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Acute Hamstring Strains in Danish Elite Soccer - Prevention and Rehabilitation

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified September 2007 by Amager Hospital.
Recruitment status was:  Enrolling by invitation
Information provided by:
Amager Hospital Identifier:
First received: November 9, 2007
Last updated: NA
Last verified: September 2007
History: No changes posted

A common soft tissue injury in sports involving sprinting and jumping is the hamstring strain.

Not much evidence-based research has been carried out on prevention of hamstring strains.

Most studies suggest that hamstring strains occur during the later part of the swing phase when the player is sprinting. In this phase the hamstring muscles are working to decelerate knee extension - that is, the muscle develops tension while lengthening. This means that the muscles change from functioning eccentrically to concentrically. We hypothesize that it is during this rapid change from eccentric to concentric function that the muscles are most vulnerable to injuries, and that the injuries can be prevented by increasing the eccentric muscle strength in the hamstring.

This randomized clinical trial will examine the effect of a 10-week preseason strength-training program in Danish elite soccer. The strength-training program focuses on eccentric hamstring training.

60 elite teams (1200 soccer players) will be cluster-randomized to either ordinary training or ordinary training combined with eccentric hamstring strength training. The training group will start the training program in the pre-season (10 weeks) and continue the training once a week during the following season.

Suspected hamstrings strains during the season will be examined within 3 days using ultrasound. Ultrasound verified hamstring strains will be registered, and players will start a standardized rehabilitation program.

Condition Intervention
Strains Other: Training

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Acute Hamstring Strains in Danish Elite Soccer - Prevention and Rehabilitation

Resource links provided by NLM:

Further study details as provided by Amager Hospital:

Primary Outcome Measures:
  • Number of acute hamstring strains [ Time Frame: one soccer season ]

Secondary Outcome Measures:
  • Number of ACL-injuries [ Time Frame: One soccer season ]

Estimated Enrollment: 1000
Study Start Date: January 2008
Estimated Study Completion Date: March 2009
Intervention Details:
    Other: Training
    10-week eccentric hamstring muscle training

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Male soccer player in one of the top 4 divisions i Denmark in the 2007/08 season
  • Minimum 18 years old at the time for inclusion

Exclusion Criteria:

  • Current hamstring strain at the time for inclusion
  • Under 18 years old
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00557050

Sponsors and Collaborators
Amager Hospital
Principal Investigator: Jesper Petersen, MD Department of Orthopaedic Surgery, Amager University Hospital, Denmark
  More Information

Publications: Identifier: NCT00557050     History of Changes
Other Study ID Numbers: H-A-2007-0062
Study First Received: November 9, 2007
Last Updated: November 9, 2007

Keywords provided by Amager Hospital:

Additional relevant MeSH terms:
Sprains and Strains
Wounds and Injuries processed this record on September 20, 2017