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NCT Number: NCT06053632

Young Age Soccer Player's Lower Limb Muscle Imbalance and Functional Status

A randomized controlled trial is designed to examine the effects of low-load and high-velocity eccentric exercises on lower limb muscular properties, imbalances and functional status of 13-15 years old female football players.

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Key information

Conditions

Healthy

Age range

13 year–15 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Lithuanian Sports University

Kaunas, 44221, Lithuania

About this study

Twenty participants were included in the study. All participants were divided in two groups - control and experimental. In the experimental group (n=10) participants after team soccer training additional received 4 weeks eccentric exercises, in the control group (n=10) - did not perform additional exercises. The research group performed additional low-load and high-velocity - lying prone - eccentric hamstring exercise 3 times per week for 4 weeks. Pre- and post- training assessment included concentric/eccentric knee extension and flexion at 60°/s and 120°/s, changes in muscle contractile characteristics and dynamic balance.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Healthy players able to participate in training and competitions.
  • Playing football for at least 2 years.
  • Regularly participating in team training, 2-3 times a week.

Exclusion criteria

  • Female soccer players with a lower extremity injury (in a period of 6 months)
  • Pain is less than 2 points on the Visual Analog Pain Scale.
  • Irregular exercise
  • The number of years of training attended is too low

Treatment and study plan

Low-load and high-velocity - lying prone - eccentric hamstring exercise

Behavioral

Low-load and high-velocity - lying prone - eccentric hamstring exercise 3 times per week for 4 weeks.

Primary outcomes

  1. Changes in isokinetic peak torque (with Biodex)

    Time frame: Baseline and after 4 weeks

    Knee extension/flexion isokinetic peak torque measurements will be done at 60°/s, 120°/s

  2. Dynamic balance

    Time frame: Baseline and after 4 weeks

    Y-balance Test evaluates lower extremity strength, knee stability and dynamic balance in anterior, posteromedial and posterolateral direction. For each direction, three practice trials were allowed before three test trials were recorded. Mean reach distances (cm) was normalized to leg length, which was measured from the anterior superior iliac spine to the most distal portion of the medial malleolus.

  3. Changes in muscle contractile characteristics (with tensiomyography (TMG))

    Time frame: Baseline and after 4 weeks

    Muscle involuntary contractile characteristics of the lower-limb muscles-the rectus femoris (RF), vastus medialis (VM), vastus lateralis (VL), biceps femoris (BF), semitendinosus (ST), tibialis anterior (TA), gastrocnemius medialis (GM) and gastrocnemius lateralis (GL)-will be recorded by measuring the response of these muscles to an induced electric stimulus (provoked by two self-adhesive electrodes) using TMG equipment on both the left and right lower extremities.

Sponsors and collaborators

Lead sponsor

Lithuanian Sports University

Other

Registry information

Official study title

The Effect of Eccentric Exercises on Lower Limb Muscle Imbalances and Functional Status of Young Female Football Players

Important dates

Study start
2023
Primary completion
2023
Study completion
2023
First posted
Sep 26, 2023
Registry last updated
Sep 28, 2023

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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