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Completed

NCT Number: NCT03684200

The Copenhagen Adductor Exercise Trial

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.

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Key information

Conditions

Eccentric Hip Adduction Strength

Age range

18 year–26 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Physio & Sports Science Centre, University of Bath

Bath, Avon, BA2 7AY, United Kingdom

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 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.

Exclusion criteria

  • 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.

Treatment and study plan

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.

Other names: Adductor bridge exercise

Primary outcomes

  1. Eccentric hip adduction strength measured using a handheld dynamometer

    Time frame: Measured after intervention period (at week 6)

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

Secondary outcomes

  1. Eccentric hip adduction strength measured using a handheld dynamometer

    Time frame: Measured during intervention period (at week 3)

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

  2. Eccentric hip adduction strength measured using a handheld dynamometer

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

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

  3. Peak isometric adductor squeeze strength measured using a handheld dynamometer

    Time frame: Measured after intervention period (at week 6)

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

  4. Peak isometric adductor squeeze strength measured using a handheld dynamometer

    Time frame: Measured during intervention period (at week 3)

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

  5. Peak isometric adductor squeeze strength measured using a handheld dynamometer

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

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

  6. Maximal weekly delayed onset of muscle soreness (DOMS)

    Time frame: Measured during intervention period (at week 1, 2, 3, 4, 5 and 6)

    Measured using a 0-10 numeric rating scale (NRS).

  7. Rate of perceived exertion (RPE) at each session training session.

    Time frame: Measured during intervention period (at week 1, 2, 3, 4, 5 and 6)

    Measured using the 6-20 Borg Rating of Perceived Exertion Scale.

Sponsors and collaborators

Lead sponsor

University of Bath

Other

Collaborators

  • Copenhagen University Hospital, Hvidovre

Registry information

Official study title

Hip Adductor Muscle Strength Changes With the Copenhagen Adductor Exercise in Male Football (Soccer) Players.

Important dates

Study start
2018
Primary completion
2018
Study completion
2018
First posted
Sep 25, 2018
Registry last updated
Dec 21, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.