Effect of Injury Prevention Exercises on Shoulder Muscle Endurance and Performance in Adolescent Swimmers

Effect of Localized and Comprehensive Injury Prevention Exercises on Performance, Stability, Upper Limb Function, and Rotator Cuff Muscle Endurance in Adolescent Swimmers

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

IRCT

Registry ID

IRCT20180521039762N3

Enrollment

Registered

2025-10-28

Start date

2025-04-11

Completion date

Unknown

Last updated

2025-12-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Shoulder injuries in adolescent swimmers. Shoulder lesions

Interventions

Intervention 1: Intervention Group 1 (Local Exercise Group): Participants performed stretching, activation, and strengthening exercises for the shoulder muscles. Each session lasted between 30 to 75 m

Eligibility

Sex/Gender

Male

Age

10 Years to 17 Years

Inclusion criteria

Inclusion criteria: Male gender Adolescent swimmers aged between 10 and 17 years Amateur participants Completion and signing of written informed consent form

Exclusion criteria

Exclusion criteria: Having any disease or injury History of surgery in the shoulder girdle region

Design outcomes

Primary

Measure	Time frame
Upper limb dynamic stability; Measured using the Y Balance Test, indicating control and coordination of hand and arm movements in multiple directions. Timepoint: Before the intervention and after the completion of the 8-week exercise intervention. Method of measurement: Measured using the Y Balance Test.;Rotator cuff muscle endurance; Measured using the repetitive external shoulder rotation test with dumbbells, indicating the ability of muscles to perform repeated activity. Timepoint: Before the intervention and after the completion of the 8-week exercise intervention. Method of measurement: Measured using the repetitive external shoulder rotation test with dumbbells.;Front crawl performance; Measured using the 50-meter front crawl time, number of strokes, and stroke-to-time ratio, indicating overall swimming performance. Timepoint: Before the intervention and after the completion of the 8-week exercise intervention. Method of measurement: Measured using 50-meter front crawl time, number of strokes, and stroke-to-time ratio.;Upper limb stability in the closed kinetic chain; Measured using the Davis test, indicating the ability to control upper limb movements in stable positions. Timepoint: Before the intervention and after the completion of the 8-week exercise intervention. Method of measurement: Measured using the Davis test.	—

Measure

Time frame

Upper limb dynamic stability; Measured using the Y Balance Test, indicating control and coordination of hand and arm movements in multiple directions. Timepoint: Before the intervention and after the completion of the 8-week exercise intervention. Method of measurement: Measured using the Y Balance Test.;Rotator cuff muscle endurance; Measured using the repetitive external shoulder rotation test with dumbbells, indicating the ability of muscles to perform repeated activity. Timepoint: Before the intervention and after the completion of the 8-week exercise intervention. Method of measurement: Measured using the repetitive external shoulder rotation test with dumbbells.;Front crawl performance; Measured using the 50-meter front crawl time, number of strokes, and stroke-to-time ratio, indicating overall swimming performance. Timepoint: Before the intervention and after the completion of the 8-week exercise intervention. Method of measurement: Measured using 50-meter front crawl time, number of strokes, and stroke-to-time ratio.;Upper limb stability in the closed kinetic chain; Measured using the Davis test, indicating the ability to control upper limb movements in stable positions. Timepoint: Before the intervention and after the completion of the 8-week exercise intervention. Method of measurement: Measured using the Davis test.

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Countries

Iran (Islamic Republic of)

Contacts

Public ContactAfshin Moghadasi

Payame Noor University

moghadasi@pnu.ac.ir+98 21 2332 0000

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026