Effects of Blood Flow Restriction and Small-Sided Games on Soccer Passing and Dribbling Stability Under Fatigue (BFR-SSG)

Beijing Sport University

Status: Completed

Conditions: Athletic Performance

Treatments: Behavioral: Small-Sided Games (SSG) Control; Behavioral: Blood Flow Restriction + Small-Sided Games (BFR-SSG)

Study type: Interventional

Funder types: Other

Identifiers

NCT07496944

2026027H

Details and patient eligibility

About

This study aims to investigate whether applying blood flow restriction (BFR) during small-sided soccer games (SSG) can help soccer players maintain their passing and dribbling stability when they are fatigued. The study includes 40 young male soccer players. Participants will be randomly divided into two groups:

One group will wear pressurized BFR cuffs on their legs (80% of limb occlusion pressure) during a 4v4 training game.

The other group will act as a control, wearing the same cuffs but without any pressure (0% pressure) during the exact same training game.Both groups will complete a 6-week training program, practicing 3 times a week. Before and after the 6-week period, researchers will test the players' physical and technical skills (such as jumping, passing, and dribbling). Importantly, these tests will be conducted both before and immediately after a tiring 45-minute exercise routine to see which training method is more effective at preventing performance drops caused by fatigue.

Full description

This study utilizes a randomized, single-blind, placebo-controlled parallel group design. A total of 40 young male soccer players with systematic training backgrounds will be recruited. Following baseline testing, participants will be randomly assigned to either the BFR-SSG group or the SSG control group.The intervention spans 6 weeks, featuring three standardized 90-minute training sessions per week. The core intervention consists of a 4v4 small-sided game module (4 sets of 4 minutes). During this module, the BFR-SSG group will wear pneumatic cuffs inflated to 80% of their individual Limb Occlusion Pressure (LOP), while the control group will wear uninflated cuffs (0% LOP).Pre- and post-intervention assessments will systematically evaluate physiological adaptations (blood lactate, creatine kinase) , neuromuscular function (Countermovement Jump) , and sport-specific technical stability (Loughborough Soccer Passing Test and a 20m change-of-direction dribbling test). To specifically assess performance under metabolic stress, the technical and neuromuscular tests will be conducted at baseline and immediately following a standardized 45-minute fatigue-inducing protocol (Modified LIST). The primary goal is to quantify the attenuation rate of passing and dribbling performance under fatigue and determine if BFR combined with SSG provides superior chronic adaptations compared to SSG alone

Enrollment: 40 patients

Sex: Male

Ages: 18 to 30 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Young male soccer players. Possess a systematic soccer specific training background and maintain a stable competitive state.

Cleared by the Physical Activity Readiness Questionnaire (PAR-Q), confirming that cardiovascular and metabolic systems can tolerate high-intensity physical testing and blood flow restriction interventions.

Exclusion criteria

• Any recent history of neuromuscular or musculoskeletal system injuries. Current smoking habit. Consumption of any sports nutrition supplements or drinks that could significantly affect muscle performance or neural excitability (e.g., creatine, caffeine, beta-alanine) within 3 months prior to the start of the study and throughout the experimental period.

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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40 participants in 2 patient groups

Experimental: BFR-SSG Group

Experimental group

Description:

Participants are assigned to the blood flow restriction combined with small-sided games group. They wear compression cuffs inflated to 80% of their individualized Limb Occlusion Pressure (LOP) during the core small-sided games training.

Treatment:

Behavioral: Blood Flow Restriction + Small-Sided Games (BFR-SSG)

Sham Comparator: SSG Control Group

Sham Comparator group

Description:

Participants are assigned to the control group. They undergo the exact same small-sided games training while wearing identical cuffs that remain uninflated (0% LOP) to serve as a placebo.

Treatment:

Behavioral: Small-Sided Games (SSG) Control