Physical Exercise, Hypertension
Conditions
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.
Interventions
OTHERLow intensity
Low intensity group: participants will be requested to perform the following exercises: 1)squat, 2) rowing, 3)deadlift and 4)bench press. All exercises will be performed with low intensity (40% of the maximum velocity used in one-repetition maximum) and will be supervised by a researcher.
OTHERhigh intensity
High intensity group: participants will be requested to perform the following exercises: 1)squat, 2)rowing, 3)deadlift and 4)bench press. All exercises will be performed with high intensity (80% of the maximum velocity used in one-repetition maximum) and will be supervised by a researcher.
Sponsors
Universidad Católica del Maule
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Intervention model description
Randomized clinical trial, single blinded.
Eligibility
Sex/Gender
ALL
Age
30 Years to 60 Years
Healthy volunteers
Yes
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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. |
Countries
Chile
Outcome results
None listed