Clinical trial NCT06704529: Cortical Processing of Proprioception Related to Pitching Performance in Baseball Players With Glenohumeral Internal Rotation Deficit
Official title: Cortical Processing of Proprioception Related to Pitching Performance in Baseball Players With Glenohumeral Internal Rotation Deficit
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Glenohumeral Internal Rotation Deficit
Keywords: proprioception
baseball
pitching performance
Lead sponsor: National Taiwan University Hospital
Sponsor class: OTHER
Collaborators: name: Ministry of Science and Technology, Taiwan
First posted: 2024-11-26
Enrollment: 60
Sex: ALL
Minimum age (years): 15
Maximum age (years): 40
Standard ages: CHILD
ADULT
Accepts healthy volunteers: yes
Observational model: COHORT
Time perspective: CROSS_SECTIONAL
Sampling method: PROBABILITY_SAMPLE
Study population: GIRD is defined as 20° less GH IR ROM in the dominant shoulder compared to the non-dominant shoulder. Players without GIRD will be recruited to match the characteristics and sports involvement data (age ±3 years, right-handed or left-handed, pitcher or fielder, practice time \>10 hours/week or \<10 hours/week, baseball experience \>3 years or \<3 years) of the GIRD players.

Brief summary: The current study aims to characterize the cortical activity and proprioceptive acuity in baseball players with glenohumeral internal rotation deficit (GIRD). Additionally, the correlations between cortical activity, proprioceptive acuity, and pitching performance will be examined. The evaluation of proprioception will be conducted using the active joint reposition sense of the shoulder. Simultaneously, the investigators will record cortical activity by electroencephalography (EEG). To represent pitching performance, the investigators will collect ball velocity and pitching accuracy. This will help the investigators understand the process of proprioception in the central nervous system, as well as factors associated with pitching performance in baseball players with GIRD.


Eligibility criteria: Inclusion Criteria:

* playing baseball for at least one year
* still active in training or competition
* frequency of training or games should be at least 3 hours per week

Exclusion Criteria:

* current dominant upper extremities pain
* a history of upper extremities surgical interventions or fractures or dislocation or degenerative joint disease
* cervical radiculopathy within 6 months
* lower extremities injury or surgery within the current 6 months
* Visual analog scale (VAS) \> 5 during movement in the experiment

Primary outcomes:
measure: Active joint reposition test
timeFrame: baseline
measure: Pitching performance
timeFrame: baseline
Secondary outcomes:
measure: Shoulder range of motion
timeFrame: baseline
measure: Humeral retrotorsion
timeFrame: baseline
measure: Acromiohumeral distance
timeFrame: baseline
measure: Rotator cuff thickness
timeFrame: baseline
measure: Posterior capsule thickness
timeFrame: baseline
measure: Kerlan-Jobe Orthopaedic Clinic Shoulder and Elbow score (KJOC)
timeFrame: baseline
measure: Posterior capsule elasticity
timeFrame: baseline
Other outcomes:
Locations:
city: Taipei
country: Taiwan
facility: Institute of Physical Therapy, National Taiwan University
Study officials:
References:
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