Effects of Warm-up Intensity and Blood Flow Restriction

NCT05523674 | Completed

• 1 other identifier: Warm-up_BRF_FCT/UNESP
• Study Type: interventional
• Target: 108
• Locations: 1 country
• Sites: 2

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

Keywords

Vascular occlusion; Performance; Body temperature; warm-up

Outcome Measures

Primary Outcomes (6)

• Temperature

  Skin surface temperature will be evaluated using a thermographic camera

  At the baseline

• Temperature

  Skin surface temperature will be evaluated using a thermographic camera

  Immediately after warm-up

• Performance in Squat Jump Test

  The squat jump test will be performed at jumping platform (Multisprint, Hidrofit, Brazil)

  At the baseline

• Performance in Squat Jump Test

  The squat jump test will be performed at jumping platform (Multisprint, Hidrofit, Brazil)

  Immediately after warm-up

• Performance in 30 meter sprint

  the sprint test will be performed in a hall and two pairs of photoelectric cells (Multisprint®, Hidrofit, Brazil) will be used with an accuracy of 0.01 seconds.

  At the baseline

• Performance in 30 meter sprint

  the sprint test will be performed in a hall and two pairs of photoelectric cells (Multisprint®, Hidrofit, Brazil) will be used with an accuracy of 0.01 seconds.

  Immediately after warm-up

Secondary Outcomes (14)

• Pain threshold

  At the baseline

• Pain threshold

  Immediately after warm-up

• Muscle Pain

  At the baseline

• Muscle Pain

  Immediately after warm-up

• Perceived Effort Scale (Borg)

  At the baseline and Immediately after warm-up

Study Arms (3)

warm-up performed at 30% VO2max

EXPERIMENTAL

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.

Other: Warm-up exercise

warm-up performed at 80% VO2max

EXPERIMENTAL

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.

Other: Warm-up exercise

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

EXPERIMENTAL

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).

Other: Warm-up exercise with Blood Flow Restriction

Interventions

Warm-up exercise OTHER

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

Also known as: Warming-up, Aerobic Exercise

warm-up performed at 30% VO2max; warm-up performed at 80% VO2max

Warm-up exercise with Blood Flow Restriction OTHER

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

Also known as: Warming-up, Aerobic Exercise, Blood Flow Restriction

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

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

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

You may not qualify if:

• 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);

Sponsors & Collaborators

• Paulista University: lead

Study Sites (2)

Carlos Alberto Toledo Teixeira Filho

Presidente Prudente, São Paulo, 19060-900, Brazil

Location

Franciele Marques Vanderlei

Presidente Prudente, São Paulo, 55, Brazil

Location

MeSH Terms

Interventions

Warm-Up Exercise; Exercise; Blood Flow Restriction Therapy

Intervention Hierarchy (Ancestors)

Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena; Exercise Therapy; Rehabilitation; Aftercare; Continuity of Patient Care; Patient Care; Therapeutics; Physical Therapy Modalities

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: OTHER
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Phd Assistant Professor

Study Record Dates

• First Submitted: August 11, 2022
• First Posted: August 31, 2022
• Study Start: March 15, 2024
• Primary Completion: August 20, 2024
• Study Completion: December 15, 2024
• Last Updated: May 31, 2025

Record last verified: 2025-05

Locations

BR (2)