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Immediate Effects of Shock Wave Therapy With Stretching or Isometric Contraction on Upper Trapezius (rESWT)

19. maj 2026 opdateret af: Gukhwa Han, Sahmyook University

The Immediate Effects of Simultaneous Application of Radial Extracorporeal Shock Wave Therapy and Stretching or Isometric Contraction on Muscle Tone, Stiffness, Thickness, Pressure Pain Threshold, and Grip Strength of the Upper Trapezius

Excessive use of smart devices and prolonged sitting posture in modern daily life can lead to potential hypertonicity and functional impairment of the upper trapezius even in healthy individuals. Such conditions may cause functional changes and discomfort before the onset of pain, and early intervention may help prevent the progression to musculoskeletal disorders. Therefore, this study aims to investigate the immediate effects of radial extracorporeal shock wave therapy (rESWT) applied simultaneously with stretching or isometric contraction on muscle tone, stiffness, thickness, pressure pain threshold, and grip strength of the upper trapezius in healthy adults.

Participants will be divided into two groups : rESWT + stretching and rESWT + isometric contraction. Immediate changes in the upper trapezius will be compared before and after the interventions. rESWT will be applied to the upper trapezius with 1.0 bar pressure, 10 Hz frequency, and 1000 shocks.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

30

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

  • Sydkorea
      • Gwangju, Sydkorea, 62287
        • 73, Bungmun-daero 419beon-gil, Gwangju health university

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:

  • Individuals with no history of neck or shoulder pain in the past 6 months
  • Individuals with no history of upper limb musculoskeletal disorders
  • Individuals with a pressure pain threshold (PPT) of the upper trapezius ≥ 263 kPa

Exclusion Criteria:

  • Individuals with a history of neurological or orthopedic disorders
  • Individuals taking medications that may affect ESWT response
  • Individuals with local skin conditions, including ulcers or open wounds

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

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

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: experimental 1 group
Radial Extracorporeal Shock Wave Therapy and Stretching
Andet: Radial Extracorporeal Shock Wave Therapy and Stretching

Participants will sit on a chair and receive rESWT with gel applied to the upper trapezius. A 20 mm rESWT applicator angled at 90° will be applied to the muscle belly and the musculotendinous junction. The intensity will be set at 1.0 bar pressure, 10 Hz frequency, with 1000 shocks.

When rESWT is applied to the upper trapezius, participants will sit on a chair and repeatedly bend the neck diagonally to stretch the muscle, then return to the neutral position.
Aktiv komparator: experimental 2 group
Radial Extracorporeal Shock Wave Therapy and Isometric Contraction
Andet: Radial Extracorporeal Shock Wave Therapy and Isometric Contraction

Participants will sit on a chair and receive rESWT with gel applied to the upper trapezius. A 20 mm rESWT applicator angled at 90° will be applied to the muscle belly and the musculotendinous junction. The intensity will be set at 1.0 bar pressure, 10 Hz frequency, with 1000 shocks.

When rESWT is applied to the upper trapezius, participants will sit on a chair and maintain a shoulder elevation posture during the intervention.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Muscle Tone
Tidsramme: Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
Upper trapezius muscle stiffness will be assessed as dynamic stiffness (N/m) using the MyotonPRO device (Myoton AS, Tallinn, Estonia). The probe will be positioned perpendicular to the skin over the belly of the upper trapezius muscle. After a pre-load of approximately 0.18 N, 10 mechanical impulses of approximately 0.4 N at 1 Hz will be delivered. Measurements will be repeated 3 times, and the mean value will be used for analysis. Change from baseline will be calculated as the immediate post-intervention value minus the baseline value.
Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
Muscle Stiffnes
Tidsramme: Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
Upper trapezius muscle stiffness will be assessed as dynamic stiffness (N/m) using the MyotonPRO device (Myoton AS, Tallinn, Estonia). The probe will be positioned perpendicular to the skin over the belly of the upper trapezius muscle. After a pre-load of approximately 0.18 N, 10 mechanical impulses of approximately 0.4 N at 1 Hz will be delivered. Measurements will be repeated 3 times, and the mean value will be used for analysis. Change from baseline will be calculated as the immediate post-intervention value minus the baseline value.
Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
Muscle Thickness
Tidsramme: Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
The probe of the ultrasound imaging device is placed perpendicular to the target area without applying any pressure after applying a water-based transmission gel, in order to measure muscle thickness. Then, using a 2.5 MHz ultrasound, strong echoes at tissue interfaces are focused, and the distance between the focused points is converted into millimeters to determine tissue thickness.
Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
Grip Strength
Tidsramme: Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
Grip strength is measured using a wireless dynamometer. The participant holds the dynamometer with the arm relaxed, the elbow flexed at 90°, the arm slightly away from the torso, and the wrist in a neutral position. Following the researcher's instructions, the participant exerts maximum force. The measurement is repeated three times, and the average value is recorded.
Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
Pressure Pain
Tidsramme: Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
The participant sits upright with the back supported by a wall or chair and feet flat on the floor. A pressure algometer with a 1 cm² rubber tip is placed perpendicular to the same muscle belly measured by the Myoton PRO. The researcher applies gradual pressure at a constant rate of 0.5 kg/cm²/s until the participant reports pain, and the value at the point of reported pain is recorded. The measurement is repeated twice, and the average value is used.
Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.

Samarbejdspartnere og efterforskere

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

Sponsor

Sahmyook 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. september 2025

Primær færdiggørelse (Faktiske)

10. oktober 2025

Studieafslutning (Faktiske)

25. oktober 2025

Datoer for studieregistrering

Først indsendt

11. december 2025

Først indsendt, der opfyldte QC-kriterier

19. maj 2026

Først opslået (Faktiske)

27. maj 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

27. maj 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

19. maj 2026

Sidst verificeret

1. maj 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • SYU 2025-06-024-001

Plan for individuelle deltagerdata (IPD)

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Kliniske forsøg med Myofascial Pain Syndrome (MPS)

Kliniske forsøg med Radial Extracorporeal Shock Wave Therapy and Stretching

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