Repeated-sprint AbilityNCT02674919
Nordic Hamstring and Repeated-sprint Ability in Football (Soccer) Players
A study testing Nordic Hamstring in people with Repeated-sprint Ability, run by Hvidovre University Hospital at 1 site in Denmark.
Trial summary
The purpose of the study is to investigate the efficacy of a 10-week intervention, using the Nordic Hamstring exercise, on repeated-sprint ability in male sub-elite football players. The primary outcome measure is total sprint time during 4x6 sprint of 10 meters measured using dual-beam photoelectric cells. Read more about this study
- Who is it for?
- Ages 17 to 35 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Repeated-sprint Ability
- What is being tested?
- Nordic Hamstring
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 35 participants
- Where
- 1 siteDenmark
- Study dates
- Feb 2016to Jun 2016
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 17 to 35 years
- Men only
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Sub-elite Danish football player
- Age 17-35.
- Able to participate fully in competitive football activities at the time of testing
Who cannot join
- Hamstring pain resulting in loss of training and matches 2 months prior to study initiation.
- Specific systematic strength training of the hamstring muscles (>1/week) in the preceding 2 months before study initiation.
- Specific systematic sprint training (>1/week) in the preceding 2 months before study initiation.
- Longstanding injury (>6 weeks) in the lower extremities in the preceding 6 months to study initiation.
Trial locations and contacts
1 site in 1 country.
Denmark1 site
Both the intervention and testing included in protocol will be conducted in the facilities of the included football clubs in Copenhagen, Denmark.
Copenhagen
About this study
Official title: The Efficacy of a 10-week Intervention, Using the Nordic Hamstring Exercise, on Repeated-sprint Ability in Football (Soccer) Players - a Randomized Controlled Trial
The purpose of the study is to investigate the efficacy of a 10-week intervention, using the Nordic Hamstring exercise, on repeated-sprint ability in male sub-elite football players. The primary outcome measure is total sprint time during 4x6 sprint of 10 meters measured using dual-beam photoelectric cells. Additionally, eccentric knee flexor strength is measured using the Nordbord hamstring strength measure. The hypothesis is that strength training of the knee flexor muscles elicited by the Nordic Hamstring exercise will result in enhanced repetitive sprint-ability expressed as a decrease in total sprint time. Furthermore, baseline data is used to assess to correlation between eccentric hamstring strength and active hamstring flexibility AND sprint performance.
- Conditions
- Repeated-sprint Ability
- Being tested
- Nordic Hamstring, Control
- Keywords
- Repeated-sprint ability, Nordic Hamstring exercise, Eccentric hamstring muscle strength
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Nordic HamstringOther
Also called Hamstring lowers, Nordic lowers, Hamstring Curl
ControlOther
| Study group | Role | What they receive |
|---|---|---|
| Nordic Hamstring | Experimental | The Nordic Hamstring group performs a progressive strengthening program (Mjolsnes et al., 2004) comprising of the Nordic Hamstring exercise during a period of 10 weeks. The training load increases from one session per week in week 1 to 3 sessions per week in week 3-10. Number of sets and repetitions progressively increase from 2 to 3 and 5 to 12, respectively. The exercise program is performed in the end of a regular football training session. Receives: Other: Nordic Hamstring |
| Control | Other | The control group are asked not to perform the exercise or any other specific strength training for the hamstring muscles and to continue to play football as usual. Receives: Other: Control |
What is being measured
The primary outcome is the main question the study is designed to answer.
Total sprint time measured during 4x6 sprints of 10 meters. The sprints are performed every 15s and the sets are separated by 3 minutes of rest.
Measured: Measured prior to and after the intervention period (at week 0 & 10)
Secondary outcomes (5)
Single sprint times (best sprint time, sprint time during last sprint).
Measured: Measured prior to and after the intervention period (at week 0 & 10)
Maximal eccentric knee flexor strength measured using Nordbord device
Measured: Measured prior to and after the intervention period (at week 0 & 10)
Eccentric knee flexor strength endurance measured during 12 repetitions of the Nordic Hamstring exercise using Nordbord device.
Measured: Measured prior to and after the intervention period (at week 0 & 10)
Active range of motion of hamstring muscles measured using inclinometer.
Measured: Measured prior to and after the intervention period (at week 0 & 10)
Correlation between eccentric hamstring strength and active hamstring flexibility AND sprint performance.
Measured: Measured prior to the intervention (at week 0)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Feb 2016 (estimated)
- Study startFeb 2016
- Primary completionJun 2016
- Study completionJun 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Repeated-sprint AbilityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 35 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hvidovre University Hospital
- Sponsor type
- University, hospital or other
- Collaborators
- University of Southern Denmark, Aspetar
- Responsible party
- Principal investigator, Lasse Ishøi, Hvidovre University Hospital
- Investigators
- Lasse Ishøi, Principal investigator, Hvidovre University Hospital. University of Southern DenmarkPer Hölmich, Study chair, Hvidovre University Hospital. AspetarPer Aagaard, Study chair, University of Southern DenmarkKristian Thorborg, Study chair, Hvidovre University HospitalThomas Bandholm, Study chair, Hvidovre University HospitalAndreas Serner, Study director, Hvidovre University Hospital. Aspetar
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02674919
- Sponsor's protocol ID
- NHE-2016-LI
- Status last verified
- Jun 2018
- First submitted
- 2 Feb 2016
- Last updated
- 14 Jun 2018
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- Yes: All individual data regarding primary and secondary outcome measures.
Publications
Mjolsnes R, Arnason A, Osthagen T, Raastad T, Bahr R. A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players. Scand J Med Sci Sports. 2004 Oct;14(5):311-7. doi: 10.1046/j.1600-0838.2003.367.x.
PubMed 15387805Ishoi L, Holmich P, Aagaard P, Thorborg K, Bandholm T, Serner A. Effects of the Nordic Hamstring exercise on sprint capacity in male football players: a randomized controlled trial. J Sports Sci. 2018 Jul;36(14):1663-1672. doi: 10.1080/02640414.2017.1409609. Epub 2017 Dec 1.
PubMed 29192837
Study at a glance
From the registry record, last updated by the sponsor on 14 Jun 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Efficacy of a 10-week Intervention, Using the Nordic Hamstring Exercise, on Repeated-sprint Ability in Football (Soccer) Players - a Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT02674919
- Acronym / sponsor ID
- NHE-2016-LI
- Conditions
- Repeated-sprint Ability
- Keywords
- Repeated-sprint ability, Nordic Hamstring exercise, Eccentric hamstring muscle strength
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 35 participants (actual)
- Lead sponsor
- Hvidovre University HospitalUniversity, hospital or other
- Collaborators
- University of Southern Denmark, Aspetar
- Study start
- Feb 2016
- Primary completion
- Jun 2016 (actual)
- Study completion
- Jun 2016 (actual)
- First posted
- 5 Feb 2016 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of the study is to investigate the efficacy of a 10-week intervention, using the Nordic Hamstring exercise, on repeated-sprint ability in male sub-elite football players. The primary outcome measure is total sprint time during 4x6 sprint of 10 meters measured using dual-beam photoelectric cells. Additionally, eccentric knee flexor strength is measured using the Nordbord hamstring strength measure. The hypothesis is that strength training of the knee flexor muscles elicited by the Nordic Hamstring exercise will result in enhanced repetitive sprint-ability expressed as a decrease in total sprint time. Furthermore, baseline data is used to assess to correlation between eccentric hamstring strength and active hamstring flexibility AND sprint performance.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Nordic Hamstring | Experimental | Other: Nordic HamstringThe Nordic Hamstring group performs a progressive strengthening program (Mjolsnes et al., 2004) comprising of the Nordic Hamstring exercise during a period of 10 weeks. The training load increases from one session per week in week 1 to 3 sessions per week in week 3-10. Number of sets and repetitions progressively increase from 2 to 3 and 5 to 12, respectively. The exercise program is performed in the end of a regular football training session. |
| Control | Other | Other: ControlThe control group are asked not to perform the exercise or any other specific strength training for the hamstring muscles and to continue to play football as usual. |
Who may qualify
- Ages
- 17 to 35 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (3 listed)
- Sub-elite Danish football player
- Age 17-35.
- Able to participate fully in competitive football activities at the time of testing
Key exclusion criteria (4 listed)
- Hamstring pain resulting in loss of training and matches 2 months prior to study initiation.
- Specific systematic strength training of the hamstring muscles (>1/week) in the preceding 2 months before study initiation.
- Specific systematic sprint training (>1/week) in the preceding 2 months before study initiation.
- Longstanding injury (>6 weeks) in the lower extremities in the preceding 6 months to study initiation.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Nordic HamstringAlso: Hamstring lowers, Nordic lowers, Hamstring Curl | Other | Nordic Hamstring |
| Control | Other | Control |
Primary outcome
Total sprint time measured during 4x6 sprints of 10 meters. The sprints are performed every 15s and the sets are separated by 3 minutes of rest.
Time frame: Measured prior to and after the intervention period (at week 0 & 10)
5 secondary outcomes
Single sprint times (best sprint time, sprint time during last sprint).
Time frame: Measured prior to and after the intervention period (at week 0 & 10)
Maximal eccentric knee flexor strength measured using Nordbord device
Time frame: Measured prior to and after the intervention period (at week 0 & 10)
Eccentric knee flexor strength endurance measured during 12 repetitions of the Nordic Hamstring exercise using Nordbord device.
Time frame: Measured prior to and after the intervention period (at week 0 & 10)
Active range of motion of hamstring muscles measured using inclinometer.
Time frame: Measured prior to and after the intervention period (at week 0 & 10)
Correlation between eccentric hamstring strength and active hamstring flexibility AND sprint performance.
Time frame: Measured prior to the intervention (at week 0)
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Jun 2018.
- Background: PubMed 15387805Mjolsnes R, Arnason A, Osthagen T, Raastad T, Bahr R. A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players. Scand J Med Sci Sports. 2004 Oct;14(5):311-7. doi: 10.1046/j.1600-0838.2003.367.x.
- Derived from this study: PubMed 29192837Ishoi L, Holmich P, Aagaard P, Thorborg K, Bandholm T, Serner A. Effects of the Nordic Hamstring exercise on sprint capacity in male football players: a randomized controlled trial. J Sports Sci. 2018 Jul;36(14):1663-1672. doi: 10.1080/02640414.2017.1409609. Epub 2017 Dec 1.
- Individual participant dataSharing planned: Yes. All individual data regarding primary and secondary outcome measures.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Lasse Ishøi principal investigator
Hvidovre University Hospital. University of Southern Denmark
Per Hölmich study chair
Hvidovre University Hospital. Aspetar
Per Aagaard study chair
University of Southern Denmark
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Nordic Hamstring in people with Repeated-sprint Ability, run by Hvidovre University Hospital at 1 site in Denmark.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 14 Jun 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Total sprint time measured during 4x6 sprints of 10 meters. The sprints are performed every 15s and the sets are separated by 3 minutes of rest. (time frame: Measured prior to and after the intervention period (at week 0 & 10)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02674919, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Jun 2018.