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Autonomical and Hemodynamic Repercussions on Excentric Resistance in Different Intensities With Blood Flow Restriction

NCT03942510 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2021-03-09

No results posted yet for this study

Summary

Introduction: Studies on resistance training (RT) associated with blood flow restriction (BFR) have emerged as an alternative method of gaining strength and hypertrophy; however, the cardiovascular and autonomic repercussion of BFR at different intensities is unknown. Thus, it becomes relevant to investigate this type of training in post-exercise. Objective: investigate and compare autonomic and hemodynamic responses of acute eccentric RT with different intensities associated or not to BFR in healthy youngsters. Method: This is a randomized clinical trial including 60 healthy men aged 18-35 years, divided into four groups according to exercise intensity and BFR: 80% without BFR, 40% without BFR, 80% with BFR and 40% with BFR. Exercise intensity will be determined by the peak of excentric torque on the dinamometer isokinetic method and by the BFR, as being 40% of the intensity required for the complete examination of the blood flow evaluated by Doppler. Participants will do an eccentric femoral quadriceps muscle exercise session on the isokinetic dynamometer according to the previously randomized group. For recovery analyzes, the recovery heart rate (HRR) in the 1st (HRR1) and 2nd (HRR2) minute, rMSSD of 30 seconds, the hemodynamic parameters (heart rate, systolic and diastolic blood pressure, respiratory rate, peripheral oxygen saturation and rate pressure product) and heart rate variability (HRV) indices analyzed in the time domain (mean HR, rMSSD and SDNN), frequency domain (LF and HF \[nu and ms2\]) and Poincaré plot (SD1 and SD2). The analysis will be occur on baseline, immediately e after the excentric exercise and in the post exercise period for 60 minutes. Descriptive statistics method and comparison of HRV indices and hemodynamic parameters between moments and groups will be performed with the aid of the analysis of variance technique for the repetitive measures model without the schema of two sets of tests to follow . The level of significance will be p \<0.05.

Conditions

  • Exercise

Interventions

OTHER

eccentric exercise with blood flow restriction

High/low intensity eccentric training group (80% and 40% of isometric peak torque) with or not blood flow restriction.

Sponsors & Collaborators

  • Paulista University

    lead OTHER

Principal Investigators

  • Franciele M Vanderlei, PhD · Paulista State University

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
35 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-03-11
Primary Completion
2019-10-17
Completion
2020-12-22

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03942510 on ClinicalTrials.gov