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

Fatigue Clinical Trial

Official title:

Scapular Kinematic and Shoulder Muscle Activity Alterations in Overhead Athletes With/Without Upper Trapezius Myofascial Trigger Point After Muscle Fatigue

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03993223
• Other study ID #: 201904021RIND
• Status: Completed
• Phase: Phase 3
• Start date: June 17, 2019
• Est. completion date: February 28, 2022

Study information

• Verified date: February 2022
• Source: National Taiwan University Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

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).

Recruitment information / eligibility

• Status: Completed
• Enrollment: 60
• Est. completion date: February 28, 2022
• Est. primary completion date: May 31, 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 50 Years

Eligibility

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

Related Conditions & MeSH terms

• Fatigue
• Myofascial Pain Syndromes
• Myofascial Trigger Point Pain

Intervention

Behavioral:
• Upper trapezius muscle fatigue
Isometric contraction of scapular elevation

Locations

Country	Name	City	State
Taiwan	National Taiwan university hospital	Taipei

Sponsors (1)

Lead Sponsor	Collaborator
National Taiwan University Hospital

Country where clinical trial is conducted

Taiwan, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Scapular kinematics	Change of scapular kinematics immediately after fatigue task	10 minutes
Primary	Scapular muscles electromyography	Change of scapular muscles electromyography immediately after fatigue task	10 minutes