Esfahan, Iran.


Background and Objective: Obesity is a serious problem threatening public health. It is an important risk factor for many pulmonary diseases, and a significant cause of morbidity and mortality among people. Therefore, it seems that obesity and the percent of body fat are associated with respiratory problems. The present study undertakes to examine spirometric parameters in obese female students at middle school, compared to normal weight.
Subjects and Methods:  Two hundred and eighty three students from middle school students in Isfahan (aged 12.79±0.88, with body mass index of 20±39.9 Kg/m2) were selected in a cluster random way and were categorized, based on the percentile body mass index (CUT OFF, BMI) and age, into three groups of obese (n=50) with a percentile of 95≥BMI, overweight (n=62) with a percentile of 85≥BMI≤95 and optimal weight (n=171) with a percentile of 15≥BMI≤85. Spirometric parameters were measured using spirometric model of J.G. LSD post hoc test was used for analysis of the results
Results: A significant increase (p≤0 /01) in pulmonary function of students with normal weight was observed, while it decreased significantly for obese and overweight students.
Conclusion: Results showed that obesity is particularly influential on pulmonary function and significantly decreases pulmonary capacity and volume. However, its exact mechanism is not well-understood and requires further elaborative studies.


1-Saremi A. Parastesh M. The effect of weight–loss program on lung function and systemic inflammation in obese men. J Lorestan Med Sci Univ 2011;12(2)[In Persian]
2-Agha Ali Nejad H. Normalized WHR. WC. BMI and percent body fat in men 30 to 55 years in Tehran. Motion 2003;20:113-34.[In Persian]
3-Chen Y, Rennie D, Cormier Y, Dosman JA. Waist circumference associated with pulmonary  function in children. Pediatr pulmonol 2009;44(3):216-21.
4-Gundogdu Z, Eryilmaz N. Correlation between peak flow and body mass index in obese and non-obese children in Kocaeli, Turkey. Prim Care Respir J 2011; 20(4):403-6.
5-Spathopoulos D, Paraskakis E, Trypsianis G, Tsalkidis A, Arvanitidou V, Emporiadou M, et al. The effect of obesity on pulmonary lung function of school aged children in Greece. Pediatric Pulmonol 2009;44(3):273-80.
6-Godina E, Khomyakova I, Purundzhan A, Tretyak A, Zadorozhnaya L. Effect of physical training on body composition in Moscow dolescents. J physical Anthropol 2007;26(2):229-34.
7-Ochs-Balcom HM, Grant BJ, Muti P, Sempos CT, Freudenheim JL, Trevisan M, et al. Pulmonary function and abdominal adiposity in the general population. Chest 2006;129(4);853-62.
8-Furutate R, Ishii T, Wakabayashi R, Motegi T, Yamada K, Gemma A, et al. Excessive visceral fat accumulation in advanced chronic obstructive pulmonary disease. Int J Chron Obstruct Pulmon Dis 2011;6:423-30