Effects of the Elastic Taping on the Chronic Ankle Instability: a Clinical Trial
Phase: NA
Conditions: Ankle Sprains, Chronic Ankle Instability, Athletes Foot
Sponsor: Universidade Norte do Paraná

EFFECTS OF AN ELASTIC BANDAGE PROTOCOL IN 
INDIVIDUALS WITH CHRONIC ANKLE INSTABILITY 
 
 
 
 
 
NCT number: unavailable 
 
Date of document: May 22, 2020 
 
 

Procedures: The volunteers will complete the sample characterization form 
containing the demographic data (age, sex, weight, height, BMI, dominance, level 
of physical activity, history of injuries in the lower limbs) and will sign the informed 
consent form. Then, they will answer the Cumberland Ankle Instability Tool 
questionnaire - brazilian-portuguese version and the American Orthopedic Foot 
and Ankle Society - Ankle-hindfoot Scale validated for Portuguese. 
After characterization of the sample and randomization in certain groups, 
evaluations of static postural control will be carried out through the force platform 
(BIOMEC400, EMG System do Brasil, SP Ltda.) In unipodal support on the 
unstable ankle. In the assessment of postural control, participants will be 
instructed to remain in unipodal support, barefoot for thirty seconds looking at the 
horizon (a mark will be fixed on the wall at a height of 2 meters), with the upper 
limbs relaxed beside the body, free lower limb without touching the test limb, 
maintaining knee flexion position at 90°. Participants will perform the test three 
times with a 30-second rest interval between each run. 
Subsequently, the Y Balance Test will be performed, which consists of reaching 
the greatest possible distance in three different directions (anterior, posterolateral 
and posteromedial) with the limb contralateral to the unstable ankle while this 
limb remains supported in the center of the intersection of measuring tapes in Y 
shape. (47) Each of the directions is tested three times and the 3 repetitions are 
averaged. 
Finally, the side hop test will be performed, which consists of one-legged lateral 
jumps over a distance of 30 cm between markings on the ground. There will be 
10 jumps, which will be counted from the starting point until the return to it. 
Participants will be instructed to perform as quickly as possible. In the event of a 
fall, touch of the pending limb to the ground or failure to pass the mark, the test 
will be discarded and performed again. 
Performed the three postural control tests, an elastic bandage will be applied on 
the ankle with instability or on the ankle with the lowest score on the CAIT 
questionnaire (in case of bilateral instability), if there is bilateral instability with the 
same score on the CAIT-p, bandaging will be performed in the dominant lower 
limb. The application area will be previously free of hair (performing trichotomy) 
and asepsis with 70% alcohol. The technique used will be the “technique for 
stabilizing the ankle”, where an “I” tape without a fixed point is placed from one 
malleolus to the other by the hindfoot and another “I” tape without a fixed point 
involves the ankle joint, starting from the calcaneal tendon to cross in front of the 
talus. The application will be carried out by a professional qualified by the Therapy 
Taping Method®. 
After applying the bandage, the volunteers will again perform the tests mentioned 
above. They will be instructed on how to care for the bandage (do not dry the 
area by rubbing the towel, but with light touches, do not cut the ends of the 
bandage if they are peeling off, do not remove and replace the bandage) to 
preserve the application and keep the application up to the room day after placed. 

 
- Experimental group: the application of the bandage will be carried out weekly, 
for five weeks, in the individuals allocated to this group. Each week the tension 
of the tapes will be increased, increasing 5% of tension per week in relation to 
the initial length. 
- Control Group: the application of the bandage will be carried out weekly, for five 
weeks, in the individuals allocated to this group. The applications will not suffer 
an increase in the tension of the tapes, they will only be placed on the application 
site. 
Initial assessment will be carried out on the first day, reevaluations in the third 
week and in the sixth week after the initial assessment. 
 
- Data analysis: 
The normal distribution of the sample data will be analyzed using the Shapiro 
Wilk test. If normality is established, an analysis of variance of the factors will be 
used for each dependent variable to compare the groups (elastic bandage without 
tension and elastic bandage with tension) in both tasks. All statistical analyzes 
will be performed in the SPSS statistical program (version 20.0) with the adopted 
significance of 5% (p <0.05).