Inspiratory Muscle Training X CardioBreath App Effects On Vagal Modulation And Pulse Wave Velocity

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

24 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-09-01

Study Completion Date

2025-07-30

Brief Summary

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Existing data points to relevant beneficial effects of respiratory exercises on cardiovascular health, with special regards to decreases on arterial pressure and improves on autonomic and vascular profiles, though mechanistics of such results have not yet been cleared. Among the available ways to perform respiratory exercises, there is the highly recommended Inspiratory Muscle Training (IMT) and slow breathing exercises like Yoga pranayamas. Lately, the development of new technologies has allowed the use of Apps to perform respiratory exercises. This study will be take the just developed CardioBreath®App to validate it as a tool to perform respiratory exercises. Therefore, it will be compared to IMT on cardiac vagal modulation and pulse wave velocity on normotensive post menopause women.

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Detailed Description

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Menopause years represent an increasing risk for hypertension and autonomic nervous system (ANS) and vascular imbalance. Existing data point to beneficial effects of respiratory exercises either on ANS and light on therapeutic relevance of these kind of exercises on prevention and treatment of cardiovascular and pulmonary diseases. However, few data is available about the effects of respiratory exercises on both vascular function and interactions with ANS. Besides that, recommendations of slower respiratory rates are associated to healthier physical and psychological states. Among available techniques to perform breathing exercises, most referenced are Inspiratory Muscle Training (IMT) and Yoga based slow breathing (pranayamas). New technologies have allowed the development of Apps which aim to ease the possibilities of exercising breathing.

IMT uses a mouth device for pressure adjustment and presents a variety e training forms including combinations of intensity and volume through loads adjustment. It aims the enhancement of respiratory muscles strength and endurance.

CardioBreath®App has been developed by experienced physical education and yoga professional based on individual prescription of respiratory rates to workout through voice and image guidance of both posture and breathing technique. The performance might be followed through a progression map. It´s available in portuguese language for Android and Ios, has been submitted to Brazilian Trend Marks Institute (INPI) which has not shown opposition to the registration.

It´s a randomized clinical trial recruiting normotensive post menopause women. Eligible participants will be assessed by Finometer for blood pressure and heart rate variability as measures for autonomic outcomes. Data analysis of these data will be processed by CardioSeries software through Fourier fast transform (FFT) in order to generate vagal and sympathetic values. For pulse wave velocity and central arterial pressure the participants will be assessed by Complior Analyser.

The participants will be randomized into 3 intervention groups as follows: IMT, IMT placebo and CardioBreath®App. The intervention will long five weeks. The exercises will be performed at home for five days/ week during 10 minutes and will be registered by audio for whatsapp (IMT) and "Progress" graphics (CardioBreath®App) Once a week they will visit the laboratory set to adjust loads (IMT) and respiratory rates in CardioBreath®App groups, respectively.

After five weeks the participants will be re-evaluated for all outcomes described above.

Data analysis will be provided by ANOVA of two repeated measures and Bonferroni post hoc. All data will be presented in mean +- standard deviation.

Conditions

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Postmenopausal Disorder Autonomic Imbalance Vascular Stiffness

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SEQUENTIAL

The participants will be randomized into 3 intervention groups as follows: IMT, IMT placebo and CardioBreath®App. The intervention will long five weeks. The exercises will be performed at home for five days/ week during 10 minute

Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Participants will not know about other arms. Outcome assessors will not know the arms participant belong.

Study Groups

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IMT PowerBreath

Participants will have PowerBreath device for IMT adjusted for 30% of maximal inspiratory pressure and will perform the exercise at home for five days/week during 10 minutes for five weeks.

An once a week meeting will provide re-adjustment of load through maximal inspiratory pressure performance

Group Type ACTIVE_COMPARATOR

IMT PowerBreath

Intervention Type DEVICE

Inspiratory Muscle Training (IMT) performed with 30% load based on Maximal Inspiratory Pressure

IMT PowerBreath Placebo

Participants will have PowerBreath device for IMT with no load and will perform the exercise at home for five days/week during 10 minutes for five weeks.

An once a week meeting will not re-adjustment the load though maximal inspiratory pressure performance will be performed

Group Type PLACEBO_COMPARATOR

IMT PowerBreath Placebo

Intervention Type DEVICE

Inspiratory Muscle Training (IMT) without load

CardioBreathApp

CardioBreathApp group will have the app settings of profile and spontaneous respiratory rate to determine the exercise rate of exercises, which will be performed at home for five days/week during 10 minutes for five weeks An once a week meeting will provide re-adjustment of respiratory rate to perform exercises

Group Type ACTIVE_COMPARATOR

CardioBreathApp

Intervention Type DEVICE

Respiratory exercises performed with CardioBreathApp prescription and voice and visual guidance

Interventions

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CardioBreathApp

Respiratory exercises performed with CardioBreathApp prescription and voice and visual guidance

Intervention Type DEVICE

IMT PowerBreath

Inspiratory Muscle Training (IMT) performed with 30% load based on Maximal Inspiratory Pressure

Intervention Type DEVICE

IMT PowerBreath Placebo

Inspiratory Muscle Training (IMT) without load

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Follicle Stimulating Hormone (FSH)\>35mui/ml
* minimum 12 months amenorrhea
* sedentary life style (less than 150 minutes per week of exercise)

Exclusion Criteria

* Hypertension
* Diabetes
* Obesity
* Use of Betablockers
* recent cardiovascular events or surgery
* renal alterations
* respiratory and/or motor pathologies
* smoking
* BMI\>29,9

Minimum Eligible Age

45 Years

Maximum Eligible Age

65 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes