Cardiac Response to Strength Training in Hypertensive Individuals

Not Applicable

Recruiting

• Conditions: Hypertension; Physical Exercise
• Interventions: Other: high intensity; Other: Low intensity

• Registration Number: NCT06370546
• Lead Sponsor: Universidad Católica del Maule

Brief Summary

This study aims to determine the acute effects of high and low-intensity strength training on cardiac autonomic control in hypertensive subjects

Detailed Description

The present study aims to determine the cardiovascular response in hypertensive individuals between 30 and 60 years old to one session of high and low intensity strength training.

Participants will undergo a low-intensity strength training including squats, barbell rows, deadlifts and chest presses with a load dynamic of 12 repetitions for 6 sets at an execution speed of less than 55 % of your maximum weight. This is followed by a one-week washout period. Subsequently, high intensity strength training is performed with the same exercises but with a load of 6 repetitions for 6 series at an intensity greater than 80% of the maximum repetition speed. The order of the sessions will be random.

After each session, blood pressure will be recorded for 24 hours using a holter monitor, which will report pressures during both day and night

The results obtained will be determined by the differences in the before and after values. Consequently, the behavior of the following variables: 1) heart rate variability, 2) blood pressure and 3) heart rate will determine the final results of this research.

The entire study will be carried out at the Catholic University of Maule, in its Kinesiology laboratory.

Study Timeline

• Study Start: 2023-03-20
• Study First Submitted: 2024-04-12
• Study First Submitted QC: 2024-04-12
• Study First Posted: 2024-04-17
• Status Verified: 2024-05
• Last Update Submitted: 2024-05-22
• Last Update Posted: 2024-05-23
• Primary Completion: 2024-07-20
• Study Completion: 2024-07-20

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 28

Inclusion Criteria

• Participants exclusively diagnosed with hypertension by a medical professional

Exclusion Criteria

• Participants with any other chronic medical condition
• Subjects with any upper or lower limb injury that prevents strength training
• Subjects with cardiovascular abnormalities other than hypertension

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
high intensity	high intensity	The low-intensity group undergoes a strength training program using barbells, weights and dumbbells consisting of 6 sets of 6 repetitions each, with an execution speed equal to or greater than 80% of the maximum velocity used in the one-repetition maximum
Low Intensity	Low intensity	The low-intensity group undergoes a strength training program using barbells, weights and dumbbells, consisting of 6 sets of 12 repetitions each, with an execution speed below 55% of the maximum velocity used in the one-repetition maximum

Primary Outcome Measures

Name	Time	Method
Heart rate variability	2 hours	Determine the effects of high and low-intensity strength training on heart rate variability, based on the time between each heartbeat, during the assessment
Blood pressure systolic	24 hours	Determine the effects of high and low intensity resistance training on blood pressure with a blood pressure monitor for 24 hours.
Blood pressure diastolic	24 hours	Determine the effects of high and low intensity resistance training on blood pressure diastolic with a blood pressure monitor for 24 hours.
Blood pressure mean	24 hours	Determine the effects of high and low intensity resistance training on blood pressure mean with a blood pressure monitor for 24 hours.
Heart Rate	24 hours	Determine the effects of high and low intensity strength training on the behavior of heart rate, using a heart rate monitor, throughout the intervention.

Trial Locations

Locations (1)

Universidad Católica del Maule; 🇨🇱 Talca, Maule, Chile