An interventional study of Inspiratory muscle training (IMT) and Sham IMT in Hypertension, sponsored by Hospital de Clinicas de Porto Alegre. Status unknown at 1 site in Brazil. Open to participants aged 35 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2015-05-19.
Sponsored by Hospital de Clinicas de Porto Alegre · Not applicable and Interventional
This research aims to evaluate the effects of inspiratory muscle training (IMT) on blood pressure, in inspiratory muscle mechanoreflex, autonomic cardiovascular control in subjects with hypertension.
Patients with hypertension will be selected through the Outpatient Hypertension of the Hospital of Clinics de Porto Alegre, for convenience. Subsequently, patients will be subjected to test respiratory muscle strength (manometer), respiratory muscle resistance, cardiopulmonary exercise testing (maximum), evaluation of cardiac reflex sensitivity and autonomic control test and induction of inspiratory muscle mechanoreflex with occlusion plethysmography at baseline before the start of the training protocol. Patients will randomize inspiratory muscle training for 30 minutes a day, 7 days a week, for 8 weeks with muscle training device (PowerBreathe). There will be a weekly monitoring in the Clinical Research Center of the institution where the maximal inspiratory pressure (MIP) and respiratory training techniques will be reassessed and readjusted (40% of MIP). The control group will be submitted to respiratory training techniques with muscle training device (PowerBreathe) without load. After this period, all initial tests will be reassessed. A healthy control group study with 10 normotensive individuals will be included.
1,092 studies on the registry are indexed under Respiratory Aspiration; 216 are open to participants now.
This study's planned enrollment of 60 is above the median of 42 across 881 interventional studies indexed under Respiratory Aspiration.
Browse Respiratory Aspiration studies →Hospital de Clinicas de Porto Alegre is the lead sponsor of 450 studies on the registry; 61 are open to participants now.
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Participants will be selected from the medical records in search of Basic Health Unit and Hypertension Clinic - Hospital of Clinics of Porto Alegre (HCPA), Porto Alegre - RS:
Inspiratory muscle strength ≥ 70% of predicted.
Exclusion Criteria:
Participants will be submitted to a linear pressure resistance (PowerBreathe) with an inspiratory load of 40% of maximal inspiratory pressure (adjusted weekly), seven days a week, session duration of 30 minutes for 8 weeks.
Other: Inspiratory muscle training (IMT)
Participants will be submitted to inspiratory muscle training with the same equipment as the intervention group, but without a load generating resistance.
Other: Sham IMT
The normotensive control group (healthy) will go through the same initial evaluation without performing inspiratory muscle training.
Participants will receive IMT for 30 min, 7 times per week for 8 weeks using Inspiratory muscle trainer device (PowerBreathe). During training, participants will be instructed to maintain diaphragmatic breathing with a breathing rate of 15-20 cycles/min. Inspiratory load will be set at 40% of maximum static inspiratory pressure, and weekly training loads will be adjusted to maintain 40% of MIP. Each week, six training sessions will be held at home and a training session will be supervised in the research center.
Also known as: Inspiratory muscle training
Participants will receive IMT for 30 min, 7 times per week for 8 weeks using Inspiratory muscle trainer device (PowerBreathe). During training, participants will be instructed to maintain diaphragmatic breathing with a breathing rate of 15-20 cycles/min, but without a load generating resistance. Each week, six training sessions will be held at home and a training session will be supervised in the research center.
Also known as: Sham Inspiratory muscle training
Levels of blood pressure (mmHg)
Ambulatory blood pressure monitoring (ABPM).
Time frame: 8 weeks
Inspiratory muscle mechanoreflex
Venous occlusion plethysmography measure during inspiratory muscle training exercise at 60% and 2% of maximal inspiratory muscle strength.
Time frame: 8 weeks
Cardiopulmonary Capacity
High-intensity exercise test (maximum) assessed by ergometry with noninvasive hemodynamic monitoring (electrocardiogram, exhaled gas analyzer, heart rate, respiratory rate and blood pressure).
Time frame: 8 weeks
Autonomic cardiovascular control
Heart rate and blood pressure monitoring in the time domain (spectral analysis).
Time frame: 8 weeks
This study is status unknown, as verified in May 2015. You cannot join it, but the record below documents what was studied.
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Hospital de Clinicas de Porto Alegre