Application Breathing Exercises With Load Inspiratory Postoperative Abdominal Surgery


Universidade Metodista de Piracicaba




Pulmonary Atelectasis
Respiratory Tract Diseases
Pathological Conditions, Signs and Symptoms


Procedure: incentive spirometry
Procedure: inspiratory load equipment

Study type


Funder types



UnimepCarol2013 (Registry Identifier)

Details and patient eligibility


The aim of this study is to evaluate the effects of the use of breathing exercises with inspiratory loading on respiratory muscle strength and endurance, lung volumes and capacities and thoracoabdominal mobility in patients after bariatric surgery. It is believed that the use of inspiratory load may mitigate the negative effects of surgical trauma on respiratory muscle dysfunction, preserving respiratory muscle strength, lung volumes and diaphragm mobility, thus reducing the risk of pulmonary complications in the postoperative period.

Full description

This is a prospective, randomized and blinded study, where volunteers will be selected anthropometric measurements, assessment of lung volumes and capacities, through spirometry, thoracoabdominal mobility through the circumference, assessment of inspiratory muscle strength and endurance. After these evaluations will be done by lottery randomization, where the volunteers will be divided into five groups. They are: control, incentive spirometry to flow, the volume incentive spirometry, Threshold ™, Power breathe ®, according to their resources to be performed during the postoperative period. Each appeal will be held in 6 sets of 15 repetitions, totaling seven sessions, two in the immediate postoperative period, and five on the first postoperative day. At the end of the intervention volunteers will be reassessed.


114 patients




25 to 55 years old


Accepts Healthy Volunteers

Inclusion criteria

  • BMI between 40 and 55 Kg/m²
  • Aged between 25 and 55 years
  • Submitted to Roux-en-Y type gastric by-pass by laparotomy
  • Normal preoperative pulmonary function test

Exclusion criteria

  • Hemodynamic instability
  • Hospital stay longer than three days
  • Presence of postoperative complications
  • Smoking

Trial design

Primary purpose




Interventional model

Factorial Assignment


Double Blind

114 participants in 5 patient groups

No Intervention group
Individuals will be treated with conventional physiotherapy according to the routine service of physiotherapy of the hospital.
Incentive spirometry to flow
Experimental group
Was determined for this study that the flow of inspired air will be sufficient to raise up to three spheres. In addition to direct them to do explosive, fast and deep, lifting the ball explosively breaths. Every fifteen inspirations volunteers will be invited to rest for intervals of 30-60 seconds and repeat six times. The use of incentive spirometry was adapted from the recommendations of the American Association for Respiratory Care (1991).
Procedure: incentive spirometry
incentive spirometry to volume
Experimental group
Use of this incentive spirometry will be done as follows: the participants will be instructed to inhale deeply through the mouthpiece, to total lung capacity, starting from functional residual capacity. Will be performed 6 sets of 15 breaths each (deep, slow and sustained) intervals with 30-60 seconds between each series.
Procedure: incentive spirometry
inspiratory load equipment-Threshold
Experimental group
This group will use the device Threshold™. Where adjustment is considered 40% of PNSN achieved by the patient evaluation. The volunteer will be instructed to remain in a supine position with 45 ° fowler comfortably with arms and shoulders relaxed and perform an inspiration with enough force to overcome the linear load of the device, then make a normal expiration. This study was determined to carry six sets of 15 repetitions. The rest will be about one to two minutes in each intervention.
Procedure: inspiratory load equipment
inspiratory load equipment-Power breathe
Experimental group
To exercise inspiratory muscle in this group will be used device Power breathe ® K2 have the same resistance setting, allowing us to tailor your level of inspiratory muscles. Such adjustment will be made considering 40% of PNSN achieved by the patient in the assessment sniff. For its implementation, the patient will be lying with a tilt of the head of the litter at 45 °, the patient will be asked to inspire to overcome the resistance of the linear unit and after performing a normal expiration. This group will also be achieved 6 series with 15 repetitions each, with an interval of one to two minutes between sets.
Procedure: inspiratory load equipment

Trial contacts and locations



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