Physiotherapy Intervention With Flossing Conditioned by Verbal Suggestion About Ankle Functionality in Amateur Runners

Summary

Limited ankle functionality is one of the main causes of runner injuries. The use of flossing techniques are used to improve functionality. The administration of an expectation can modulate corticospinal excitability, improving the therapeutic response.

The objective of the study is to evaluate the effect of inducing a positive expectation along with the application of flossing on the ankle functionality in healthy amateur runners.

Randomized clinical study, single blind, with follow-up period. 20 runners will be randomized to the two study groups: experimental (flossing technique with a positive expectation) and control (flossing technique with a neutral expectation). The study variables will be: dorsal ankle flexion (Weigh Bearing Lunge Test), isometric force in plantar ankle flexion (dynamometry), elastic-explosive force (Countermovement Jump) and stability (Y Balance Test). Using a Shapiro-Wilks analysis, the sample distribution will be calculated. The changes after each evaluation will be analyzed with the t-student test of related samples and through an ANOVA of repeated measures the intra and intersubject effect will be observed. The effect size will be calculated using Cohen's formula.

It is expected to obtain changes in the variables between both groups and in the group / time interaction, which suggest an effect of the expectation on corticospinal excitability in healthy athletes.

Conditions

• Running

Interventions

OTHER

Positive expectation

After heating, the physiotherapist will apply the bandage with flossing on both ankles, using 2 Voodoo Floss Bands (Power Guidance model). The distal to proximal bandage will begin with a tension of 50-70% and each lap of the bandage will cover 50% of the previous lap. There will be 3 figures of 8 that will cover the hindfoot and the distal third of the leg. With the bandage applied on both feet, the runners will perform plantar flexion and active dorsal flexion movements in a range of complete joint movement with both ankles, at a constant rate of 2 seconds of plantar flexion, followed by another 2 of dorsal flexion, during A period of 2 minutes. Next, the therapist will remove the bandages and the athlete will walk barefoot for a minute, to restore normal blood flow. During the first application of the bandage, the investigator will induce the positive expectation through a standardized phrase for all subjects

OTHER

Neutral expectation

After heating, the physiotherapist will apply the bandage with flossing on both ankles, using 2 Voodoo Floss Bands (Power Guidance model). The distal to proximal bandage will begin with a tension of 50-70% and each lap of the bandage will cover 50% of the previous lap. There will be 3 figures of 8 that will cover the hindfoot and the distal third of the leg. With the bandage applied on both feet, the runners will perform plantar flexion and active dorsal flexion movements in a range of complete joint movement with both ankles, at a constant rate of 2 seconds of plantar flexion, followed by another 2 of dorsal flexion, during A period of 2 minutes. Next, the therapist will remove the bandages and the athlete will walk barefoot for a minute, to restore normal blood flow. During the first application of the bandage, the researcher will not induce any expectations to the athletes.

Sponsors & Collaborators

• Investigación en Hemofilia y Fisioterapia

  lead NETWORK

Study Design

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

SINGLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

35 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2020-03-01

Primary Completion

2020-05-20

Completion

2020-06-10

Countries

• Spain

Study Locations