Heart Inflammation and Mental Stress Study

NCT ID: NCT03695146

Last Updated: 2024-02-15

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

COMPLETED

Clinical Phase

NA

Total Enrollment

52 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-08-19

Study Completion Date

2023-12-22

Brief Summary

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The aim of the study is to investigate the neural underpinnings of cardiovascular reactivity to mental stress as a function of HIV and hypertensive risk.

Detailed Description

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The main objectives of the study are to assess (1) patterns of brain activity/connectivity that confers greater cardio-autonomic/emotion regulation, (e.g., heart rate variability, blood pressure reactivity, inflammatory-immune activation, etc.), during rest, mental stress, and anger-related distress, (2) whether changes in breathing pace mitigate task-based effects on cardio-autonomic-immune regulation, and (3) whether these patterns vary as a function of HIV or pre-hypertensive (HTN) status-related changes to the brain structures underlying cardioautonomic and emotion regulation.

Conditions

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Hypertension

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Paced breathing

Individuals will be asked to sit in a quiet room while sensors collect their heart rate, respiratory rate and blood pressure for approximately 45 minutes. Individuals in this arm will engage in a paced breathing. Initial respiratory rate will be measured with a transducer. Participants will be connected to a paced breathing device (RESPERATE) that will gradually reduce the pace of audio tones presented to those individuals from spontaneous breathing rate down to 6 - 8 breaths per minute.

Group Type EXPERIMENTAL

Paced breathing

Intervention Type BEHAVIORAL

Individuals will be fitted with a respiratory transducer and receive auditory tones with which to pace their rate of inspiration and expiration in the experimental group.

Relaxing music

Individuals will be asked to sit in a quiet room while sensors collect their heart rate, respiratory rate and blood pressure for approximately 45 minutes. Individuals will be provided with an audio device that plays soothing/relaxing music at a similar range (beats per minute) of the auditory signal presented during the experimental condition. Subjects will not be instructed how to breathe in this arm.

Group Type ACTIVE_COMPARATOR

Active relaxation

Intervention Type BEHAVIORAL

Individuals will be provided with headphones while resting quietly listening to relaxing tones/music.

No intervention

Individuals will be asked to sit in a quiet room while sensors collect their heart rate, respiratory rate and blood pressure for approximately 45 minutes.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Paced breathing

Individuals will be fitted with a respiratory transducer and receive auditory tones with which to pace their rate of inspiration and expiration in the experimental group.

Intervention Type BEHAVIORAL

Active relaxation

Individuals will be provided with headphones while resting quietly listening to relaxing tones/music.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

1. pre-hypertension screening.
2. HIV-antibody testing.

Exclusion Criteria

1. current use of anti-lipid, antihypertensive, or heart rate altering medications;
2. current or lifetime history of cardiovascular disease diagnosis or treatment including pulmonary stenosis, heart valve abnormalities and hypertension;
3. current or lifetime diagnoses of cancer, kidney/liver disease, hypertension, Type 1 or Type 2 diabetes;
4. history of trauma, cerebral infarction or hemorrhage;
5. current diagnosis and/or treatment for hypertension;
6. severe cognitive impairment;
7. current treatment or diagnosis of psychiatric illness;
8. metal implants or debris within the body; or pregnancy;
9. body mass index \> 35;
10. use of hormone replacement therapy; and current smoker.
Minimum Eligible Age

21 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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National Heart, Lung, and Blood Institute (NHLBI)

NIH

Sponsor Role collaborator

University of Miami

OTHER

Sponsor Role lead

Responsible Party

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Roger McIntosh

Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Roger C McIntosh, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

University of Miami, College of Arts and Sciences

Locations

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University of Miami

Miami, Florida, United States

Site Status

Countries

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United States

Other Identifiers

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K01HL139722-01

Identifier Type: NIH

Identifier Source: secondary_id

View Link

20180631

Identifier Type: -

Identifier Source: org_study_id

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