Effects of shoulder external rotation exercises that use ultrasound imaging in adult baseball players

JRCT ID: jRCT1030230354

Registered date:22/09/2023

Basic Information

• Recruitment status: Recruiting
• Health condition(s) or Problem(s) studied: Shoulder Injuries
• Date of first enrollment: 19/09/2023
• Target sample size: 32
• Study type: Interventional
• Intervention(s): shoulder external rotation exercises that use ultrasound imaging feedback

Outcome(s)

• Primary Outcome: Kerlan-Jobe Orthopaedic Clinic Shoulder and Elbow Score (KJOC)

Secondary Outcome

1) Patient-based questionnaire (Japanese society for surgery of the hand version of the quick disability of the arm shoulder, and hand (Quick DASH-JSSH) questionnaire, Pitching performance score)
2) Physical function evaluation: joint range of motion (angle), muscle strength (Nm), and muscle activity (% maximal voluntary contraction)
3) Pitching performance evaluation: pitch speed and rotation rate, elbow valgus stress, and arm swing speed

Key inclusion & exclusion criteria

• Age minimum: >= 18age old
• Age maximum: <= 39age old
• Gender: Both

Include criteria

1) Persons aged 18 to 39 years who belong to a baseball club
2) Persons who practice or play games on two or more days a week
3) Persons who can perform external rotation exercises continuously for one month
4) Persons who freely provide informed consent prior to participation after the study is sufficiently explained to them

Exclude criteria

1) Persons who have undergone surgery for a pitching-related injury and have not returned to their original level of competition
2) Persons who are currently unable to pitch with full power due to pain during pitching
3) Persons with less than 1 year of experience
4) Persons who require pain management, including anti-inflammatory analgesics, when competing
5) Other persons who the investigator determines to be inappropriate as participants

Related Information

• Primary Sponsor: Kawabata Masashi