Effects of an Instability Training Program Using Global Versus Selective Instability Devices

Summary

The goal of this clinical trial was to compare the effects of a 4-week balance training programme using a GID or SID on functional dynamic balance and functional ankle stability in young healthy amateur soccer players.

The main question it aimed to answer are:

1\. Are there differences between using GID or SID in improving dynamic balance according to the Modified Star Excursion Balance Test (mSEBT) and the Emery test, and in improving functional ankle stability according to the Side Hop Test?

Participants were randomly allocated into two groups: GID balance training (i.e., with a BOSU®) and SID balance training (i.e., with Blackboard). The randomization and allocation were performed using the sealed envelope method. Both groups performed on a 4-weeks balance training program with the assigned device.

Participants were asked to:

* Perform a 5-minute conventional warm-up (cycling and active anke mobility exercises)
* Perform four balance exercises with a 3-kg medicine ball, on the unstable surface device assigned to each group (explanation of the exercises in the detailed description)

Researchers compared the results of the GID group with those of the SID group to determine the differences between devices in the improvement of dynamic balance and functional stability of the foot and ankle.

Conditions

• Balance Instability Training

Interventions

OTHER

Proprioception training exercise plan with BOSU

A 5' conventional warm-up (stationary cycling and active ankle mobility exercises) was performed. Ankle proprioception training exercise plan included: 1. A 30-second series of maintaining the single-leg stance position on the BOSU with extended knee and hip holding the ball with the arms stretched out above the head 2. A series of 10 reps on the BOSU where the subject was asked to pass from the supporting-leg hip and knee starting position to a 90º knee flexion squat, keeping the ball above their heads 3. A single series of 10 reps on the BOSU where the subject started with full limb extension of the supporting member and the ball held with both hands at chest height; from this position subjects were asked to bring the free leg from 45º hip extension to 45º hip flexion 4. 10 passes between the subject and a partner where the participants started with a total extension of the supporting limb on the BOSU and the ball held in both hands in front of them. 2' rest between exercises.

OTHER

Proprioception training exercise plan with Blackboard (BB)

A 5' conventional warm-up (stationary cycling and active ankle mobility exercises) was performed. Ankle proprioception training exercise plan included: 1. A 30-second series of maintaining the single-leg stance position on the BB with extended knee and hip holding the ball with the arms stretched out above the head 2. A series of 10 reps on the BB where the subject was asked to pass from the supporting-leg hip and knee starting position to a 90º knee flexion squat, keeping the ball above their heads 3. A single series of 10 reps on the BB where the subject started with full limb extension of the supporting member and the ball held with both hands at chest height; from this position subjects were asked to bring the free leg from 45º hip extension to 45º hip flexion 4. 10 passes between the subject and a partner where the participants started with a total extension of the supporting limb on the BB and the ball held in both hands in front of them. 2' rest between exercises.

Sponsors & Collaborators

• University of Valencia

  lead OTHER

Principal Investigators

• Rodrigo Martín-San Agustín, Doctor · University of Valencia

Study Design

Allocation

RANDOMIZED

Purpose

OTHER

Masking

DOUBLE

Model

PARALLEL

Eligibility

Min Age

16 Years

Max Age

35 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2019-11-18

Primary Completion

2020-02-21

Completion

2020-02-21

Countries

• Spain

Study Locations