Effects of Training Using Volume and Flow-oriented Incentive Spirometry in Healthy Subjects - Case-control Study

Study Overview
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Brief Summary
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Experimental Procedure: The subjects underwent an initial interview in which was filled in a form of anamnesis, in addition to being assessed and reassessed by spirometry, dynamic circumference and manometer. Moreover, responded international physical activity questionnaire (IPAQ - short version) in order to characterize the physical activity level of each participant being classified as inactive, irregularly active, active, and very active. The same examiner performed the assessments and reassessments of individuals after a training program.

Detailed Description
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Spirometry: It was performed by a portable spirometer Easy One® , according to the guidelines of the American Thoracic Society / European Respiratory Society (ATS / ERS). The values obtained were compared with the values predicted by Knudson et al.. Cirtometry Dynamics: provided information on the degree of thoracoabdominal mobility and was performed with the use of a tape measure , which was used to measure the chest circumference during maximal inspiratory and expiratory phase . Measurements were taken horizontally at three different levels: axillary, xiphoid and abdominal, taking as references the axillary fold bottom edge of the xiphoid and umbilicus, respectively. Three measurements on each level were performed. The maximum values of inspiration and expiration were obtained, being considered for analysis, the highest value of the three measurements and subsequently the Index of Amplitude (IA) proposed by Jamami et al. was calculated in order to mitigate the different dimensions of the chest and abdomen. Respiratory muscle strength : They were taken with the subject in a sitting position using a digital manometer (MVD300 - Globalmed®) calibrated, nose clip, with the nozzle held firmly between his lips. The maximal inspiratory pressure (MIP) was obtained by a maximal inspiration preceded by a maximal expiration next to the residual volume (RV) , and to measure maximal expiratory pressure (MEP) a maximal inspiration was next performed to capacity total lung (CPT) followed by a maximal expiration. The evaluation was considered complete when the individual performed three acceptable measures and, among these, a minimum of two reproducible . The last value found could not be superior to the others. Maneuvers with the support pressure by three seconds, and reproducible measurements with a variation less than or equal to 10% of the highest value were considered acceptable. For analysis was considered the greatest pressure value achieved. MIP and MEP obtained the values predicted by the equations of Neder et al. were compared.

Official Title
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Effects of Training Using Volume and Flow-oriented Incentive Spirometry in Healthy Subjects - Case-control Study

Conditions
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Healthy

Intervention / Treatment
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* Other: Voldyne group (VG)
* Other: Cliniflo group (CG)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age between 18 and 30 years Spirometric values within normal limits Body mass index (BMI) between 18 and 29.9 (kg/m2) Without previous or current history of smoking Did not report the presence of neuromuscular, respiratory or cardiac disease Exclusion Criteria: Inability to understand and / or perform procedures Physically active and very active individuals

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Cliniflo group (CG)<br>Training using flow-oriented incentive spirometry Cliniflo | Other: Cliniflo group (CG)<br>* CG: slow deep breaths through the mouthpiece of the incentive Cliniflo® from tidal volume (TV) were performed until the total lung capacity (TLC), holding the maximum inspiration. The volume flow of 100 ml / s for Cliniflo® was standardized, being envisaged to keep the yellow indicator behind the happy face for all individuals.The training lasted approximately 50 minutes, were held twice a week on alternate days, for five consecutive weeks, totaling 10 sessions. Performed three sets of 15 repetitions.<br>|
| Experimental: Voldyne group (VG)<br>Training using volume-oriented incentive spirometry Voldyne | Other: Voldyne group (VG)<br>* VG: slow deep breaths through the mouthpiece of the incentive Voldyne5000® were conducted from the tidal volume (TV) until the total lung capacity (TLC), holding the maximum inspiration. All individuals should maintain yellow cup (yellow flow cup) at a range of flow Best in as long as possible. The training lasted approximately 50 minutes, were held twice a week on alternate days, for five consecutive weeks, totaling 10 sessions. Performed three sets of 15 repetitions.<br>|
| No Intervention: Control group (CONG)<br>No intervention. Assessment and reassessment after 5 weeks. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pulmonary Function Testing (Spirometry) | vital capacity (VC) (%predicted) peak expiratory flow (PEF) (%predicted) forced vital capacity (FVC) (%predicted) forced expiratory volume in one second (FEV1) (%predicted) forced expiratory volume in one second/forced vital capacity ratio (FEV1/FVC) maximum voluntary ventilation (MVV) (%predicted) | up to 5 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Respiratory muscle strength (Maximal inspiratory and expiratory pressures-manometer) | maximal inspiratory pressure (MIP) (cmH2O) maximal expiratory pressure (MEP) (cmH2O) | Baseline and 5 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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incentive spirometry, flow-oriented spirometer, volume-oriented spirometer, physical therapy, respiratory muscle training