Effects of a forefoot-oriented exercise intervention on jumping performance and injury incidence in volleyball players – A randomized controlled intervention study.
Organizational Data
- DRKS-ID:
- DRKS00011927
- Recruitment Status:
- Recruiting complete, study complete
- Date of registration in DRKS:
- 2017-03-23
- Last update in DRKS:
- 2023-01-26
- Registration type:
- Prospective
Acronym/abbreviation of the study
No Entry
URL of the study
No Entry
Brief summary in lay language
The aim of this study is to examine the effects of a specific forefoot-exercise training program on jump performance and incidence of injuries in the case of volleyball players. In running, there are indications which show that increased forefoot-running can have positive effects on the performance and the prevention of injuries. It is questionable whether such results can also be applied to game sports, which involve increased forefoot loading. Data from this study can provide clinical and training-specific indications for optimal training. For this, volleyball players are randomly assigned to two different groups. One group completed its usual warm-up program for a 12-week duration (control group). The other group receives a specific 15-minute warm-up program with special forefoot-oriented exercises (training group). This training program is then part of the usual warm-up routine for 12 weeks before each volleyball training session. Before and after the 12 weeks the jump force is detected by means of a force measuring plate. After a further 3 months, the number of injuries in the 6-month period is recorded in both groups. The development of the jump force and the frequency of injuries are then compared between the two groups.
Brief summary in scientific language
Volleyball is one of the most injurious sports. Most injuries in volleyball are related to the lower extremity, with nearly half of all acute injuries being ankle joint distortions (International Federation of Volleyball FIVB, 2016). Verhagen et al. (2004) observed the injury incidence of Dutch volleyball players during a whole season. He also observed that 41% of all acute injuries were localized in volleyball at the ankle. Furthermore, it was found that 75% of the players with an ankle injury had previously suffered ankle joint distortion. Thus, he stressed the need to avoid a first injury in the ankle. Bahr & Bahr (1997) reported similar incidents of injury incidence. The aim of this study is to investigate the effects of a specific forefoot exercise training program on the jump performance and injury incidence of volleyball players. Results from this study may provide clinical and training-specific indications for optimal training. Due to the similar motor requirements, transfer to other related game sports, such as handball and basketball, seems possible. Basically, all clubs and players are interested in optimizing sport-specific performance and reducing the frequency of injuries.
Health condition or problem studied
- Free text:
- Healthy subjects
- Healthy volunteers:
- Yes
Interventions, Observational Groups
- Arm 1:
- Intervention: Volleyball players complete their classic warm-up routine with muscular and cardiorespiratory warm-up before their sports-specific training (control). Duration of a training session: 20min, frequency: 2-4 times a week - depending on the level of playing and the corresponding amount of training, intervention: 12 weeks).
- Arm 2:
- Intervention: Volleyball players complete their classic warm-up routine with muscular and cardiorespiratory warm-up before their sports-specific training (control). Duration of a training session: 20min, frequency: 2-4 times a week - depending on the level of playing and the corresponding amount of training, intervention: 12 weeks). PLUS: The classic warm-up routine is expanded by forefoot oriented exercises (running, jumping) (Intervention Group)
Endpoints
- Primary outcome:
- Jump performance operationalized with the maximum jump height [cm] (Squat Jump and Counter Movement Jump). Measurement at Baseline and after 12-week training intervention.
- Secondary outcome:
- Injury incidence is operationalized on the basis of the injury registration form (International Volleyball Federation FIVB). Survey from baseline continuously until 12 weeks after intervention end
Study Design
- Purpose:
- Prevention
- Allocation:
- Randomized controlled study
- Control:
-
- Active control (effective treatment of control group)
- Phase:
- N/A
- Study type:
- Interventional
- Mechanism of allocation concealment:
- No Entry
- Blinding:
- No
- Assignment:
- Parallel
- Sequence generation:
- No Entry
- Who is blinded:
- No Entry
Recruitment
- Recruitment Status:
- Recruiting complete, study complete
- Reason if recruiting stopped or withdrawn:
- No Entry
Recruitment Locations
- Recruitment countries:
-
- Belgium
- Switzerland
- Number of study centers:
- Multicenter study
- Recruitment location(s):
-
- Other Movement Laboratory Bern University of Applied Sciences Bern
- Other University of Antwerp, Rehabilitation Sciences and Physiotherapy Antwerpen
Recruitment period and number of participants
- Planned study start date:
- 2017-09-01
- Actual study start date:
- 2017-10-01
- Planned study completion date:
- No Entry
- Actual Study Completion Date:
- 2018-07-01
- Target Sample Size:
- 128
- Final Sample Size:
- 158
Inclusion Criteria
- Sex:
- All
- Minimum Age:
- 16 Years
- Maximum Age:
- 40 Years
- Additional Inclusion Criteria:
- • Volleyball players • Nationalliga B, 1 league or 2. league Switzerland • Age 16 + • German speaking • Minimum of 2 training sessions per week • Signed written consent • Painlessness
Exclusion Criteria
• Anamnestic clarified acute musculoskeletal symptoms / complaints on the lower limb or the back • Anamnesically clarified foot deformities or known pathologies of the lower limb • Acute or chronic infections • Pain when walking / jumping;
Addresses
Primary Sponsor
- Address:
- Bern University of Applied Sciences, Health, PhysiotherapyPhD Heiner BaurMurtenstrasse 10CH-3008 BernSwitzerland
- Telephone:
- 0041318484515
- Fax:
- No Entry
- Contact per E-Mail:
- Contact per E-Mail
- URL:
- No Entry
- Investigator Sponsored/Initiated Trial (IST/IIT):
- Yes
Contact for Scientific Queries
- Address:
- Bern University of Applied Sciences, Health, PhysiotherapyPhD Heiner BaurMurtenstrasse 10CH-3008 BernSwitzerland
- Telephone:
- 0041318484515
- Fax:
- No Entry
- Contact per E-Mail:
- Contact per E-Mail
- URL:
- No Entry
Contact for Public Queries
- Address:
- Bern University of Applied Sciences, Health, PhysiotherapyPhD Heiner BaurMurtenstrasse 10CH-3008 BernSwitzerland
- Telephone:
- 0041318484515
- Fax:
- No Entry
- Contact per E-Mail:
- Contact per E-Mail
- URL:
- No Entry
Principal Investigator
- Address:
- Bern University of Applied Sciences, Health, PhysiotherapyPhD Heiner BaurMurtenstrasse 10CH-3008 BernSwitzerland
- Telephone:
- 0041318484515
- Fax:
- No Entry
- Contact per E-Mail:
- Contact per E-Mail
- URL:
- No Entry
Sources of Monetary or Material Support
Institutional budget, no external funding (budget of sponsor/PI)
- Address:
- Bern University of Applied Sciences, Health, PhysiotherapyMurtenstrasse 10CH-3008 BernSwitzerland
- Telephone:
- 0041318484515
- Fax:
- No Entry
- Contact per E-Mail:
- Contact per E-Mail
- URL:
- No Entry
Ethics Committee
Address Ethics Committee
- Address:
- Kantonale Ethikkommission Bern (KEK)Generalsekretärin: Dr. sc. nat. Dorothy Pfiffner [Kantonale Ethikkommission Bern (KEK) www.kek-bern.ch ]Murtenstrasse 31CH-3010 BernSwitzerland
- Telephone:
- 031 632 86 33
- Fax:
- 031 632 86 39
- Contact per E-Mail:
- Contact per E-Mail
- URL:
- http://www.kek-bern.ch/
Vote of leading Ethics Committee
- Vote of leading Ethics Committee
- Date of ethics committee application:
- 2016-06-20
- Ethics committee number:
- Basec-Nr.: 2016-01136
- Vote of the Ethics Committee:
- Approved
- Date of the vote:
- 2016-08-25
Further identification numbers
- Other primary registry ID:
- No Entry
- EudraCT Number:
- No Entry
IPD - Individual Participant Data
- Do you plan to make participant-related data (IPD) available to other researchers in an anonymized form?:
- No
- IPD Sharing Plan:
- No Entry
Study protocol and other study documents
- Study protocols:
- Studienprotokoll
- Study abstract:
- Abstract
- Other study documents:
- No Entry
- Background literature:
- No Entry
- Related DRKS studies:
- No Entry
Publication of study results
- Planned publication:
- No Entry
- Publikationen/Studienergebnisse:
- Frankinouille, R., Baur, H., Vissers, D., Taeymans, J., Gielen, J., & Schulz, C. (2020). Effects of a forefoot-oriented exercise intervention on jumping performance in volleyball players: a randomized controlled intervention study. Gazzetta medica italiana e archivio per le scienze mediche: rivista mensile di sperimentazione, farmacologia clinica e terapia/Medico-Legal Society.-Torino, 179(4), 282-289.
- Date of first publication of study results:
- 2020-04-01
- DRKS entry published for the first time with results:
- 2023-01-26
Basic reporting
- Basic Reporting / Results tables:
- No Entry
- Brief summary of results:
- No Entry