Investigating the effect of a shoulder injury prevention program in handball on external rotation strength and internal rotational range of motion

ISRCTN ISRCTN13272376
DOI https://doi.org/10.1186/ISRCTN13272376
Secondary identifying numbers N/A
Submission date
30/05/2018
Registration date
05/06/2018
Last edited
13/01/2021
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Musculoskeletal Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aims
Many handball players have shoulder pain while playing handball. A recent study demonstrated that it is possible to reduce the problem by over a quaarter. Despite this reduction in shoulder problems, only 3 in 10 of the coaches would continue using the whole program the next season, because 'the program was too time-consuming'. To be able to reduce the number of exercises and make the program more efficient, we need to know how the exercises reduce shoulder injuries. Shoulder external rotation weakness and limited internal rotation are considered to be the most important risk factors for shoulder problems in handball. The aim of our study is to test if the prevention program affects these two risk factors.

Who can participate?
Handball players aged 16 to 18 years from clubs located in or close to Oslo will be invited to participate in this study.

What does the study involve?
Half of the participants will do a shoulder prevention program designed for handball over an 18-week period, while the other half will do their regular handball warm-up and training. All the participants will be tested for shoulder strength and range of motion before, during the training period (after 6 and 12 weeks) and after the training period (18 weeks).

What are the possible benefits and risks of participating?
Reduction of shoulder problems is a possible benefit in the intervention group. (All the participants will be offered the training program after the intervention is finished). There are no known risks of participating.

Where is the study run from?
The study is being run by the Oslo Sports Trauma Research Center in Norway.

When is the study starting and how long is it expected to run for?
August/September 2018 to February 2018.

Who is funding the study?
Oslo Sports Trauma Research Center

Who is the main contact?
1. Hilde Fredriksen, hilde.fredriksen@nih.no
2. Grethe Myklebust, grethe.myklebust@nih.no

Contact information

Mrs Hilde Fredriksen
Scientific

Norwegian School of Sport Sciences
Department of Sports Medicine
Oslo Sports Trauma Research Center
P.O.Box 4014 Ullevål Stadion
Oslo
0491
Norway

Phone +4799709997
Email hilde.fredriksen@nih.no

Study information

Study designRandomized controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Other
Study typePrevention
Participant information sheet Only available in Norwegian. Please use the contact details below to request a participant information sheet.
Scientific titleInvestigating the effect of Oslo Sports Trauma Research Center (OSTRC) shoulder injury prevention program in handball on key risk factors, external rotation strength and internal rotational range of motion
Study objectivesThe OSTRC shoulder injury prevention program in handball affects the risk factorsfor shoulder injury: external rotation (ER) strength and internal rotation (IR) range of motion (ROM).
Ethics approval(s)Norwegian regional committee for medical and health research ethics, South East region, 14/05/2018, 2018/412/REK sør-øst
Health condition(s) or problem(s) studiedShoulder injury prevention training in healthy handball players
InterventionFour handball teams, players aged 16 to 18 years will participate. The teams will be randomized, with stratification for gender, to one exercise group and one control group.
The intervention group will perform the Oslo Sports Trauma Research Center (OSTRC) shoulder prevention program in handball over an 18-week period as described in the original study. The prevention program is a 10-minute warm-up program, carried out three times per week as a part of the regular handball warm-up, and consists of five exercises with different variations and levels. The exercises are intended to increase the muscle strength in shoulder external rotation (ER), to improve neuromuscular control around the scapula and improve shoulder internal rotation (IR) range of movement (ROM). Exercises to improve kinetic chain activation and thoracic mobility were also added.
The control group will continue doing their regular handball warm-up.
Intervention typeBehavioural
Primary outcome measure1. Shoulder isometric external rotation strength (measured with a handheld dynamometer [HHD]) after 18 weeks
2. Internal rotation range of motion after 18 weeks
Secondary outcome measures1. Isometric ER strength by HHD at weeks 6 and 12
2. IR ROM at weeks 6 and 12
3. Isometric muscular strength by HHD in IR at weeks 6, 12 and 18
4. ER/IR isometric ratio at weeks 6, 12 and 18
5. Isokinetic ER and IR, concentric at 60 and 300°/sec and eccentric at 60°/sec, both absolute values and the functional deceleration ratio (FDR) ERecc/IRcon at 60°/sec at 18 weeks
6. IR at weeks 6, 12 and 18
7. Total rotational ROM at weeks 6, 12 and 18
Overall study start date01/01/2018
Completion date31/12/2019

Eligibility

Participant type(s)Healthy volunteer
Age groupMixed
SexBoth
Target number of participants52
Total final enrolment57
Key inclusion criteria1. Handball players
2. Aged 16 to 18 years
3. Play handball in clubs located in or close to Oslo
Key exclusion criteria1. Player in a club that already implements the shoulder injury prevention program
2. Handball clubs with less than 12 players
Date of first enrolment01/08/2018
Date of final enrolment12/09/2018

Locations

Countries of recruitment

  • Norway

Study participating centre

Oslo Sports Trauma Research Center/ Norwegian School of Sport Science
Sognsveien 220
Oslo
0806
Norway

Sponsor information

Oslo Sports Trauma Research Center
Research organisation

P.O.Box 4014 Ullevål Stadion
Oslo
0806
Norway

Phone +47 23262367
Email ostrc@nih.no
Website http://www.klokeavskade.no/en/
ROR logo "ROR" https://ror.org/018ct3570

Funders

Funder type

Not defined

Oslo Sports Trauma Research Center

No information available

Results and Publications

Intention to publish date31/12/2020
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
Publication and dissemination planWe plan to publish the results in 2019-2020
IPD sharing planThe datasets generated during and/or analysed during the current study will be available upon request from Hilde Fredriksen, hilde.fredriksen@nih.no. Raw data of strength and range of motion will be shared. The data will become available after publication of the study.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/08/2020 13/01/2021 Yes No

Editorial Notes

13/01/2021: The following changes were made to the trial record:
1. Publication reference added.
2. The total final enrolment was added.
21/12/2018: The recruitment end date was changed from 01/09/2018 to 12/09/2018.