Lumbopelvic Control in Baseball Batting

Sponsor

National Cheng-Kung University Hospital (Other)

Overall Status

Recruiting

CT.gov ID

NCT04549519

Collaborator

(none)

Enrollment

Location

16.5

Anticipated Duration (Months)

3.6

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

Baseball batting is important to winning the games. Baseball batting is achieved by proximal-to-distal sequencing of body movements and controlled by the neuromuscular system. Poor lumbopelvic control could influence production and transfer of energy in the kinetic chain. This study aims to investigate the impact of lumbopelvic control in hitting mechanics and bat swing velocity in high school baseball players.

Condition or Disease	Intervention/Treatment	Phase
Athletes	Other: No intervention

Study Design

Study Type:

Observational

Anticipated Enrollment :

60 participants

Observational Model:

Other

Time Perspective:

Cross-Sectional

Official Title:

Influence of Lumbopelvic Control on Batting Mechanics and Bat-swing Velocity in Baseball Players

Actual Study Start Date :

Aug 17, 2020

Anticipated Primary Completion Date :

Dec 31, 2021

Anticipated Study Completion Date :

Dec 31, 2021

Arms and Interventions

Arm	Intervention/Treatment
Stable group Participants display knee valgus less or equal to 15° at 45° knee flexion in the descending phase of the squat on both legs	Other: No intervention No intervention / Compare the difference in batting mechanics and bat-swing velocity in baseball players with good and poor lumbopelvic control
Unstable group Participants display knee valgus greater than 15° at 45° knee flexion in the descending phase of the squat on one leg or both legs	Other: No intervention No intervention / Compare the difference in batting mechanics and bat-swing velocity in baseball players with good and poor lumbopelvic control

Arm

Intervention/Treatment

Stable group

Participants display knee valgus less or equal to 15° at 45° knee flexion in the descending phase of the squat on both legs

Other: No intervention

No intervention / Compare the difference in batting mechanics and bat-swing velocity in baseball players with good and poor lumbopelvic control

Unstable group

Participants display knee valgus greater than 15° at 45° knee flexion in the descending phase of the squat on one leg or both legs

Other: No intervention

No intervention / Compare the difference in batting mechanics and bat-swing velocity in baseball players with good and poor lumbopelvic control

Outcome Measures

Primary Outcome Measures

Ratio of angular displacement of lumbar spine and hip joint [1 week after enrolled]
Angular displacement of lumbar spine divided by angular displacement of hip joint
Bat-swing velocity [1 week after enrolled]
Maximal bat swing velocity during baseball batting
Ratio of angular displacement of thoracic spine and lumbar spine [1 week after enrolled]
Angular displacement of thoracic spine divided by angular displacement of lumbar spine
Timing of maximal angular velocity of hip joint [1 week after enrolled]
The time point where the hip joint reaches its maximal angular velocity over the batting phase
Timing of maximal angular velocity of lumbar joint [1 week after enrolled]
The time point where the lumbar joint reaches its maximal angular velocity over the batting phase
Timing of maximal angular velocity of thoracic joint [1 week after enrolled]
The time point where the thoracic joint reaches its maximal angular velocity over the batting phase

Eligibility Criteria

Criteria

Ages Eligible for Study:

17 Years and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

Sport specialization in baseball batting
Active players on college baseball teams

Exclusion Criteria:

History of surgery in the lumbar area
Severe musculoskeletal or neurological symptoms that interfere with participation in competition, training and test

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	National Cheng Kung University	Tainan		Taiwan	701

Sponsors and Collaborators

National Cheng-Kung University Hospital

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

Responsible Party:

Yi Liang Kuo, Assistant Professor, National Cheng Kung University

ClinicalTrials.gov Identifier:

NCT04549519

Other Study ID Numbers:

A-ER-109-197

First Posted:

Sep 16, 2020

Last Update Posted:

Jan 19, 2021

Last Verified:

Jan 1, 2021

Individual Participant Data (IPD) Sharing Statement:

Undecided

Plan to Share IPD:

Undecided

Studies a U.S. FDA-regulated Drug Product:

Studies a U.S. FDA-regulated Device Product:

Product Manufactured in and Exported from the U.S.:

Keywords provided by Yi Liang Kuo, Assistant Professor, National Cheng Kung University

Batting mechanics

Bat-swing velocity

Lumbopelvic control

Study Results

No Results Posted as of Jan 19, 2021