Evaluation of a compressed program for shoulder external rotation strength in handball
| ISRCTN | ISRCTN19694168 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN19694168 |
| ClinicalTrials.gov (NCT) | Nil known |
| Clinical Trials Information System (CTIS) | Nil known |
| Protocol serial number | Nil known |
| Sponsor | Oslo Sports Trauma Research Center, Norwegian School of Sports Sciences |
| Funder | The Oslo Sports Trauma Research Center has been established at the Norwegian School of Sport Sciences through generous grants from the Royal Norwegian Ministry of Culture, the South-Eastern Norway Regional Health Authority, the International Olympic Committee, the Norwegian Olympic Committee & Confederation of Sport, and Norsk Tipping AS |
- Submission date
- 17/09/2019
- Registration date
- 18/09/2019
- Last edited
- 13/08/2021
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Other
Plain English summary of protocol
Background and study aims
Many handball players have shoulder pain while playing handball. The throwing shoulder is vulnerable for injuries due to repetitive throwing and tackles. A recent study demonstrated that it is possible to reduce the problem by more than 25%. Despite this reduction in shoulder problems, less than one-third of the coaches and players would continue using the whole program the next season, because 'the program was too time-consuming'. Shoulder external rotation weakness is assumed to be a risk factor for shoulder injuries in handball. Therefore, the compressed program to increase external rotation strength was developed. The aim of this study is to examine the effect of the new, compressed shoulder external strength program in youth handball.
Who can participate?
Handball players aged 16 to 18 who play in clubs located in or close to Oslo
What does the study involve?
Six female and male youth 16-18 handball teams will be invited to participate in this study. The researchers will randomly allocate within each team to one exercise group and one control group. The exercise program will be implemented after regular handball training three times a week for eight weeks in the intervention group. The program consists of two shoulder external rotation strength exercises with variations and progressions, aimed to increase shoulder external rotation strength. One dedicated physiotherapist will deliver and supervise the program in the teams once or twice a week. The program will take about ten minutes to complete. Both groups will continue doing their regular training.
What are the possible benefits and risks of participating?
Increasing shoulder external rotation strength, which is a risk factor for shoulder injuries in handball, 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?
Oslo Sports Trauma Research Center / Norwegian School of Sport Science (Norway)
When is the study starting and how long is it expected to run for?
January 2019 to December 2020
Who is funding the study?
The Oslo Sports Trauma Research Center has been established at the Norwegian School of Sport Sciences through generous grants from the Royal Norwegian Ministry of Culture, the South-Eastern Norway Regional Health Authority, the International Olympic Committee, the Norwegian Olympic Committee & Confederation of Sport, and Norsk Tipping AS
Who is the main contact?
Mrs Hilde Fredriksen
hilde.fredriksen@nih.no
Contact information
Scientific
Kikkutveien 4b
Oslo
0491
Norway
 ORCID ID |
0000-0002-5158-7716 |
|---|---|
| Phone | +47 (0)99709997 |
| hilde.fredriksen@nih.no |
Study information
| Primary study design | Interventional |
|---|---|
| Study design | Randomized controlled trial |
| Secondary study design | Randomised controlled trial |
| Study type | Participant information sheet |
| Scientific title | Evaluation of a compressed program for shoulder external rotation strength in handball. A randomized controlled study among adolescent handball players |
| Study objectives | The aim of this study is to examine the effect of a new, compressed shoulder ER strength program in handball. |
| Ethics approval(s) | Approved 17/09/2019, Norwegian regional committee for medical and health research ethics, South East region (REK sør-øst, Pb 1130 Blindern, 0318 Oslo, Norway; Email: rek-sorost@medisin.uio.no), ref: 2019/1301/REK sør-øst |
| Health condition(s) or problem(s) studied | Shoulder strength training in healthy adolescent handball players |
| Intervention | Six female and male youth 16-18 handball teams will be invited to participate in this study. The researchers will conduct single randomization within each team to one exercise group and one control group. The exercise program will be implemented after regular handball training three times a week for eight weeks in the intervention group. The program consists of two shoulder external rotation (ER) strength exercises with variations and progressions, aimed to increase shoulder ER strength. One dedicated physiotherapist will deliver and supervise the program in the teams once or twice a week. The program will take about ten minutes to complete. Both groups will continue doing their regular training. |
| Intervention type | Other |
| Primary outcome measure(s) |
Shoulder external rotation strength is measured using a handheld dynamometer (MicroFET, Hoggan Health Industries, Salt Lake City, Utah, USA) at baseline and after 8 weeks of intervention |
| Key secondary outcome measure(s) |
Shoulder internal rotation range of motion is measured using a digital goniometer (Easyangle, Meloq AB, Stockholm, Sweden) at baseline and after 8 weeks of intervention |
| Completion date | 31/12/2019 |
Eligibility
| Participant type(s) | Healthy volunteer |
|---|---|
| Age group | Other |
| Sex | All |
| Target sample size at registration | 72 |
| Total final enrolment | 92 |
| Key inclusion criteria | 1. Handball players 2. Aged 16 to 18 years 3. Play handball in clubs located in or close to Oslo |
| Key exclusion criteria | Teams who participated in a similar study last year |
| Date of first enrolment | 23/09/2019 |
| Date of final enrolment | 03/10/2019 |
Locations
Countries of recruitment
- Norway
Study participating centre
Oslo
0806
Norway
Results and Publications
| Individual participant data (IPD) Intention to share | Yes |
|---|---|
| IPD sharing plan summary | Available on request |
| IPD sharing plan | The datasets generated during and/or analysed during the current study are/will be available upon request from Hilde Fredriksen (hilde.fredriksen@nih.no). De-identified raw data will be available from the date the article is published. The data will be available for meta-analyses by researchers doing the same type of studies, looking at shoulder strength in athletes. |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Results article | 01/04/2021 | 13/08/2021 | Yes | No | |
| Participant information sheet | Participant information sheet | 11/11/2025 | 11/11/2025 | No | Yes |
| Protocol file | 18/09/2019 | 18/09/2019 | No | No | |
| Protocol file | 29/06/2020 | 29/06/2020 | No | No |
Additional files
- ISRCTN19694168_PROTOCOL_18Sep19.docx
- Uploaded 18/09/2019
- ISRCTN19694168_PROTOCOL_29Jun20.docx
- Uploaded 29/06/2020
Editorial Notes
13/08/2021: Internal review.
19/04/2021: Publication reference added.
16/03/2021: The intention to publish date has been changed from 01/09/2020 to 30/04/2021.
29/06/2020: Uploaded protocol 29 June 2020 (not peer reviewed).
06/03/2020: Internal review.
04/11/2019: The following changes have been made:
1. The recruitment end date has been changed from 13/10/2019 to 03/10/2019.
2. The final enrolment number was added.
3. The overall trial end date was changed from 31/12/2020 to 31/12/2019.
08/10/2019: Trial's existence confirmed by ethics committee.
18/09/2019: Uploaded protocol 18 September 2019 (not peer reviewed).
