Postural Stability and Trunk Strength in Wrestlers

NCT07452328 | Completed

• 1 other identifier: 7
• Study Type: observational
• Target: 46
• Locations: 1 country
• Sites: 1

Brief 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

Keywords

wrestlers; postural stability; trunk muscle strength; isokinetic test

Outcome Measures

Primary Outcomes (2)

• Isokinetic muscle strength

  Enrollment

• Postural Stability

  Enrollment

Study Arms (2)

Wrestlers

The wrestlers who participated in the study had a minimum of five years of professional experience and were screened for any pre-existing musculoskeletal conditions

Other: ısokinetic trunk muscle strength; Other: Postural Stability

Control group

Sedantary healthy people

Other: ısokinetic trunk muscle strength; Other: Postural Stability

Interventions

ısokinetic trunk muscle strength OTHER

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.

Control group; Wrestlers

Postural Stability OTHER

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

Control group; Wrestlers

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

The study involves a convenience sample of elite male wrestlers and age-matched healthy sedentary controls. All participants are recruited from local wrestling clubs and the university community. The target population consists of individuals aged 18-30 who meet specific physical and professional athletic criteria, ensuring a comparison between high-level functional core strength and a standard sedentary baseline

You may qualify if:

• Wrestler:
• Aged 18-35 years.
• Minimum of 5 years of licensed athletic background and actively competing at a professional level in wrestling
• Control Group:
• Aged 18-35 years.
• Leading a sedentary lifestyle (no regular physical activity).

You may not qualify if:

• Any musculoskeletal injury within the last 6 months resulting in a loss of training or competition time
• Current complaints of acute back pain.
• History of surgical intervention or deformity in the upper extremities, lower extremities, or spine.
• Presence of any neurological, systemic, or vestibular disorders that may impair balance and motor control.
• Presence of active infection.
• Presence or history of malignancy.

Sponsors & Collaborators

• Biruni University: lead

Study Sites (1)

Biruni University

Istanbul, Istanbul, 34103, Turkey (Türkiye)

Location

Related Publications (13)

• Hugel F, Cadopi M, Kohler F, Perrin P. Postural control of ballet dancers: a specific use of visual input for artistic purposes. Int J Sports Med. 1999 Feb;20(2):86-92. doi: 10.1055/s-2007-971098.

  PMID: 10190767 RESULT

• Shumway-Cook A, Anson D, Haller S. Postural sway biofeedback: its effect on reestablishing stance stability in hemiplegic patients. Arch Phys Med Rehabil. 1988 Jun;69(6):395-400.

  PMID: 3377664 RESULT

• Crisco JJ, Panjabi MM, Yamamoto I, Oxland TR. Euler stability of the human ligamentous lumbar spine. Part II: Experiment. Clin Biomech (Bristol). 1992 Feb;7(1):27-32. doi: 10.1016/0268-0033(92)90004-N.

  PMID: 23915613 RESULT

• Kibler WB, Press J, Sciascia A. The role of core stability in athletic function. Sports Med. 2006;36(3):189-98. doi: 10.2165/00007256-200636030-00001.

  PMID: 16526831 RESULT

• Aasa U, Svartholm I, Andersson F, Berglund L. Injuries among weightlifters and powerlifters: a systematic review. Br J Sports Med. 2017 Feb;51(4):211-219. doi: 10.1136/bjsports-2016-096037. Epub 2016 Oct 4.

  PMID: 27707741 RESULT

• Orchard JW, Farhart P, Leopold C. Lumbar spine region pathology and hamstring and calf injuries in athletes: is there a connection? Br J Sports Med. 2004 Aug;38(4):502-4; discussion 502-4. doi: 10.1136/bjsm.2003.011346.

  PMID: 15273195 RESULT

• Yahia A, Jribi S, Ghroubi S, Elleuch M, Baklouti S, Habib Elleuch M. Evaluation of the posture and muscular strength of the trunk and inferior members of patients with chronic lumbar pain. Joint Bone Spine. 2011 May;78(3):291-7. doi: 10.1016/j.jbspin.2010.09.008. Epub 2010 Oct 23.

  PMID: 20971670 RESULT

• Van Damme BB, Stevens VK, Van Tiggelen DE, Duvigneaud NN, Neyens E, Danneels LA. Velocity of isokinetic trunk exercises influences back muscle recruitment patterns in healthy subjects. J Electromyogr Kinesiol. 2013 Apr;23(2):378-86. doi: 10.1016/j.jelekin.2012.10.015. Epub 2012 Dec 6.

  PMID: 23219215 RESULT

• Willson JD, Dougherty CP, Ireland ML, Davis IM. Core stability and its relationship to lower extremity function and injury. J Am Acad Orthop Surg. 2005 Sep;13(5):316-25. doi: 10.5435/00124635-200509000-00005.

  PMID: 16148357 RESULT

• Akuthota V, Ferreiro A, Moore T, Fredericson M. Core stability exercise principles. Curr Sports Med Rep. 2008 Feb;7(1):39-44. doi: 10.1097/01.CSMR.0000308663.13278.69.

  PMID: 18296944 RESULT

• Hu F, Gu DY, Chen JL, Wu Y, An BC, Dai KR. Contribution of arm swing to dynamic stability based on the nonlinear time series analysis method. Annu Int Conf IEEE Eng Med Biol Soc. 2012;2012:4831-4. doi: 10.1109/EMBC.2012.6347075.

  PMID: 23367009 RESULT

• Baur H, Muller S, Pilz F, Mayer P, Mayer F. Trunk extensor and flexor strength of long-distance race car drivers and physically active controls. J Sports Sci. 2010 Sep;28(11):1183-7. doi: 10.1080/02640414.2010.484066.

  PMID: 20694935 RESULT

• Zouita ABM, Zouita S, Dziri C, Brughelli M, Behm DG, Chaouachi A. Differences in Trunk Strength Between Weightlifters and Wrestlers. J Hum Kinet. 2019 Jul 5;67:5-15. doi: 10.2478/hukin-2019-0007. eCollection 2019 Jun.

  PMID: 31523302 RESULT

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Asistant professor

Study Record Dates

• First Submitted: March 1, 2026
• First Posted: March 5, 2026
• Study Start: April 1, 2026
• Primary Completion: April 20, 2026
• Study Completion: April 28, 2026
• Last Updated: May 5, 2026

Record last verified: 2026-03

Locations

TU (1)