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Effects of Squat Variations on Quadriceps Muscle Thickness and Strength

9. september 2026 opdateret af: FİLİZ EYÜBOĞLU, Uskudar University

The study was conducted using a randomized controlled trial design. Participants who met the inclusion criteria were randomly assigned to either the "Classic Squat Group" or the "Heel-Elevated Squat Group." Both groups completed an 8-week strength training program consisting of three sessions per week, following the resistance exercise principles recommended by the American College of Sports Medicine. The main component of the program was the assigned squat variation.

Baseline and post-intervention assessments at 8 weeks were performed according to standardized protocols. Exercise sessions were supervised by an experienced physiotherapist to ensure proper technique and minimize injury risk. Training intensity was progressively increased based on participants' adaptation and one-repetition maximum (1-RM) strength levels.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

42

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

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

  • Voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • No musculoskeletal, neurological, or cardiopulmonary conditions that would prevent participation in exercise
  • Healthy young adults
  • No regular lower extremity training participation in the last 6 months

Exclusion Criteria:

  • History of surgery or serious injury to the knee, hip, or ankle joints within the past year
  • Presence of any neurological disorder affecting balance or motor control
  • Presence of any cardiovascular or pulmonary disease that contraindicates exercise participation

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Tradional Squat Group
Participants performed the tradional squat exercise as part of an 8-week training program.
Andet: Tradional Squat Group
Participants completed an 8-week supervised bodyweight squat program performed twice weekly, with progressive increases in training volume and intensity. Squats were performed to approximately parallel depth, using a controlled ~2-s eccentric phase followed by maximal intended concentric velocity, with 2-min rest intervals between sets.
Andre navne:
  • Classic Squat Group
Eksperimentel: Heel-Elevated Squat Exercise
Participants performed heel-elevated squat exercise as part of an 8-week training program.
Andet: Heel-Elevated Squat Group
Participants in the Heel-Elevated Squat Group performed all repetitions with both heels supported on rigid 5-cm wedges. Participants completed an 8-week supervised bodyweight squat program performed twice weekly, with progressive increases in training volume and intensity. Squats were performed to approximately parallel depth, using a controlled ~2-s eccentric phase followed by maximal intended concentric velocity, with 2-min rest intervals between sets.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Muscle Strength (Isomed 2000 Isokinetic Dynamometer)
Tidsramme: Baseline and 8 weeks post-intervention
Quadriceps muscle strength was assessed using a Isomed 2000 isokinetic dynamometer, which is considered a gold-standard method for evaluating muscle performance. Isokinetic testing measures maximal torque produced by the muscle throughout the range of motion at a constant angular velocity, providing reliable data on muscle function. Knee extension strength were evaluated.
Baseline and 8 weeks post-intervention

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Assessment of Muscle Thickness
Tidsramme: Baseline and 8 weeks post-intervention
Before measurement, participants rested for 20 minutes, and quadriceps muscle thickness was assessed at the midpoint between the anterior superior iliac spine and the superior pole of the patella using B-mode ultrasonography. Anterior thigh muscle thickness was defined as the distance between the superficial fascia of the rectus femoris and the femoral periosteum, representing the combined thickness of the rectus femoris and vastus intermedius.
Baseline and 8 weeks post-intervention

Samarbejdspartnere og efterforskere

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

Sponsor

Uskudar University

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Hjælpsomme links

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)

27. april 2026

Primær færdiggørelse (Faktiske)

4. maj 2026

Studieafslutning (Faktiske)

20. juli 2026

Datoer for studieregistrering

Først indsendt

15. juni 2026

Først indsendt, der opfyldte QC-kriterier

13. juli 2026

Først opslået (Faktiske)

14. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

14. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

9. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • UskudarUUU

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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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 .

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