Upper Trapezius Myofascial Trigger Point in Overhead Athletes After Upper Trapezius Muscle Fatigue

• Sponsor: National Taiwan University Hospital (Other)
• Overall Status: Completed
• CT.gov ID: NCT03993223
• Collaborator: (none)
• Enrollment: 60
• Location: 1
• Arms: 2
• Actual Duration (Months): 32.4
• Patients Per Site Per Month: 1.9

Study Details

Study Description

Brief Summary

The healthy overhead athletes with and without upper trapezius myofascial trigger point will be asked to perform a scapular elevation task until the upper trapezius muscle fatigue. The first hypothesis is that the subjects with upper trapezius myofascial trigger point will show significant difference in scapular kinematics and muscles activities when compared to subjects without upper trapezius myofascial trigger point. Besides, the investigators suggest that subjects with/without upper trapezius myofascial trigger point will show significant difference in scapular kinematics and muscles activities after upper trapezius muscle fatigue, especially in subjects with upper trapezius myofascial trigger point.

Condition or Disease	Intervention/Treatment	Phase
Myofascial Trigger Point Pain; Fatigue	Behavioral: Upper trapezius muscle fatigue	Phase 3

Detailed Description

The investigators will recruit healthy overhead athletes with and without upper trapezius myofascial trigger point. Participants will be asked to perform a sustained scapular elevation task at their peak force until the force decrease 50 %, which indicates upper trapezius muscle fatigue. There are two purposes in the current study: (1) to compare the differences between overhead athletes with/without upper trapezius myofascial trigger point during arm elevation in scapular kinematics and muscles activities (2) to investigate the effects of upper trapezius muscle fatigue on scapular kinematics and muscles activities in overhead athletes with/without upper trapezius myofascial trigger point. The first hypothesis is that the subjects with upper trapezius myofascial trigger point will show significant difference in scapular kinematics and muscles activities when compared to subjects without upper trapezius myofascial trigger point. Besides, the investigators suggest that subjects with/without upper trapezius myofascial trigger point will show significant difference in scapular kinematics and muscles activities after upper trapezius muscle fatigue, especially in subjects with upper trapezius myofascial trigger point. The outcome measurements includes scapular kinematics (upward/downward rotation, external/internal rotation, posterior/anterior tilting) and muscles activities (upper trapezius, serratus anterior, lower trapezius).

Study Design

• Study Type: Interventional
• Actual Enrollment: 60 participants
• Allocation: Randomized
• Intervention Model: Parallel Assignment
• Intervention Model Description: The treatment allocation and procedures involved in this randomized study were explained to all participants when they met inclusion criteria of VAS score of 4 or greater on the postoperative first day.The treatment allocation and procedures involved in this randomized study were explained to all participants when they met inclusion criteria of VAS score of 4 or greater on the postoperative first day.
• Masking: Triple (Care Provider, Investigator, Outcomes Assessor)
• Masking Description: Data were collected by the attending surgeon who was blinded to the group assignment.
• Primary Purpose: Treatment
• Official Title: Scapular Kinematic and Shoulder Muscle Activity Alterations in Overhead Athletes With/Without Upper Trapezius Myofascial Trigger Point After Muscle Fatigue
• Actual Study Start Date: Jun 17, 2019
• Actual Primary Completion Date: May 31, 2021
• Actual Study Completion Date: Feb 28, 2022

Arms and Interventions

Arm	Intervention/Treatment
Experimental: MTrP group Healthy overhead athletes with upper trapezius myofascial trigger point	Behavioral: Upper trapezius muscle fatigue; Isometric contraction of scapular elevation
Sham Comparator: Control group Healthy overhead athletes without upper trapezius myofascial trigger point	Behavioral: Upper trapezius muscle fatigue; Isometric contraction of scapular elevation

Outcome Measures

Primary Outcome Measures

1. Scapular kinematics [10 minutes]

   Change of scapular kinematics immediately after fatigue task

2. Scapular muscles electromyography [10 minutes]

   Change of scapular muscles electromyography immediately after fatigue task

Eligibility Criteria

Criteria

• Ages Eligible for Study: 18 Years to 50 Years
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: Yes

Inclusion Criteria:

• 18-50 years old active overhead athletes

• No symptoms in the shoulder of dominant side in the past 6 months

• Regularly perform overhead sports activity ≥ 3 hr/wk for more than 6 months

Exclusion Criteria:

• History of major shoulder/cervical injury or surgery in the past 6 months

• Experiencing shoulder pain, or participating in rehabilitation for shoulder pain in the past 6 months before the study

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	National Taiwan university hospital	Taipei		Taiwan

Sponsors and Collaborators

• National Taiwan University Hospital

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

• Responsible Party: National Taiwan University Hospital
• ClinicalTrials.gov Identifier: NCT03993223
• Other Study ID Numbers: 201904021RIND
• First Posted: Jun 20, 2019
• Last Update Posted: Mar 2, 2022
• Last Verified: Feb 1, 2022

• Individual Participant Data (IPD) Sharing Statement: Undecided
• Plan to Share IPD: Undecided
• Studies a U.S. FDA-regulated Drug Product: No
• Studies a U.S. FDA-regulated Device Product: No
• Keywords provided by National Taiwan University Hospital: Upper trapezius; Myofascial Trigger Point; Muscle fatigue; Overhead athlete
• Additional relevant MeSH terms: Myofascial Pain Syndromes; Fatigue

Study Results

No Results Posted as of Mar 2, 2022