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MULTİDİMENSİONAL ASSESSMENT OF MUSCLE FATİGUE İN SOCCER PLAYERS (MAMF)

18. juni 2026 oppdatert av: Tugce Namazci, Giresun University

MULTIDIMENSIONAL ASSESSMENT OF MUSCLE FATIGUE USING ACCELEROMETER, ELECTROMYOGRAPHY AND MUSCLE THICKNESS DATA

Muscle fatigue is a multifactorial physiological phenomenon characterized by a reduction in the ability of a muscle to generate force during sustained or repetitive contractions. This cross-sectional observational study aimed to investigate the relationships among muscle thickness, surface electromyography (sEMG) median frequency, accelerometer-derived mechanical vibration parameters, and isometric force characteristics in healthy male soccer players. Thirty participants aged 18-30 years underwent ultrasonographic muscle thickness assessment, synchronized sEMG and accelerometer recordings, and isometric strength testing at different knee flexion angles (90°, 60°, and 30°). The study evaluated the interaction between morphological, electrical, and mechanical indicators of muscle fatigue to support the development of multidimensional fatigue monitoring approaches.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Muscle fatigue is commonly assessed using surface electromyography (sEMG), particularly through frequency-domain parameters such as median frequency. However, fatigue-related changes are not limited to electrical activity and may also involve alterations in muscle mechanical behavior and morphological characteristics. Accelerometer-derived signals provide information regarding muscle vibrations and mechanical oscillations, while ultrasonographic measurements of muscle thickness provide information about muscle morphology and force-generating capacity.

The purpose of this study was to examine the relationships among muscle thickness, sEMG median frequency, accelerometer-derived mechanical vibration parameters, and isometric force variables during maximal voluntary isometric contractions performed at different knee flexion angles. Healthy male soccer players participated in a laboratory-based assessment protocol including ultrasonography, synchronized sEMG recordings, triaxial accelerometry, and isokinetic dynamometry.

Muscle thickness of the vastus lateralis obliquus (VLO), vastus medialis obliquus (VMO), and rectus femoris obliquus (RFO) muscles was measured using ultrasonography. Participants subsequently performed maximal voluntary isometric contractions at 90°, 60°, and 30° knee flexion angles. Surface electromyography, accelerometer signals, and force-related variables were recorded simultaneously. Median frequency values, acceleration-based root mean square (RMS) parameters, peak torque, mean torque, and time-to-peak torque variables were analyzed.

The study aimed to provide a multidimensional framework for muscle fatigue assessment by integrating morphological, electrical, and mechanical indicators and to explore their associations in healthy athletic populations.

Studietype

Observasjonsmessig

Registrering (Faktiske)

30

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Tyrkia (Türkiye)
    • Merkez
      • Ordu, Merkez, Tyrkia (Türkiye), 52100
        • Ordu University Faculty of Sports Sciences

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen

Tar imot friske frivillige

Ja

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

Healthy male soccer players aged 18 to 30 years who were actively participating in regular football training and competition. Participants were recruited from football teams and underwent assessments of muscle thickness, surface electromyography (sEMG), accelerometer-derived mechanical vibration parameters, and isometric strength during laboratory-based testing sessions. Only individuals meeting all eligibility criteria and providing informed consent were included in the study.

Beskrivelse

Inclusion Criteria:

  • Healthy male soccer players aged 18-30 years
  • No lower extremity injury within the previous six months
  • No condition limiting lower extremity exercise performance
  • No caffeine or stimulant consumption on the testing day
  • Non-smoker
  • Provided written informed consent

Exclusion Criteria:

  • Female athletes
  • Serious injury to the dominant leg within the previous year
  • Intense exercise within the previous 24 hours
  • Use of pain relievers or muscle relaxants on the testing day
  • Inability to complete testing procedures

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Kohorter og intervensjoner

Gruppe / Kohort
Intervensjon / Behandling
Healthy Male Soccer Players
Healthy male soccer players aged 18-30 years who participated in a cross-sectional observational study. Participants underwent ultrasonographic muscle thickness assessment, surface electromyography (sEMG), accelerometer-based mechanical vibration measurements, and isometric strength testing during maximal voluntary isometric contractions performed at different knee flexion angles (30°, 60°, and 90°).
Enhet: Neuromuscular Assessment Devices
Participants underwent non-invasive neuromuscular assessment procedures using surface electromyography (sEMG), triaxial accelerometers, ultrasonography, and an isokinetic dynamometer. Measurements were performed during maximal voluntary isometric contractions at 30°, 60°, and 90° knee flexion angles. The devices were used exclusively for data collection and assessment purposes. No therapeutic, pharmacological, behavioral, or rehabilitative intervention was administered.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Surface Electromyography (sEMG) Median Frequency
Tidsramme: Day 1
Median frequency (Hz) obtained from the vastus lateralis obliquus (VLO), vastus medialis obliquus (VMO), and rectus femoris obliquus (RFO) muscles during maximal voluntary isometric contractions performed at 30°, 60°, and 90° knee flexion angles.
Day 1

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Muscle Thickness
Tidsramme: Day 1
Ultrasonographic muscle thickness measurements of the VLO, VMO, and RFO muscles (mm).
Day 1
Accelerometer-Derived Mechanical Vibration Parameters
Tidsramme: Day 1
Root mean square (RMS) acceleration values obtained from thigh and shank triaxial accelerometers during isometric contractions.
Day 1
Isometric Strength Parameters
Tidsramme: Day 1
Peak torque, mean torque, and time-to-peak torque measured using an isokinetic dynamometer during maximal voluntary isometric contractions.
Day 1

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Giresun University

Etterforskere

  • Hovedetterforsker: Tuğçe Namazcı, PhD, Giresun Üniversitesi

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Hjelpsomme linker

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. november 2024

Primær fullføring (Faktiske)

20. februar 2025

Studiet fullført (Faktiske)

15. mars 2025

Datoer for studieregistrering

Først innsendt

12. juni 2026

Først innsendt som oppfylte QC-kriteriene

18. juni 2026

Først lagt ut (Faktiske)

24. juni 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

24. juni 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

18. juni 2026

Sist bekreftet

1. juni 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Andre studie-ID-numre

  • TN-2024-127

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

IPD-planbeskrivelse

Individual participant data will not be publicly shared. The study was conducted as part of a doctoral thesis, and no formal data-sharing plan has been established. Aggregate study results are reported in publications, while access to underlying data may be considered by the corresponding author on a reasonable request basis and in accordance with applicable ethical and institutional requirements.

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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Abonnere