Effects of Warm-up Intensity and Blood Flow Restriction

NCT ID: NCT05523674

Last Updated: 2025-05-31

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 108 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-03-15
• Study Completion Date: 2024-12-15

Brief Summary

Introduction: warming up has the function of preparing the body structures for a given task to be performed during sports, increasing body and muscle temperature, focusing on improving performance. Therefore, the use of the blood flow restriction technique (BFR) can be seen as a promising alternative for promoting greater mechanical and muscular stress, thus providing a more efficient warm-up and optimizing performance. Objectives: to analyze the effects of RFS used during low-intensity warm-up compared with low-intensity and high-intensity warm-up without RFS on performance (jump test and 30-meter sprint test) and skin surface temperature. In addition to analyzing and comparing, after the warm-up protocols with and without RFS, the acute responses on perceptual outcomes (perception of pain, change in sensitivity, subjective perception of exertion and perception of discomfort in relation to RFS) and muscle outcomes (tonus , muscle stiffness and elasticity). Methods: a randomized controlled clinical trial will be carried out, with 33 amateur soccer players aged between 18 and 35 years who will be randomly divided into three groups: low-intensity warm-up without RFS (30% VO2max), high-intensity warm-up without RFS ( 80% VO2max) and low-intensity warm-up associated with BFR (80% of total occlusion pressure) [30% VO2max-BFR]. All groups will carry out the heating protocol and the outcomes will be evaluated at baseline and immediately after the end of the heating, as well as 10 and 20 minutes after its completion, namely: skin surface temperature through thermography; tone, stiffness and muscle elasticity by myotometry, subjective perception of pain (VAS); pain threshold through the pressure algometer; subjective perception of exertion (BORG scale); perception of discomfort in relation to RFS (LIKERT-CR-10 scale); 30-meter sprints measured through photocells and vertical jump, measured through the force platform. Descriptive statistics will be used and comparisons will be made using the generalized linear mixed model, assuming a significance level of p<0.05.

Conditions

Healthy Men

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: OTHER
• Blinding Strategy: DOUBLE

Study Groups

warm-up performed at 30% VO2max

The warm-up exercise will be performed on an ergometric treadmill, through a protocol of 15 minutes duration, with the first 5 minutes of acceleration, until reaching 30% of VO2max, the following 5 minutes of maintenance and the remaining 5 minutes being of slowdown.

Group Type: EXPERIMENTAL

Warm-up exercise

Intervention Type: OTHER

The warm-up exercise will be performed on a treadmill.

warm-up performed at 80% VO2max

The warm-up exercise will be performed on an ergometric treadmill, through a protocol of 15 minutes duration, with the first 5 minutes of acceleration, until reaching 80% of VO2max, the following 5 minutes of maintenance and the remaining 5 minutes being of slowdown.

Group Type: EXPERIMENTAL

Warm-up exercise

Intervention Type: OTHER

The warm-up exercise will be performed on a treadmill.

warm-up performed at 30% VO2max with Blood Flow Restriction

The warm-up exercise will be performed on an ergometric treadmill, through a protocol of 15 minutes of duration, with the first 5 minutes of acceleration, until reaching 30% of VO2max, the following 5 minutes of maintenance and the remaining 5 minutes being of slowdown. During the warm-up exercise, a pressure cuff will be used on each leg, with the blood flow restriction technique (80% of arterial occlusion pressure).

Group Type: EXPERIMENTAL

Warm-up exercise with Blood Flow Restriction

Intervention Type: OTHER

The warm-up exercise will be performed on a treadmill and pressure cuffs will be used for the blood flow restriction technique.

Interventions

Warm-up exercise

The warm-up exercise will be performed on a treadmill.

Intervention Type: OTHER

Warm-up exercise with Blood Flow Restriction

The warm-up exercise will be performed on a treadmill and pressure cuffs will be used for the blood flow restriction technique.

Intervention Type: OTHER

Other Intervention Names

Warming-up; Aerobic Exercise; Warming-up; Aerobic Exercise; Blood Flow Restriction

Eligibility Criteria

Inclusion Criteria

• male
• healthy
• amateur soccer player
• aged between 18 and 35 years

Exclusion Criteria

• smokers;
• alcoholics;
• use drugs that influenced cardiac autonomic activity;
• cardiovascular, metabolic or endocrine diseases;
• having one or more predisposing risk factors for thromboembolism;
• history of lower extremity surgery or musculoskeletal injury within the last six months that may impair your performance during testing or warm-up (e.g., meniscal repair, ligament reconstruction, muscle injury, tendinopathy, lower extremity patellofemoral pain, and/or back pain);

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 35 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Paulista University

OTHER

Sponsor Role: lead

Responsible Party

Franciele Marques Vanderle

Phd Assistant Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Carlos Alberto Toledo Teixeira Filho

Presidente Prudente, São Paulo, Brazil

Franciele Marques Vanderlei

Presidente Prudente, São Paulo, Brazil

Countries

Brazil

Other Identifiers

Warm-up_BRF_FCT/UNESP

Identifier Type: -

Identifier Source: org_study_id