Effects of preoperative inspiratory muscle training in obese women undergoing open bariatric surgery: respiratory muscle strength, lung volumes, and diaphragmatic excursion.
OBJECTIVE
To determine whether preoperative inspiratory muscle training is able to attenuate the impact of surgical trauma on the respiratory muscle strength, in the lung volumes, and diaphragmatic excursion in obese women undergoing open bariatric surgery.


METHODS
Randomized controlled trial.


METHODS
Meridional Hospital, Cariacica/ES, Brazil.


METHODS
Thirty-two obese women undergoing elective open bariatric surgery were randomly assigned to receive preoperative inspiratory muscle training (inspiratory muscle training group) or usual care (control group).


METHODS
Respiratory muscle strength (maximal static respiratory pressure--maximal inspiratory pressure and maximal expiratory pressure), lung volumes, and diaphragmatic excursion.


RESULTS
After training, there was a significant increase only in the maximal inspiratory pressure in the inspiratory muscle training group. The maximal expiratory pressure, the lung volumes and the diaphragmatic excursion did not show any significant change with training. In the postoperative period there was a significant decrease in maximal inspiratory pressure in both the groups. However, there was a decrease of 28% in the inspiratory muscle training group, whereas it was 47% in the control group. The decrease in maximal expiratory pressure and in lung volumes in the postoperative period was similar between the groups. There was a significant reduction in the measures of diaphragmatic excursion in both the groups.


CONCLUSIONS
The preoperative inspiratory muscle training increased the inspiratory muscle strength (maximal inspiratory pressure) and attenuated the negative postoperative effects of open bariatric surgery in obese women for this variable, though not influencing the lung volumes and the diaphragmatic excursion.
Federal University of São Carlos, São Carlos, SP, Brazil. marcelacbarbalho@hotmail.com
Marcela Cangussu
MC
Barbalho-Moulim
Gustavo Peixoto Soares
GP
Miguel
Eli Maria Pazzianotto
EM
Forti
Flavio do Amaral
Fdo A
Campos
Dirceu
D
Costa
D000328:Adult; D050110:Bariatric Surgery / Q000009:adverse effects*; D001945:Breathing Exercises; D003964:Diaphragm / Q000502:physiology; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008176:Lung Volume Measurements; D008875:Middle Aged; D053580:Muscle Strength / Q000502:physiology*; D009765:Obesity / Q000601:surgery; D011300:Preoperative Care / Q000379:methods*; D012132:Respiratory Muscles / Q000502:physiology*; D013147:Spirometry; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult