Reliability of Myotonometry in Swimming Athletes

Completed

• Conditions: Athletes

• Registration Number: NCT04697433
• Lead Sponsor: São Paulo State University

Brief Summary

The clinical analysis of athletes has been performed in the sports field to obtain parameters for reliable evaluations. Among the tools used is the myotonometry, an analysis capable of quantitatively measuring tone, stiffness and elasticity. Its reliability has been tested in several populations, however, showing changes in results and presenting high variability in the confidence interval, also, the values of myotonometry differ according to sample specificity and the biomechanical properties of each muscle. Therefore, it seems pertinent to perform the reliability analysis in swimming athletes and verify their applicability and if the values of tone and muscular biomechanical properties vary according to the specificity of the modality. It will be a test and retest study composed of 50 young male and female swimming athletes, aged between 12 and 20 years. The evaluation of myotonometry will be performed randomly by two evaluators and the parameters measured will be: tone, stiffness, elasticity, relaxation time of mechanical stress and displacement. In the test stage, the first evaluator will perform the measurements bilaterally on the muscles and the second evaluator will perform the same measurements in the same order immediately after the first one. After 15 minutes, the retest will be performed following the same order of evaluators in the test. For characterization of sample will be used descriptive statistic through central tendency and variability for all variables collected. Relative reliability will be tested by the Intraclass Correlation Coefficient (ICC). Absolute reliability will be verified by means of standard error of measurement (SEM), values of least detectable change (MMD) and coefficient of variation (CV). The statistical package SPSS Statistics 22.0 will be used to conduct the reliability analyses.

Detailed Description

Not available

Study Timeline

• Study Start: 2020-02-03
• Primary Completion: 2020-03-16
• Study Completion: 2020-03-16
• Status Verified: 2021-01
• Study First Submitted: 2021-01-04
• Study First Submitted QC: 2021-01-04
• Last Update Submitted: 2021-01-04
• Study First Posted: 2021-01-06
• Last Update Posted: 2021-01-06

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 48

Inclusion Criteria

• Healthy swimming athletes

Exclusion Criteria

• Being an alcoholic, consuming drugs, smoking or anti-inflammatory and / or analgesic drugs less than 24 hours before the test, presenting anemia, inflammatory process, diabetes, cardiovascular disease, episodes of muscle-tendon or osteoarticular injury in the lower, upper and / or lower limbs spine in the last three months, in addition to swimming for less than two years.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Stiffness	75 minutes	MyotonPro (MyotonAS, Tallinn, Estônia), measured in Newton / meter (N/m)
Muscle Tone	75 minutes	MyotonPro (MyotonAS, Tallinn, Estonia), measured in Hertz (Hz)

Secondary Outcome Measures

Name	Time	Method
Mechanical Stress Relaxation Time	75 minutes	MyotonPro (MyotonAS, Tallinn, Estonia), measured in milliseconds (ms)
Creep	75 minutes	MyotonPro (MyotonAS, Tallinn, Estonia)
Elasticity	75 minutes	MyotonPro (MyotonAS, Tallinn, Estonia)

Trial Locations

Locations (1)

University of Sao Paulo State; 🇧🇷 Presidente Prudente, São Paulo, Brazil