Abstract
BackgroundThere is increasing evidence that obesity is related to asthma development and severity. However, it is largely unknown whether weight reduction can influence asthma management, especially in children.ObjectiveTo determine the effects of a multifactorial weight reduction intervention on asthma management in overweight/obese children with (a high risk of developing) asthma.MethodsAn 18-month weight-reduction randomized controlled trial was conducted in 87 children with overweight/obesity and asthma. Every six months, measurements of anthropometry, lung function, lifestyle parameters and inflammatory markers were assessed. Analyses were performed with linear mixed models for longitudinal analyses.ResultsAfter 18 months, the body mass index-standard deviation score decreased by -0.14±0.29 points (p<0.01) in the intervention group and -0.12±0.34 points (p<0.01) in the control group. This change over time did not differ between groups (p>0.05). Asthma features (including asthma control and asthma-related quality of life) and lung function indices (static and dynamic) improved significantly over time in both groups. The FVC% predicted improved over time by 10.1 ± 8.7% in the intervention group (p<0.001), which was significantly greater than the 6.1 ± 8.4% in the control group (p<0.05).Conclusions & clinical relevanceClinically relevant improvements in body weight, lung function and asthma features were found in both the intervention and control group, although some effects were more pronounced in the intervention group (FVC, asthma control, and quality of life). This implies that a weight reduction intervention could be clinically beneficial for children with asthma.Trial RegistrationClinicalTrials.gov NCT00998413
Highlights
The high childhood obesity prevalence is a major public health problem [1]
After 18 months, the body mass index-standard deviation score decreased by -0.14±0.29 points (p
Relevant improvements in body weight, lung function and asthma features were found in both the intervention and control group, some effects were more pronounced in the intervention group (FVC, asthma control, and quality of life)
Summary
A high body mass index (BMI) increases the risk of developing asthma. A dose-response effect of BMI on asthma symptoms has been detected [3]. In comparison to their lean counterparts, the obese-asthmatic population is characterised by decreased asthma control, high medication use, and frequent asthma-related hospital admissions [4,5,6]. As obese children often become obese adults, it is necessary to tackle obesity early in life [7]. There is increasing evidence that obesity is related to asthma development and severity. It is largely unknown whether weight reduction can influence asthma management, especially in children
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