Effects of Ai Chi on Scapular Muscle Activation in Overhead Athletes With Scapular Dyskinesis

Muscle Weakness Clinical Trial

Official title:

Effects of Ai Chi on Scapular Muscle Activation in Overhead Athletes With Scapular Dyskinesis

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT05714163
• Other study ID #: 202208053RINA
• Status: Active, not recruiting
• Start date: October 16, 2022
• Est. completion date: July 31, 2023

Study information

• Verified date: January 2023
• Source: National Taiwan University Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Scapular dyskinesis (SD) is common in overhead athletes and negatively influence the athletes' performance, increasing the risk of shoulder injury. The kinetic chain (KC) exercises for SD rehabilitation that emphasize importance of core strength and scapula stability during skillful performance. Ai Chi, the aquatic exercises performed in functional positions, which are adequate for power transfer of KC. This study will investigate the effect of KC-based water exercises, Ai Chi, on scapular muscles in overhead athletes with SD.

Description:

The purpose of this study is to investigate muscle activations of the upper trapezius (UT), lower trapezius (LT), serratus anterior (SA), latissimus dorsi (LD), and muscle balance ratios of UT/LT, UT/SA I in overhead athletes with SD via KC-based exercise in water and on land. KC-based exercises including the movement patterns of Ai Chi which consist of shoulder flexion/ extension, horizontal abduction/ adduction, internal and external rotation, scapular protraction/retraction combined with spinal rotation.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 25
• Est. completion date: July 31, 2023
• Est. primary completion date: July 31, 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 20 Years to 99 Years

Eligibility

Inclusion Criteria:

• The participants are overhead athletes with scapular dyskinesis (SD) who played overhead sports activities at least 3 hours/week.

Exclusion Criteria:

• the individuals who have shoulder/neck pain in recent 3 months (VAS >7/10)
• severe shoulder trauma (the collision shoulder, shoulder sprains or strains)
• severe scoliosis (Cobb angle > 25 degrees)
• surgery of upper extremity (the shoulder, cervical spine and elbow) or cervical spine
• peripheral nerve injury or neurological disease (impaired sensation or motor function:

numbness, tingle, muscle weakness)

• body mass index (BMI) >25
• infectious disease (upper respiratory tract infection, skin infection, etc.)

Related Conditions & MeSH terms

• Athletic Injuries
• Cumulative Trauma Disorders
• Dyskinesias
• Muscle Weakness
• Overuse Injury
• Scapular Dyskinesis
• Wounds and Injuries

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	Percentage of maximal voluntary isometric contraction of upper trapezius (UT), lower trapezius (LT), serratus anterior (SA), latissimus dorsi (LD)	The muscle activity of UT, LT, SA and LD of the dominant hand will be recorded for 3 trials of each exercises with 3-seconds concentric phase and 3-seconds eccentric phase. There is a 3-second rest between trails and one-minute rest between exercises.	Through study completion, an average of 10 months
Secondary	Muscle balance ratio of UT/SA	The muscle balance ratio will be calculated to represent the conditions of these force couples in scapular region.	Through study completion, an average of 10 months
Secondary	Muscle balance ratio of UT/LT	The muscle balance ratio will be calculated to represent the conditions of these force couples in scapular region.	Through study completion, an average of 10 months