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Effects of Obesity on Pulmonary Functions in Children

Journal of the Korean Pediatric Society 2002;45(5):588-595.
Published online May 15, 2002.
Effects of Obesity on Pulmonary Functions in Children
Seok Won Park1, Hwang Min Kim1, Jong Soo Kim1, Jae Kuk Cha2, Hae Ran Lee2
1Department of Pediatrics, Wonju College of Medicine, Yonsei University, Wonju, Korea
2Department of Pediatrics, College of Medicine, Hallym University, Seoul, Korea
소아에서 비만이 운동 전후의 폐활량에 미치는 영향
박석원1, 김황민1, 김종수1, 차재국2, 이혜란2
1연세대학교 원주의과대학 소아과학교실
2한림대학교 의과대학 소아과학교실
Correspondence: 
Seok Won Park, Email: pdy1013@wonju.yonsei.ac.kr
Abstract
Purpose
: The incidence of obesity has increased in Korea recently. Obesity leads to higher risks of hypertension, hyperlipidemia and insulin resistance. It also leads to risks of respiratory complications. This study was performed to see the effects of obesity on children's pulmonary functions and on developed bronchospasm after exercise loading according to their obesity degrees.
Methods
: 257 obese children and 150 non-obese children were enrolled. Obese children were divided into 3 groups by the obesity degrees. Pre- and post-exercise loading FEV1(forced expiratory volume at one second), FVC(forced vital capacity) and PEFR(peak expiratory flow rate) were checked in all subjects. The percent predicted values of each parameter was compared according to obesity degrees and the differences between pre-exercise and post-exercise values.
Results
: The percent predicted value of FEV1, FVC decreased only in the severe obesity group compared with those in the control group. However percent predicted PEFR declined according to obesity degrees. The percent predicted value of FEV1, FVC and PEFR after exercise loading were much lower than those before exercise loading in all groups.
Conclusion
: As the degree of obesity was higher, the percent predicted value of pulmonary function was lower. And after exercise loading, as the degree of obesity was higher, the reduction of percent predicted value of pulmonary function was larger. Therefore the pulmonary function in obese children must be observed carefully. Further studies on the effects of pulmonary functions in obese children are necessary.
Key Words: Obesity, Exercise, Pulmonary function


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