The purpose of this study is to assess the effect of post-operative inspiratory muscle training on muscle strength and endurance in patients with obesity submitted to gastroplasty.
Gastroplasties, like other major abdominal surgeries, induce mechanical changes in the lungs and decreases of the respiratory muscle strength in the post-operative periods. Depending on the occurrence of pre-existing disturbs, obese patients may exhibit severe declines of respiratory function after these surgeries. Post-operative respiratory physiotherapy is a valuable intervention, involving a set of techniques aimed to expand pulmonary volumes and to improve arterial oxygenation, leading to decreases on the development of atelectasis and pneumonias. It induces faster recovery of respiratory function and reduction of lung complications, what may be particularly important in high-risk patients like over-weighted subjects. There are scanty data about the role of respiratory muscle training in the post-operative period. This is particularly true regarding inspiratory muscle training of obese patients submitted to gastroplasties.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
30
This daily respiratory exercise was performed from the 2nd day following surgery by using a linear pressure resistance device (Threshold ® IMT - Health Scan Products; USA)was initially set at 40% of the maximal inspiratory pressure, obtained in the 2nd post-operative day, being adjusted to every new maximal inspiratory pressure measurement.
In placebo muscular training the daily respiratory exercise was performed from the 2nd day following surgery by using a linear pressure resistance device (Threshold ® IMT - Health Scan Products; USA)no load until the 30th post-operative day.
Faculty of Medicine of Ribeirão Preto, University of Sao Paulo
Ribeirão Preto, São Paulo, Brazil
Maximum static respiratory pressures
This measurement was made at mouth level by using a properly calibrated manovacuometer (GERAR ®, São Paulo, Brazil), with graduation ranging from 0 to ± 300 cmH2O, connected to a rigid plastic tube.
Time frame: post-operative days 2, 7, 14, and 30
Inspiratory muscular endurance test
This measurement was performed by using the Threshold® IMT device (Health Scan Products, USA), at 80% maximal inspiratory pressure, in sitting position.
Time frame: post-operative days 2, 7, 14, and 30.
Spirometric measurements
Spirometry was performed according to norms of the American Thoracic Society (ATS) (1994)19 by using a previously calibrated spirometer (Respiradyne II Plus®, Sherwood Medical, St. Louis, USA).
Time frame: post-operative days 2, 7, 14, and 30.
Maximum static respiratory pressures
Time frame: post-operative days 2, 7, 14, and 30
Inspiratory muscular endurance test
Time frame: post-operative days 2, 7, 14, and 30
Spirometric measurements
Time frame: post-operative days 2, 7, 14, and 30.
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