Shoulder Injury Prevention in Adolescent Handball Players Based on Scandinavian Protocols (HBSP-HU-25)

Semmelweis University

Status: Completed

Conditions: Shoulder Injuries; Injury Prevention

Treatments: Behavioral: Swedish Shoulder Control Programme; Behavioral: Norwegian OSTRC Shoulder Injury Prevention Programme

Study type: Interventional

Funder types: Other

Identifiers

NCT07146243

HBSP-HU-CRCT25

Details and patient eligibility

About

This cluster-randomised controlled trial will evaluate the effects of two internationally recognised shoulder injury prevention programmes - the Swedish Shoulder Control programme and the Norwegian Oslo Sports Trauma Research Center Shoulder Injury Prevention programme - on shoulder function, scapular control, and injury incidence in Hungarian adolescent handball players (U16-U20). Six elite-level teams (3 male, 3 female) from a single handball academy will be randomised by cluster into two intervention arms for an 18-week intervention period. Primary outcomes are changes in objective shoulder function tests; secondary outcomes include self-reported function and weekly injury monitoring.

Full description

This study is a two-armed cluster-randomised controlled trial designed to assess the effects of two established, evidence-based shoulder injury prevention programmes in Hungarian adolescent elite handball players. Both programmes have previously demonstrated effectiveness in reducing the incidence of shoulder injuries in overhead athletes; however, it remains unclear how they compare in their ability to improve specific objective outcomes such as shoulder stability, proprioception, strength, and scapular control. The trial will be conducted at a single elite handball academy, including six teams (three male, three female) in the U16-U20 age categories. Teams will be randomised at the cluster level (team) into one of two intervention arms, each performing one of the two prevention programmes for the entire competitive half-season (18 weeks).

Unlike most injury prevention studies in adolescent athletes, this trial combines weekly self-reported monitoring of shoulder health (OSTRC-O Shoulder Module) with a comprehensive battery of objective, instrumented assessments of shoulder function, scapular control, strength, and proprioception. This dual approach allows for a more precise evaluation of programme effectiveness, capturing both perceived and measurable physical changes.

This prevention trial forms part of a larger, ongoing research programme investigating shoulder function and return-to-sport readiness following shoulder injury in overhead athletes. The same battery of objective tests (scapular dyskinesis assessment, LSST, mLSST, CKCUEST, YBT-UQ, proprioception testing, isometric strength testing) used here is also applied in the broader project, allowing the present study to generate insights that directly inform both preventive strategies and post-injury rehabilitation protocols.

The findings from this trial are expected to inform refinements of existing shoulder injury prevention protocols, enhance compliance strategies, and support sport-specific adaptations for adolescent elite handball players and other overhead athletes.

Enrollment: 137 patients

Sex: All

Ages: 13 to 19 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Registered competitive handball players from the participating academy team (U16, U18, U20; male and female).
• Age between 13 and 19 years at baseline assessment.
• Currently participating in regular handball training and matches (minimum 3 training sessions per week).
• Member of a team assigned to the intervention for the full study period.
• Provided written informed consent (and parental consent for participants under 18 years).

Exclusion criteria

• Acute shoulder injury at baseline preventing training
• Shoulder surgery in last 6 months
• Contraindication to resistance training
• Concurrent enrolment in another interventional study targeting the shoulder/upper limb.
• Refusal of informed consent (and parental consent for participants <18 years).

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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137 participants in 2 patient groups

Swedish Shoulder Control Programme

Experimental group

Description:

Female U18, Male U16 and Male U20 perform the physiotherapy component of the Swedish Shoulder Control Programme, excluding the throwing block, as it is designed for the off-season and the programme is implemented during the competitive season. Sessions are supervised by two physiotherapists, performed twice per week for a total of 18 weeks, before training sessions, and last approximately 15 minutes each.

Treatment:

Behavioral: Swedish Shoulder Control Programme

Norwegian OSTRC Shoulder Injury Prevention Programme

Experimental group

Description:

Female U16, Female U20 and Male U18 perform the Norwegian Shoulder Injury Prevention Programme (OSTRC). This evidence-based programme includes warm-up and strengthening exercises targeting the shoulder complex, designed to reduce the risk of shoulder injuries. Sessions are supervised by two physiotherapists, performed twice per week for a total of 18 weeks, before training sessions, and last approximately 15 minutes each.

Treatment:

Behavioral: Norwegian OSTRC Shoulder Injury Prevention Programme