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High Thoracic Kyphosis and Backward Trunk Inclination Angles in the Single-Leg Standing Position Associate With Medial Elbow Injuries in Youth Baseball Players: A Cross-Sectional Study.
- Source :
-
Journal of Sport Rehabilitation . Jul2021, Vol. 30 Issue 5, p786-793. 8p. 1 Black and White Photograph, 1 Diagram, 6 Charts. - Publication Year :
- 2021
-
Abstract
- Context: Baseball pitching is a coordinated movement involving the spine. A previous study indicated that increased thoracic kyphosis angle in a standing position was a risk factor for medial elbow injuries in youth baseball players. However, spinal alignments in single-leg standing and their relationships with medial elbow injuries, scapular alignment, or hip joint range of motion are unclear. Objective: To examine the difference in spinal alignment between standing and single-leg standing positions in youth baseball players and analyze their relationship with elbow injuries, scapular alignment, or hip joint range of motion. Design: Cross-sectional study. Setting: University laboratory. Participants: There were 51 youth baseball players with medial epicondylar fragmentation (medial elbow injury group) and 102 healthy youth baseball players (control group). Main Outcome Measures: Thoracic kyphosis, lumbar lordosis, and trunk inclination angles during standing and single-leg standing, forward scapular posture, and hip joint range of motion. Results: In the single-leg standing position, the thoracic kyphosis and backward trunk inclination angles were significantly higher in the medial elbow injury group than in the control group (P =.016 and P =.046, respectively). In the standing position, no significant difference was observed between both groups. The thoracic kyphosis angle in single-leg standing was positively correlated with the bilateral forward scapular posture in the medial elbow injury (P =.008 and P <.001 on the throwing and nonthrowing sides, respectively) and control (P =.010 and P =.032 on the throwing and nonthrowing sides, respectively) groups. Conclusions: High thoracic kyphosis and backward trunk inclination angles are characteristics during single-leg standing in youth baseball players with medial elbow injuries. Spinal alignment measurement in single-leg standing may be useful for identifying youth baseball players who are at risk for sustaining medial elbow injury. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BASEBALL
*ELBOW injuries
*RANGE of motion of joints
*CONFIDENCE intervals
*POSTURAL balance
*CROSS-sectional method
*SPORTS injuries
*KYPHOSIS
*T-test (Statistics)
*BASEBALL injuries
*DESCRIPTIVE statistics
*CHI-squared test
*DATA analysis software
*ODDS ratio
*LOGISTIC regression analysis
*THORACIC vertebrae
Subjects
Details
- Language :
- English
- ISSN :
- 10566716
- Volume :
- 30
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Sport Rehabilitation
- Publication Type :
- Academic Journal
- Accession number :
- 151085977
- Full Text :
- https://doi.org/10.1123/jsr.2020-0155