PT  - JOURNAL ARTICLE
AU  - Cledna Barreto
AU  - Vanessa Resqueti
AU  - Valeska Fernandes de Souza
AU  - Guilherme Augusto de Freitas Fregonezi
AU  - Selma Sousa Bruno
TI  - Influence of the loss of weight after bariatric surgery in the respiratory muscle endurance
DP  - 2011 Sep 01
TA  - European Respiratory Journal
PG  - p1311
VI  - 38
IP  - Suppl 55
4099  - http://erj.ersjournals.com/content/38/Suppl_55/p1311.short
4100  - http://erj.ersjournals.com/content/38/Suppl_55/p1311.full
SO  - Eur Respir J2011 Sep 01; 38
AB  - Background: Weight loss induced by bariatric surgery (BS) in morbidity obese has effects on respiratory function, however the relationship between weight loss and respiratory muscle endurance is unknown.Objective: To study relationship between weight loss and respiratory muscle endurance induced by BS.Methods: We evaluated anthropometric parameters (waist circumference (WC), hip circumference (HC), waist-hip ration (WHR), neck circumference (NC)) and lung function tests (spirometry and respiratory muscle strength and maximal voluntary ventilation) in 39 patients (29 F), mean age 35.9±10.9 years, without respiratory or heart diseases, before and after gastric bypass, Roux en-Y surgery.Results: After 10.8±7.7 months of BS we observed a decreasing in the anthropometrics values (p<0.05) of weight:124.8±17.5 to 88.8±14.28 kg, BMI: 47.9±5.6 to 34.3±4.75 kg/m2 and NC:43.5±3.9 to 37.2±2.7 cm. Significantly improvement lung function was observed in FVC: 3.6±0.9 vs 4.0±1.0 l, FEV1:3±0.7 vs 3.4±0.8 l, FEF25-75%:3.4±0.8 vs 3.8±0.9 l/s, ERV: 0.35±0.4 to 0.66±0.4 l and MVV:103.4±22 vs 137.3±29 l/min, all to p<0.001 compared to pre-operative phase. We found an increase of 0.06 l in the FVC and 5.9 l/min in the MVV after BS for each 1 cm of neck circumference decrease. For each 1kg/m2 lost after the BS FVC increase 0.03 l and MVV 2.74 l/min.Conclusion: The loss of weight induced by BS provides an increase in the lung function and the reduction of fat around the neck appear to be more important to increase lung function than BMI.Financial support: CNPq-Brazil.