Reliability of a Endurance and a Strength Test for Shoulder Rotation
Condition: Fatigue
MeSH terms: Fatigue
Study type: Observational

Summary: 
      Introduction: Verification of the progression of individuals submitted to training programs
      is performed by diagnostic tests with a focus on strength and muscular endurance. Among the
      tools used are the elastic bands, the halter, the pulley, the digital dynamometer and,
      additionally, the isokinetic dynamometer, considered the gold standard of evaluation.
      However, there is a lack of standardization in assessments and scarcity in the exploration of
      some tools and some muscle groups. Observation is often restricted to a particular study
      design and makes comparisons difficult even with the use of the same tool. Thus, to include
      different clinical possibilities in the same scenario can enrich the discussion about the
      topic. Objective: To develop and analyze the validity and reliability of a maximal muscle
      strength test for the external rotator muscles of the shoulder in five tools; To develop and
      analyze the validity and reliability of a localized resistance test for the external rotator
      muscles of shoulder in three different percentages of maximum strength (60%, 70%, 80%) in
      four tools; To characterize by means of the physiological response the localized muscular
      endurance test with the load that presents with the highest reliability values in each tool.
      Method: The study will consist of a sample of 50 participants of both genders, and will be
      performed in 3 steps: (1) Validation and reliability of the maximum muscle strength test; (2)
      Reliability of the muscular endurance test (MET); (3) Physiological characterization of the
      muscular endurance test (MET). Stage 1 will be held in 3 sessions (familiarization, test and
      retest) in which participants will perform 5 tests of maximum strength with different tools
      (elastic bands, pulley, halter, digital dynamometer and isokinetic dynamometer). Stage 2,
      consisting of 6 sessions, will be tested and retest of a muscular endurance test with
      different loads (70%, 80% and 90% of maximum force) with the same devices of step 1, except
      the digital dynamometer. In Step 3 participants will be selected with the lowest variations
      between the test and retest in the variable "time" to perform the physiological
      characterization of the test with the different tools. In order to observe the physiological
      response, we will analyze the lactic anaerobic (lactate concentration), allelic anaerobic
      (post-exercise oxygen uptake (EPOC) and aerobic (VO 2 values) parameters). The statistical
      package SPSS Statistics 22.0 will be used to conduct the analyzes. Key words: Fatigue,
      Physical resistance, Muscle strength, Lactate.
    


Intervention name(s): Maximal muscle strength Test; Exhaustion test
Intervention type(s): Diagnostic Test; Diagnostic Test
Intervention description(s): 1RM test performed in 5 different tools (Elastic Band, Pulley, halter, digital dynamometer and isokinetic dynamometer); Test performed until individual exhaustion in 5 different tools (Elastic Band, Pulley, halter and isokinetic dynamometer)
Observational model: Other
Time perspective: Prospective
Sampling method: Non-Probability Sample
Study population: 
        The sample is composed of apparently healthy young men, of both genders, between 13 and 30
        years old.