NCT04697433|Completed
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Sponsor study identifier
observational
48
1 country
1
Study Start
February 3, 2020
Actual (reported)Primary Completion
March 16, 2020
Actual (reported)Study Completion
March 16, 2020
Actual (reported)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.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
March 16, 2020
Actual (reported)Click on a node to explore related trials.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
February 3, 2020
Actual (reported)March 16, 2020
Actual (reported)March 16, 2020
Actual (reported)January 4, 2021
Actual (reported)January 6, 2021
Actual (reported)Muscle Tone
MyotonPro (MyotonAS, Tallinn, Estonia), measured in Hertz (Hz)
75 minutes
Stiffness
MyotonPro (MyotonAS, Tallinn, Estônia), measured in Newton / meter (N/m)
75 minutes
Elasticity
75 minutes
Mechanical Stress Relaxation Time
75 minutes
Creep
75 minutes
The evaluation of myotonometry will be carried out by two independent evaluators. The first evaluator will perform the test bilaterally on the middle deltoid, upper trapezius, pectoralis major, biceps brachii, rectus femoris, anterior tibialis, triceps brachii, lumbar multifidus, biceps femoris and soleus previously marked. Immediately after, the second appraiser will perform the same measurements in the same order (Inter-rater reliability). After a 15-minute interval, the retest (intra-rater reliability) will be performed following the same procedure and order as the test step.
The examiner should exert a slight pressure on the determined point to the necessary depth, which will be indicated by changing the color from red to green light on the device. The device has an automatically controlled preload (0.18 Newton (N)) that will be applied to the contact area by an automatic mechanical pulse, with a duration of 15 milliseconds (ms) and a constant force of 0.4 N , these oscillations will be registered by an accelerometer next to the measurement mechanism inside the device. For each evaluation, a series of 10 consecutive pulses (multiscan mode) will be used with an interval of one second between each pulse. In each shot, the tone, stiffness, elasticity, relaxation time and creep will be calculated.
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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.
University of Sao Paulo State
Presidente Prudente, São Paulo, 19060-900, Brazil
48 participants (actual enrollment reported by the registry).
First Submitted
January 4, 2021
First Posted
January 6, 2021
Study Start
February 3, 2020
Actual (reported)Effect of Light-Emitting Diode on the Strenght and Resistence Capacities of Cycling Athletes
Contact the study team to confirm eligibility.
Primary Completion
March 16, 2020
Actual (reported)Study Completion
March 16, 2020
Actual (reported)Last Updated
January 6, 2021
Record last verified: 2021-01
Individual data will not be disclosed, because as participants are under eighteen
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Source: ClinicalTrials.gov.
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