The Copenhagen Adductor Exercise Trial

NCT03684200 | Completed DMC

• 1 other identifier: UBath
• Study Type: interventional
• Target: 39
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to investigate the efficacy of a 6-week intervention, using the Copenhagen adductor exercise, on adductor muscle strength in sub-elite male footballers. Secondly, it will also examine the effect of a 3-week detraining period, after stopping the Copenhagen adductor exercise, on adductor muscle strength. The primary outcome measure is eccentric hip adduction strength measured using a handheld dynamometer. Additionally, peak isometric adductor squeeze strength will also be measured using a handheld dynamometer. The hypothesis is that strength training of the adductor muscles elicited by the Copenhagen adductor exercise will result in enhanced eccentric hip adduction strength.

Conditions

Eccentric Hip Adduction Strength

Outcome Measures

Primary Outcomes (1)

• Eccentric hip adduction strength measured using a handheld dynamometer

  Lafayette handheld dynamometer (model: 01165) will be used to produce force values in Newtons.

  Measured after intervention period (at week 6)

Secondary Outcomes (7)

• Eccentric hip adduction strength measured using a handheld dynamometer

  Measured during intervention period (at week 3)

• Eccentric hip adduction strength measured using a handheld dynamometer

  Measured prior to and after intervention period (at week 0, 7, 8 and 9)

• Peak isometric adductor squeeze strength measured using a handheld dynamometer

  Measured after intervention period (at week 6)

• Peak isometric adductor squeeze strength measured using a handheld dynamometer

  Measured during intervention period (at week 3)

• Peak isometric adductor squeeze strength measured using a handheld dynamometer

  Measured prior to and after intervention period (at week 0, 7, 8 and 9)

Study Arms (2)

Copenhagen adductor exercise

EXPERIMENTAL

20 players allocated to the Copenhagen adductor exercise group complete a progressive strengthening programme comprising of the Copenhagen adductor exercise over a period of 6 weeks. They will complete two exercise sessions a week consisting of one set of the Copenhagen adductor exercise. The exercise will be performed on each side. The training load will increase from 5 repetitions in week 1, to 15 repetitions in week 6. The exercise programme is performed at the end of the warm-up of a regular football training session.

Other: Copenhagen adductor exercise

Control

NO INTERVENTION

19 players allocated to the control group will be asked not to perform the Copenhagen adductor exercise or any other specific strength training for the adductor muscles and to continue to play football as usual.

Interventions

Copenhagen adductor exercise OTHER

The active player is supported on one forearm on the floor and the upper arm is resting along their side. The supporting partner places their hands at the ankle and the knee of the upper leg. The active partner raises their body from the floor and adducts both legs in a three second movement until the body reaches a straight line. The body is then lowered to the ground in a three second movement, the foot of the lower leg touches the ground before performing another repetition.

Also known as: Adductor bridge exercise

Copenhagen adductor exercise

Eligibility Criteria

• Age: 18 Years - 26 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Sub-elite English football player
• Age 18-26
• Participant can read, speak and understand English.
• Participant can receive and reply to texts on a cell phone using Short Message Services (SMS).
• Able to participate fully in competitive football training at time of testing.

You may not qualify if:

• Hip and groin pain resulting in loss of football training and matches in the 2 months prior to commencement of the trial.
• Specific strength training of the adductor muscles (\>/1 week) in the 2 months prior to commencement of the trial.
• Participant cannot attend strength testing sessions during the study.

Sponsors & Collaborators

• University of Bath: lead
• Copenhagen University Hospital, Hvidovre: collaborator

Study Sites (1)

Physio & Sports Science Centre, University of Bath

Bath, Avon, BA2 7AY, United Kingdom

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: September 21, 2018
• First Posted: September 25, 2018
• Study Start: October 1, 2018
• Primary Completion: December 4, 2018
• Study Completion: December 10, 2018
• Last Updated: December 21, 2018

Record last verified: 2018-12

Locations

GB (1)