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THE EFFECT OF CORRECTIVE EXERCISES ON Q ANGLE AND JUMP-LANDING MECHANICS

5. maj 2026 opdateret af: Istanbul Gelisim University

The Effect of Corrective Exercises on Q Angle, Balance, and Jump-Landing Mechanics in Female Volleyball Players

This study examines the effects of an 8-week structured corrective exercise program on Q angle and jump-landing mechanics (evaluated via the Landing Error Scoring System - LESS) in competitive young female volleyball players during their in-season period. Twenty-three athletes were assigned to either an experimental group receiving corrective exercises or a control group maintaining standard training. The primary goal is to determine if targeted biomechanical corrections can improve knee alignment and movement quality to mitigate injury risks.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The intervention consists of a specialized corrective exercise program focused on body segment alignment and injury risk mitigation, performed over an 8-week duration. Assessments were conducted pre- and post-intervention, including:

Static Q angle measurements.

Biomechanical analysis using the Landing Error Scoring System (LESS).

Countermovement jump (CMJ) height to evaluate explosive power.

The study analyzes whether integrating these exercises into in-season training effectively reduces the Q angle and improves jump-landing mechanics compared to a control group performing only standard volleyball training.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

23

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Tyrkiet (Türkiye)
      • Istanbul, Tyrkiet (Türkiye), 34310
        • Istanbul Gelisim University, Faculty of Sport Sciences

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

Licensed young female volleyball players.

Aged between 14 and 17 years.

Willingness to participate voluntarily with parental and athlete consent.

Exclusion Criteria:

History of major lower extremity injuries or orthopedic surgery.

Presence of any musculoskeletal or neurological condition that prevents participation in the exercise program.

Lack of regular attendance at volleyball training sessions.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Experimental Group
Young female volleyball players (n=12) who participated in an 8-week structured corrective exercise program during the in-season period, in addition to their standard volleyball training
Adfærdsmæssigt: Structured Corrective Exercise Program
The corrective exercise program was implemented 3 times per week for 8 weeks during the in-season period. The protocol focused on optimizing lower extremity alignment, improving neuromuscular control, and correcting faulty jump-landing patterns. Key components included exercises targeting body segment alignment, specific drills to reduce the Q angle, and neuromuscular training to enhance Landing Error Scoring System (LESS) scores. All sessions were integrated into the athletes' regular volleyball training schedule to ensure proper kinetic chain integration and injury risk mitigation.
Ingen indgriben: Control Group
Young female volleyball players (n=11) who continued their standard volleyball training during the 8-week study period without participating in any corrective exercise protocol.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Static Q Angle
Tidsramme: Baseline and at the end of the 8-week intervention.
The measurement of the angle between the quadriceps muscle and the patellar tendon to assess lower extremity alignment.
Baseline and at the end of the 8-week intervention.
Landing Error Scoring System (LESS) Score
Tidsramme: Baseline and post-intervention (8 weeks).
A clinical tool used to assess jump-landing mechanics through video analysis.
Baseline and post-intervention (8 weeks).
Countermovement Jump (CMJ) Height
Tidsramme: Baseline and post-intervention (8 weeks).
Measurement of vertical jump height to evaluate explosive power.
Baseline and post-intervention (8 weeks).

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Istanbul Gelisim University

Efterforskere

  • Ledende efterforsker: Burak Taş, PhD, İstanbul Gelisim University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

20. februar 2023

Primær færdiggørelse (Faktiske)

10. maj 2024

Studieafslutning (Faktiske)

15. juni 2024

Datoer for studieregistrering

Først indsendt

5. maj 2026

Først indsendt, der opfyldte QC-kriterier

5. maj 2026

Først opslået (Faktiske)

11. maj 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

11. maj 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

5. maj 2026

Sidst verificeret

1. maj 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • GOKAEK-2022/21.16

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

Individual participant data that underlie the results reported in this article, after de-identification, will be available from the corresponding author on reasonable request.

IPD-delingstidsramme

Data will be available beginning 6 months after publication and ending 3 years after publication.

IPD-delingsadgangskriterier

De-identified individual participant data will be available to researchers who provide a methodologically sound proposal for use in achieving the goals of the approved proposal. Proposals should be directed to btas@gelisim.edu.tr. To gain access, data requestors will need to sign a data access agreement.

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP
  • ICF

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Knæskader

Kliniske forsøg med Structured Corrective Exercise Program

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