Clinical trial NCT04697433: Reliability of Myotonometry in Swimming Athletes
Official title: Reliability of Myotonometry in Swimming Athletes
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Athletes
Lead sponsor: São Paulo State University
Sponsor class: OTHER
First posted: 2021-01-06
Enrollment: 48
Sex: ALL
Minimum age (years): 12
Maximum age (years): 20
Standard ages: CHILD
ADULT
Accepts healthy volunteers: yes
Observational model: COHORT
Time perspective: CROSS_SECTIONAL
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Young swimming athletes who regularly train and are members of the swimming teams of the 4th region of the state of São Paulo, of the São Paulo Aquatic Federation (FAP), of the cities of Presidente Prudente, Votuporanga and São José do Rio Preto.

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.


Eligibility criteria: 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.

Primary outcomes:
measure: Muscle Tone
timeFrame: 75 minutes
measure: Stiffness
timeFrame: 75 minutes
Secondary outcomes:
measure: Elasticity
timeFrame: 75 minutes
measure: Mechanical Stress Relaxation Time
timeFrame: 75 minutes
measure: Creep
timeFrame: 75 minutes
Other outcomes:
Locations:
city: Presidente Prudente
country: Brazil
facility: University of Sao Paulo State
state: São Paulo
Study officials:
References: