Postural Stability and Trunk Strength in Wrestlers

Summary

The goal of this observational study is to evaluate the relationship between sagittal plane isokinetic trunk strength and dynamic postural stability in elite wrestlers compared to healthy sedentary volunteers (males, aged 18-30).

The main questions it aims to answer are:

Is there a significant correlation between maximal concentric isokinetic trunk torque/power values and dynamic postural stability variables in elite wrestlers? How do the agonist/antagonist (flexion/extension) ratios and core strength profiles of elite wrestlers differ from those of a sedentary control group.

Comparison Group: Researchers will compare elite wrestlers (with at least 5 years of professional experience) to a healthy sedentary control group to see if professional wrestling training leads to superior trunk muscle integration and enhanced dynamic balance control.Participants will:Complete a demographic data form and a health screening to ensure they meet the inclusion/exclusion criteria (e.g., no history of spinal surgery or acute back pain).Perform a standardized warm-up session on a cycle ergometer at 55-60 rpm.Undergo dynamic postural stability testing to measure balance control and center of gravity displacement.Perform isokinetic trunk strength testing (flexion and extension) to measure peak torque, total work, and power values relative to body weight (PT/BW).

Conditions

• Postural Stability
• Trunk Muscle Strength

Interventions

OTHER

ısokinetic trunk muscle strength

runk flexion and extension muscle strength measurements will be performed using the Cybex NORM computerized isokinetic dynamometer which is considered the gold standard for muscle strength assessment. During the measurement, participants will be positioned standing on the device; support pads will be used to stabilize the lower extremities, and stabilization belts will be fastened to fix the pelvis and minimize the involvement of the hip flexors. Strength assessment will consist of trunk flexion-extension movements involving 5 repetitions at an angular velocity of 60°/s, while the endurance test will be conducted with 15 repetitions at 90°/s. This protocol was selected based on previous studies in the literature. A 20-second rest interval will be provided between repetitions. The following parameters obtained under isokinetic conditions will be analyzed: peak torque, peak torque normalized to body weight, total work, and total work normalized to body weight.

OTHER

Postural Stability

Postural stability measurements will be performed using the Biodex Balance System SD (Biodex Medical Systems, Inc., Shirley, NY, USA), which is a computer-assisted balance assessment system with a multi-axial moving platform. The device objectively evaluates both static and dynamic postural stability. The postural stability assessment will involve both double-leg and single-leg measurements. During the test, all participants will be required to stand barefoot with their arms parallel to their bodies and eyes open, first on a single leg and then on both legs. At the beginning of the trial, participants will be instructed to maintain their balance throughout the test duration. The same procedure will consist of three 20-second repetitions for each extremity, with 10-second rest intervals between repetitions. The balance system will evaluate and record the Overall Stability Index (OSI), Anterior-Posterior Stability Index (APSI), and Medial-Lateral Stability Index (MLSI) for each part

Sponsors & Collaborators

• Biruni University

  lead OTHER

Eligibility

Min Age

18 Years

Max Age

35 Years

Sex

MALE

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2026-04-01

Primary Completion

2026-04-20

Completion

2026-04-28

Countries

• Turkey (Türkiye)

Study Locations