ISRCTN ISRCTN94413028
DOI https://doi.org/10.1186/ISRCTN94413028
Secondary identifying numbers 2022-04
Submission date
06/04/2022
Registration date
22/07/2022
Last edited
22/07/2022
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Musculoskeletal Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
Handball is associated with a high risk of knee injury that needs to be reduced. The purpose of this study is to show how an injury-prevention programme effectively reduces knee injury in adult and adolescent handball players.

Who can participate?
Any active handball player aged 14 years or older in any of the German-speaking handball leagues with at least one competitive match during the interventional season 2022-23

What does the study involve?
Teams register for the study and are allocated randomly in either the intervention arm or control arm. Players of the intervention group regularly participate in an injury-prevention programme for one season. Handball exposure and sustained injuries are documented for both groups on a regular basis.

What are the possible benefits and risks of participating?
Possible benefits of the intervention arm are the reduction of knee injury or reduction in prevalence/intensity of overuse knee injury symptoms. No risk are reported to date for neuromuscular injury prevention programmes.

Where is the study run from?
1. Dpt. of Orthopaedic Surgery, König-Ludwig-Haus, University Würzburg, Würzburg, Germany
2. Dpt. of Trauma, Hand, Plastic and Reconstructive Surgery, University Medical Center Wuerzburg, Germany

When is the study starting and how long is it expected to run for?
March 2019 to June 2023

Who is funding the study?
Bundesinstitut für Sportwissenschaft / German Federal Institute for Sports Sciences

Who is the main contact?
Dr Leonard Achenbach
leonardachenbach@gmail.com

Contact information

Dr Leonard Achenbach
Principal Investigator

Brettreichstraße 11
Würzburg
97074
Germany

ORCiD logoORCID ID 0000-0002-9053-0624
Phone +49 931803-0
Email l-achenbach.klh@uni-wuerzburg.de

Study information

Study designProspective cluster-randomised controlled trial
Primary study designInterventional
Secondary study designCluster randomised trial
Study setting(s)Community
Study typePrevention
Participant information sheet Not available in web format, please use the contact details to request a participant information sheet
Scientific titlePrevention of acute severe knee injury in handball: a cluster randomised controlled trial
Study objectivesThe purpose of this study is to show how an injury prevention programme specific for knee effectively reduces acute knee injury in handball players
Ethics approval(s)Approved 13/03/2019, Ethical committee of the University of Regensburg (D-93040 Regensburg, Germany; +49 (0)941 943 5370; ethikkommission@klinik.uni-regensburg.de), ref: 15-101-0137
Health condition(s) or problem(s) studiedMusculoskeletal knee injury
InterventionIntervention arm: teams are given a neuromuscular training programme. this should be implemented at least twice per week during the whole course of the season

Control arm: teams proceed with their normal training without any instructions

Total duration: season 2022/23 (July 2022 - May 2023)

Injuries of all participating teams/players are assessed on a regular basis (every six weeks) during the whole season by means of standardised injury questionnaires.

Stratified cluster randomisation is carried out and a 1:1 randomisation in both arms is scheduled. Stratification is based on sex (male/female), age (under-15/under-17/under-19/senior) and level of professionalism (league 1-3/4-6/7 or lower).
Intervention typeBehavioural
Primary outcome measureNumber of new acute severe knee injuries sustained per 1000 h of handball throughout the intervention season, such as intraarticular fracture, patella dislocation, rupture of the collateral or cruciate ligament, meniscus tear, cartilage injury or any injury resulting in absence from training session or match for more than 28 days. Measured by online questionnaires and personal contact of the study team with the handball teams.
Secondary outcome measures1. Injury mechanism of knee injuries (contact, indirect contact, non-contact) throughout the intervention season, measured by online questionnaires and personal contact of the study team with the handball teams
2. Prevalence of overuse knee injury throughout the intervention season, measured by online questionnaires and personal contact of the study team with the handball teams
Overall study start date13/03/2019
Completion date30/06/2023

Eligibility

Participant type(s)Other
Age groupMixed
SexBoth
Target number of participantsSample size was calculated based on the primary endpoint of incidence of acute severe injury to the knee in handball athletes within one season. The incidence of 0.33 per 1000h was based on the incidence reported in the recent literature. The study aimed to achieve a reduction to 0.04 per 1000h. To achieve this effect with a power of 80%, an estimated intraclass correlation coefficient of 0.10, and an average team size of 10 athletes with an error type 1 of maximum 5%, 30 teams per group and thus a total of 60 teams with n=662 athletes have to be included.
Key inclusion criteria1. Active male or female handball player in any of the German-speaking handball leagues with at least one competitive match during the interventional season 2022/23
2. Aged 14 years or older
Key exclusion criteria1. Inability to understand German
2. No signed consent
Date of first enrolment01/05/2022
Date of final enrolment30/05/2023

Locations

Countries of recruitment

  • Austria
  • Germany
  • Switzerland

Study participating centres

Dpt. of Trauma, Hand, Plastic and Reconstructive Surgery, University Medical Center Wuerzburg, Germany
Oberdürrbacher Straße 6
Würzburg
97080
Germany
König-Ludwig-Haus, Department of Orthopaedics
Brettreichstraße 11
Würzburg
97074
Germany

Sponsor information

University Medical Center Würzburg
Hospital/treatment centre

Brettreichstr. 6
Würzburg
97080
Germany

Phone +49 931201-0
Email fehske_k@ukw.de

Funders

Funder type

Government

Bundesinstitut für Sportwissenschaft
Government organisation / National government
Alternative name(s)
German Federal Institute of Sport Science, BISp
Location
Germany

Results and Publications

Intention to publish date30/05/2024
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryData sharing statement to be made available at a later date
Publication and dissemination planPlanned publication in a peer-reviewed journal.
IPD sharing planThe current data sharing plans for this study are unknown and will be available at a later date.

Editorial Notes

14/04/2022: Trial's existence confirmed by the ethical committee of the University of Regensburg.