Energy balance
A 12-month comprehensive lifestyle intervention targeting modest weight loss (7-10%) and increased physical activity does not significantly improve asthma control (ACQ scores) or lung function in obese adults with uncontrolled asthma compared to enhanced usual care.
If you are obese and have uncontrolled asthma, a standard 12-month lifestyle program focusing on modest weight loss (around 4-5%) and moderate exercise is unlikely to significantly improve your asthma symptoms or lung function. While this is excellent for your heart and metabolic health, you should not expect immediate relief from asthma. You may need to aim for a larger weight loss (10% or more) or discuss other asthma management options with your doctor, as modest changes may not be enough to impact airway mechanics or inflammation in this specific population.
The modest average weight and activity improvements are comparable to those shown to reduce cardiometabolic risk factors in studies of similar interventions in other populations but are not associated with significant net benefits for asthma control or other clinical asthma outcomes in the current population.
Why this rating
Large sample size (n=330), rigorous RCT design, long duration (12 months), and diverse population.
Source
Behavioral Weight Loss and Physical Activity Intervention in Obese Adults with Asthma. A Randomized Trial
Jun Ma et al. · Annals of the American Thoracic Society · 2014
DOI 10.1513/annalsats.201406-271oc
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