Effects of an Instability Training Program Using Global Versus Selective Instability Devices
NCT Number: NCT06472648
Status: COMPLETED
Study Type: INTERVENTIONAL
Phases: NA
Conditions: Balance Instability Training
Interventions: OTHER: Proprioception training exercise plan with BOSU|OTHER: Proprioception training exercise plan with Blackboard (BB)
Sponsor: University of Valencia
Sex: ALL
Age: CHILD, ADULT
Enrollment: 20
Study Design: Allocation: RANDOMIZED|Intervention Model: PARALLEL|Masking: DOUBLE (INVESTIGATOR, OUTCOMES_ASSESSOR)|Primary Purpose: OTHER
Start Date: 2019-11-18
Completion Date: 2020-02-21
Locations: Rodrigo Martin-San Agustin, Valencia, Spain

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.

Primary Outcome Measures: Dynamic Balance (mSEBT), Firstly, for assessing dynamic balance, the three-directions modified Star Excursion Balance Test (mSEBT) and Emery Test were employed.

The mSEBT consists of standing on one leg while reaching with the contralateral leg the farthest possible point in three different directions (anterior, posteromedial, and posterolateral). The distance reached in each attempt was normalised with the leg length. Each participant was allowed to make two attempts with each leg and in each direction to practice. Then, three more attempts were performed. A 15-second rest time was allowed between attempts of the same position, and five minutes between the different directions. All measurements were made barefoot and with hands placed on hips. The mSEBT has demonstrated excellent inter- and intra-rater reliability., Pre and after 4 weeks of intervention|Dynamic Balance (Emery Test ), For the Emery Test, subjects should maintain single-leg stance on an Airex® Balance Pad, with their eyes closed, barefoot, and with their hands placed on their hips. The subjects were asked to remain as stable as possible for a maximum time of 180 seconds.

Three attempts were performed with 15-second rests and the best time obtained for each leg was registered. Before starting the measurements, the subjects were allowed to become familiarised with the test for 15 seconds., Pre and after 4 weeks of intervention|Ankle stability (Side Hop Test), The test consists of jumping laterally on one leg 30 cm delimited by two lines marked on the ground. Participants performed 10 repetitions barefoot (a total of 20 jumps) in the shortest possible time. Each participant made three attempts with each leg, with 1-minute rests. The best time for each leg was registered. One repetition was allowed before starting for practice., Pre and after 4 weeks of intervention