Analysis of Heart Rate Variability After a Physical Exercise Session

NCT ID: NCT05798975

Last Updated: 2025-05-14

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

36 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-04-01

Study Completion Date

2024-11-30

Brief Summary

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Systemic arterial hypertension (SAH) is a multifactorial clinical condition, characterized by sustained elevation of blood pressure levels, contributing to 50% of deaths from cardiovascular disease. The Autonomic Nervous System (ANS) plays a fundamental role in the regulation of Blood Pressure (BP) and is closely associated with Heart Rate (HR). HR changes are called Heart Rate Variability (HRV). In individuals with SAH, HRV indices are reduced compared to normotensive individuals, showing changes in autonomic modulation, thus increasing the risk for cardiovascular events. The objective of this study will be to analyze the Heart Rate Variability in individuals with controlled SAH after a session of aerobic (EA) or resistance (RE) physical exercise.

Detailed Description

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Controlled hypertensive individuals aged between 30 and 59 years will be selected, for convenience, who use the services of the Instituto de Cardiologia do Rio Grande do Sul. Volunteers will be randomly assigned to an EA session (40 minutes on cycle ergometer, 60% of heart rate reserve) or RE (2 exercises for lower limbs and 2 for upper limbs with 4 sets of 12 repetitions at 60% 1-RM) or control group without exercise. HRV data will be collected by ECG (Wincardio USB - Version 11.1.0.0, MICROMED Biotecnologia Ltda, Brasília - DF - Brazil) during 10 minutes before the exercise session, 10 minutes after the exercise session, 1h and 2h post-session . It is expected to estimate results that may demonstrate clarifications about the impact of a physical exercise session on HRV in controlled hypertensive individuals.

Conditions

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Hypertension

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

AE= Aerobic Exercise RE= Resistance Exercise CT= Control (no exercise)
Primary Study Purpose

HEALTH_SERVICES_RESEARCH

Blinding Strategy

DOUBLE

Participants Caregivers

Study Groups

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Aerobic Physical Exercise

Cycle ergometer exercise

Group Type EXPERIMENTAL

Resistance Exercise. 1 session of acute exercise

Intervention Type OTHER

2 exercises for lower limbs and 2 for upper limbs with 4 sets of 12 repetitions at 60% 1-RM. 40 minutes

no exercise

Intervention Type OTHER

Rest

Resistance Physical Exercise

Exercise with weights

Group Type EXPERIMENTAL

Aerobic Exercise. 1 session of acute exercise

Intervention Type OTHER

40 minutes on cycle ergometer, 60% of heart rate reserve

no exercise

Intervention Type OTHER

Rest

Control

No exercise. Rest

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Aerobic Exercise. 1 session of acute exercise

40 minutes on cycle ergometer, 60% of heart rate reserve

Intervention Type OTHER

Resistance Exercise. 1 session of acute exercise

2 exercises for lower limbs and 2 for upper limbs with 4 sets of 12 repetitions at 60% 1-RM. 40 minutes

Intervention Type OTHER

no exercise

Rest

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Controlled Systemic Alterial Hypertension

Exclusion Criteria

* Diabetes mellitus;
* heart failure;
* coronary artery disease;
* chronic renal failure;
* body mass index (BMI) ≥ 35 kg/m2;
* smokers;
* individuals with injuries to the upper and lower limbs that make the exercise protocol impossible;
* not using antihypertensive medication and using beta-blocker and/or alpha-blocker medication.
Minimum Eligible Age

30 Years

Maximum Eligible Age

59 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Instituto de Cardiologia do Rio Grande do Sul

OTHER

Sponsor Role lead

Responsible Party

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Diego Silveira da Silva

physical education professor.

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Diego Silveira da Silva

Porto Alegre, Rio Grande do Sul, Brazil

Site Status

Countries

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Brazil

Other Identifiers

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5964/21

Identifier Type: -

Identifier Source: org_study_id

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