Low Load Resistance Exercises With Blood Flow Restriction Versus High Load Resistance Exercises

NCT ID: NCT05958056

Last Updated: 2023-08-16

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 22 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-03-01
• Study Completion Date: 2022-07-01

Brief Summary

Practical blood flow restriction (PBFR) is a new technique of reducing the venous return using a band with a pressure that is applied using a perceived pressure scale. The studies that investigate the acute effect of using PBFR and regular high intensity exercises on the level of growth hormone (GH) and blood lactate (BL) after lower extremity training in collegiate athletes are scarce.

Detailed Description

Practical blood flow restriction (PBFR) is a new technique of reducing the venous return using a band with a pressure that is applied using a perceived pressure scale. The studies that investigate the acute effect of using PBFR and regular high intensity exercises on the level of growth hormone (GH) and blood lactate (BL) after lower extremity training in collegiate athletes are scarce. Therefore, this study aimed to investigate the acute effect of a single session low load resistance exercises with PBFR compared to a high load resistance exercises without PBFR on the levels of GH and BL. A convenience sample of collegiate athletes were allocated to either an experimental group that performed low resistance exercises with PBFR or a control group that performed high resistance exercises without PBFR. The levels of GH and BL were examined in 3 time points: pre-training, immediate post-training, and 15 minutes post-training for both groups. Analysis of Variance (ANOVA) was used to assess the main and interaction effects of the groups.

Conditions

Athletes

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: SCREENING
• Blinding Strategy: NONE

Study Groups

Low load resistance exercises with Practical blood flow restriction (PBFR)

Participants in the experimental group performed one session of 30% 1RM with Practical blood flow restriction training. The number of repetitions in every set was 15 times with PBFR.19 Participants in the experimental group used the elite band (occlusion training bands) for both thighs during the training session. The width of the thigh band was 5cm, which would produce a pressure between 160-240 mmHg. This pressure range is appropriate for most of the individuals who used PBFR.27 The perceived pressure scale (PPS) was used to estimate the appropriate pressure (7 out of 10) in training before performing the exercises.28,29 The blood flow restriction bands booklet was used30 along with previous studies to design the training session. Participants removed the BFR band immediately after the end of the training session.

Group Type: EXPERIMENTAL

Resistance exercise

Intervention Type: OTHER

The training session included leg curl and leg extension exercises with 4 sets each. Participants started with leg extension exercise for 4 sets with a 30-second rest periods between the sets. Then, participants took a rest for 60 seconds. Afterward, participants performed leg curl exercise for 4 sets with a 30-second rest periods between the sets. Exercises in each set were performed continuously (uninterrupted) with a speed of 2 seconds for each repetition and a medium exercise performance speed.

High resistance exercises

Participants in the control group performed one session of 80% 1RM without PBFR. The number of repetitions in every set was 10 times.

Group Type: ACTIVE_COMPARATOR

Resistance exercise

Intervention Type: OTHER

The training session included leg curl and leg extension exercises with 4 sets each. Participants started with leg extension exercise for 4 sets with a 30-second rest periods between the sets. Then, participants took a rest for 60 seconds. Afterward, participants performed leg curl exercise for 4 sets with a 30-second rest periods between the sets. Exercises in each set were performed continuously (uninterrupted) with a speed of 2 seconds for each repetition and a medium exercise performance speed.

Interventions

Resistance exercise

The training session included leg curl and leg extension exercises with 4 sets each. Participants started with leg extension exercise for 4 sets with a 30-second rest periods between the sets. Then, participants took a rest for 60 seconds. Afterward, participants performed leg curl exercise for 4 sets with a 30-second rest periods between the sets. Exercises in each set were performed continuously (uninterrupted) with a speed of 2 seconds for each repetition and a medium exercise performance speed.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Student collegiate athletes.
• Age of 18 years and older.
• Free from any cardiovascular or respiratory disorders and did not have any injuries during the previous 12 months.

Exclusion Criteria

• Students who were taking any medications for chronic conditions.
• Student who were taking any supplements.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

The Hashemite University

OTHER

Sponsor Role: collaborator

University of Jordan

OTHER

Sponsor Role: lead

Responsible Party

Alia A. Alghwiri

Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Alia Alghwiri, PhD

Role: STUDY_DIRECTOR

The University of Jordan

Locations

The University of Jordan

Amman, , Jordan

Countries

Jordan

Other Identifiers

4/2019

Identifier Type: -

Identifier Source: org_study_id