Clinical trial NCT01764620: Effects of Muscle Fatigue and a Taping Technique on Shoulder Motion of Athletes
Official title: Effects of Muscle Fatigue and Scapular Taping on Shoulder Kinematics of Overhead Athletes
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Shoulder Injury
Muscle Fatigue
Keywords: shoulder
muscle fatigue
kinematics
athletes
Lead sponsor: Universidade Federal de Sao Carlos
Sponsor class: OTHER
First posted: 2013-01-09
Enrollment: 20
Sex: ALL
Minimum age (years): 18
Maximum age (years): 30
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: PREVENTION

Brief summary: The purpose of this study is to investigate the effects of muscle fatigue in the scapular kinematics of overhead athletes with and without using a kinesio taping technique for facilitating lower trapezius function. The hypothesis is that the taping technique could compensate for the negative effects caused by muscle fatigue in the scapular kinematics of healthy overhead athletes.

Detailed description: Muscle fatigue is a potential cause of shoulder injuries in overhead athletes. Considering the important role of lower trapezius for functional scapular stability, it is suggested that a kinesio taping technique for facilitating its function could compensate for the negative effects of muscle fatigue on scapular kinematics. This is a randomized crossover study and all included athletes will be evaluated in three sessions, with a period of seven days between them: Control (fatigue protocol, without taping), Kinesio Taping (fatigue protocol with elastic taping applied with tension) and Sham (fatigue protocol with taping applied without tension). During each session, tridimensional kinematics of scapula and humerus and electromyography of serratus anterior and trapezius (upper and lower portions) muscles of dominant shoulder will be evaluated, during scaption and throwing movements, immediately before and immediately after the fatigue protocol.The changes in scapular movements (before versus after the fatigue protocol) will be compared among the sessions.

Eligibility criteria: Inclusion Criteria:

* Overhead athletes regularly training;
* No report of shoulder pain in the last 6 months.

Exclusion criteria:

* Previous shoulder or neck surgery;
* Previous shoulder dislocation.

Primary outcomes:
measure: Changes in scapular internal/external rotations, upward/downward rotations and anterior/posterior tilt movements
timeFrame: An average of 3 minutes before and an average of 3 minutes after the fatigue protocol, in each of the 3 evaluation sessions.
Secondary outcomes:
measure: Changes in the median frequency of electromyographic signal from upper and lower trapezius and serratus anterior muscles.
timeFrame: An average of 3 minutes before and an average of 3 minutes after the fatigue protocol, in each of the 3 evaluation sessions.
Other outcomes:
Locations:
city: São Carlos
country: Brazil
facility: Universidade Federal de São Carlos
state: São Paulo
Study officials:
affiliation: Universidade Federal de Sao Carlos
name: Gisele G Zanca, MSc
role: PRINCIPAL_INVESTIGATOR
affiliation: Universidade Federal de Sao Carlos
name: Stela M Mattiello, PhD
role: STUDY_DIRECTOR
References: