Immediate Effects of Shock Wave Therapy With Stretching or Isometric Contraction on Upper Trapezius (rESWT)
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.
Aperçu de l'étude
Statut
Les conditions
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
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Gwangju, Corée du Sud, 62287
- 73, Bungmun-daero 419beon-gil, Gwangju health university
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
Accepte les volontaires sains
La description
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
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Seul
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
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Comparateur actif: experimental 1 group
Radial Extracorporeal Shock Wave Therapy and Stretching
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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. |
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Comparateur actif: experimental 2 group
Radial Extracorporeal Shock Wave Therapy and Isometric Contraction
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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. |
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Muscle Tone
Délai: Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
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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.
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Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
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Muscle Stiffnes
Délai: 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.
|
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Muscle Thickness
Délai: 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.
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Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
|
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Grip Strength
Délai: Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
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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.
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Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
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Pressure Pain
Délai: Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
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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.
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Post-intervention measurement is conducted immediately after the intervention to assess immediate effects.
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Collaborateurs et enquêteurs
Parrainer
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- SYU 2025-06-024-001
Plan pour les données individuelles des participants (IPD)
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Informations sur les médicaments et les dispositifs, documents d'étude
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