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Enrolling by Invitation

NCT Number: NCT06826300

Application of Elbow Manipulation in Archers

The aim of this study was to: (i) assess the impact of maximal muscle strength and stiffness on EMG and Myoton parameters for selected upper limb muscles; and (ii) assess how manipulation of the initial 2-s tension phase, in particular involving muscle stretching, affects these EMG and Myoton parameters during karting training.

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Key information

Conditions

Health

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Go-Kart Track E1GOKARTS

Gdansk, 80-298, Poland

About this study

EMG and Myoton measurements will be performed on selected muscles of the shoulder joint and forearm during karting drivers' training, initially at the beginning, after the athletes perform their first 8-minute run, after manipulation and after another 8-minute run.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Healthy persons aged 18,
  • A license to drive a kart,
  • A competitor who regularly competes in the league,
  • Expressing informed consent to participate in the study and undertakes to comply with the regulations on the track and wear a helmet.

Exclusion criteria

  • Lack of volunteer consent,
  • Previous upper, lower limb and spine surgeries,
  • Other upper limb injuries in the last 6 months,
  • Pain limiting participation in the study,
  • Neurological diseases,
  • Connective tissue diseases.

Treatment and study plan

Manual therapy

Other

This technique involves a low-amplitude, high-velocity push on the shoulder and elbow joints with an additional two-second tension

Placebo

Other

Performing manipulations without a two-second preliminary tension of the joint capsule in the shoulder and elbow joints.

Primary outcomes

  1. Assessment of MVC.

    Time frame: The study will be conducted 4 times during one training session (before the intervention, after the intervention, after race 1 and after race 2). Each isometric muscle test lasts 3 seconds.

    Muscle EMG is an assessment of electrical characteristics during the test, the electrical source of which is the muscle membrane potential, and measured in μV.

  2. 2 Assessment of MVC.

    Time frame: The study will be conducted 4 times during one training session (before the intervention, after the intervention, after race 1 and after race 2).Each isometric muscle test lasts 3 seconds.

    Muscle EMG is an assessment of electrical characteristics during the test, which is measured by the repetition frequency of muscle motor unit discharges, which is measured in Hz, at the same time of the test.

  3. 3. Muscle stiffness

    Time frame: The study will be conducted 4 times during one training session (before the intervention, after the intervention, after race 1 and after race 2). Each Myoton application lasts 1 sec for one point.

    Muscle stiffness - characteristic resistance to physical contraction, which deforms initially forming. Stiffness (N/m) was calculated as S = amax.mprobe/Δl.

Sponsors and collaborators

Lead sponsor

Medical University of Gdansk

Other

Registry information

Official study title

Analysis of Muscle Strength and Stiffness and the Effect of Manual Therapy on the Time Travel Speed of Kart Drivers

Acronym: Manual Therapy

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Feb 13, 2025
Registry last updated
Feb 13, 2025

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.

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