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Completed

NCT Number: NCT06763107

Validation and Inverse Analysis of The Athletic Shoulder Test (ASH).

To validate both the Athletic Shoulder (ASH) test, conducted on rugby players, and its inverse, the Inverse Athletic Shoulder (IASH) test, for swimmers. This involves assessing the strength relationship between shoulder flexion and extension at three different adduction angles (180º, 135º, 90º) to identify potential injuries associated with these imbalances.

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Key information

Conditions

Shoulder Pain Arthralgia Joint Diseases Musculoskeletal Diseases Neurologic Manifestations Pain Pathological Conditions, Signs and Symptoms Signs and Symptoms Sports Physical Therapy

Age range

14 year–18 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Pablo

Pontevedra, 36004, Spain

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • High-performance swimmers.
  • Aged between 14 and 18 years.
  • No acute injuries in the cervical or scapular region.
  • Ability to perform the ASH and IASH tests without compensatory movements.

Exclusion criteria

  • Acute injuries in the cervical or scapular region.
  • Inability to maintain proper positioning during the tests due to lack of adequate mobility or strength.
  • Refusal to sign informed consent (or legal guardian's consent for minors).

Treatment and study plan

Athletic Shoulder (ASH) and Inverse Athletic Shoulder (IASH) Tests

Procedure

Participants perform the Athletic Shoulder (ASH) test and Inverse Athletic Shoulder (IASH) test to measure maximal isometric shoulder strength in three positions (180º, 135º, 90º) during two separate sessions. Data is used to assess test reliability and validity for high-performance swimmers.

Primary outcomes

  1. Intraclass Correlation Coefficient (ICC) for ASH Test

    Time frame: Measured at two time points: baseline (Day 0) and follow-up (Day 2).

    Assessment of between-day reliability of the ASH test using intraclass correlation coefficients (ICC) for shoulder extension at three adduction angles (180º, 135º, 90º).

  2. Intraclass Correlation Coefficient (ICC) for IASH Test

    Time frame: Measured at two time points: baseline (Day 0) and follow-up (Day 2).

    Assessment of between-day reliability of the IASH test using intraclass correlation coefficients (ICC) for shoulder flexion at three adduction angles (180º, 135º, 90º).

  3. Coefficient of Variation (CV) for ASH and IASH Tests

    Time frame: Measured at two time points: baseline (Day 0) and follow-up (Day 2).

    Analysis of the coefficient of variation (CV) to evaluate data dispersion and consistency for both ASH and IASH tests.

  4. Minimum Detectable Change (MDC) for ASH and IASH Tests

    Time frame: Measured at two time points: baseline (Day 0) and follow-up (Day 2).

    Calculation of the minimum detectable change (MDC) to identify the smallest significant change in performance beyond measurement error for both ASH and IASH tests.

  5. Force Ratios Between ASH and IASH Tests

    Time frame: Measured at two time points: baseline (Day 0) and follow-up (Day 2).

    Evaluation of the agonist-antagonist strength ratios between ASH (extension) and IASH (flexion) tests across three adduction angles (180º, 135º, 90º).

  6. Comparison of Shoulder Strength Between Preferred and Non-Preferred Breathing Sides

    Time frame: Measured at two time points: baseline (Day 0) and follow-up (Day 2).

    Analysis of differences in isometric shoulder strength between the preferred and non-preferred breathing sides in ASH and IASH tests across three adduction angles.

  7. Evaluation of Test Fatigue and Its Impact on Reliability

    Time frame: Measured at two time points: baseline (Day 0) and follow-up (Day 2).

    Assessment of fatigue effects during ASH and IASH tests, considering the 20-second rest period and total number of efforts (36 per participant), and their potential impact on test reliability and strength measurements.

Sponsors and collaborators

Lead sponsor

University of Vigo

Other

Registry information

Official study title

Validation and Inverse Analysis of The Athletic Shoulder Test (ASH): Reliability of a Novel Upper Body Isometric Strength Test

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Jan 8, 2025
Registry last updated
Mar 28, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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