Properties of Paraspinal Muscles in Japanese High School Baseball Players With Terminal-Stage Lumbar Spondylolysis

PM&R ◽  
2017 ◽  
Vol 10 (2) ◽  
pp. 175-182
Author(s):  
Hiroyuki Tsuboi ◽  
Yukihide Nishimura ◽  
Takeshi Sakata ◽  
Hideaki Tanina ◽  
Hideki Arakawa ◽  
...  
Keyword(s):  
High School ◽  
Paraspinal Muscles ◽  
Baseball Players ◽  
Terminal Stage ◽  
Lumbar Spondylolysis

scholarly journals Acute Effects of Doorway Stretch on the Glenohumeral Rotational Range of Motion and Scapular Position in High-School Baseball Players

2021 ◽  
Author(s):  
Takashi Higuchi ◽  
Yuichi Nakao ◽  
Yasuaki Tanaka ◽  
Masashi Sadakiyo ◽  
Koki Hamada ◽  
...  
Keyword(s):  
High School ◽  
Range Of Motion ◽  
Acute Effects ◽  
Baseball Players

scholarly journals Incidence of Injuries in High School Softball and Baseball Players

2011 ◽  
Vol 46 (6) ◽  
pp. 648-654 ◽  
Author(s):  
Ellen Shanley ◽  
Mitchell J. Rauh ◽  
Lori A. Michener ◽  
Todd S. Ellenbecker
Keyword(s):  
High School ◽  
South Carolina ◽  
High Schools ◽  
Upper Extremity ◽  
Injury Rate ◽  
Baseball Players ◽  
Injury Rates ◽  
School Sports ◽  
Initial Injury ◽  
Subsequent Injury

Context: Participation in high school sports has grown 16.1% over the last decade, but few studies have compared the overall injury risks in girls' softball and boys' baseball. Objective: To examine the incidence of injury in high school softball and baseball players. Design: Cohort study. Setting: Greenville, South Carolina, high schools. Patients or Other Participants: Softball and baseball players (n = 247) from 11 high schools. Main Outcome Measure(s): Injury rates, locations, types; initial or subsequent injury; practice or game setting; positions played; seasonal trends. Results: The overall incidence injury rate was 4.5/1000 athlete-exposures (AEs), with more injuries overall in softball players (5.6/1000 AEs) than in baseball players (4.0/1000 AEs). Baseball players had a higher initial injury rate (75.9/1000 AEs) than softball players (66.4/1000 AEs): rate ratio (RR) = 0.88, 95% confidence interval (CI) = 0.4, 1.7. The initial injury rate was higher than the subsequent injury rate for the overall sample (P < .0001) and for softball (P < .0001) and baseball (P < .001) players. For both sports, the injury rate during games (4.6/1000 AEs) was similar to that during practices (4.1/1000 AEs), RR = 1.22, 95% CI = 0.7, 2.2. Softball players were more likely to be injured in a game than were baseball players (RR = 1.92, 95% CI = 0.8, 4.3). Most injuries (77%) were mild (3.5/1000 AEs). The upper extremity accounted for the highest proportion of injuries (63.3%). The incidence of injury for pitchers was 37.3% and for position players was 15.3%. The rate of injury was highest during the first month of the season (7.96/1000 AEs). Conclusions: The incidence of injury was low for both softball and baseball. Most injuries were minor and affected the upper extremity. The injury rates were highest in the first month of the season, so prevention strategies should be focused on minimizing injuries and monitoring players early in the season.

Effect of lumbar lordosis angle in adolescent baseball players on the development of lumbar spondylolysis v1

2021 ◽  
Author(s):  
Yuki Onoda ◽  
Takashi Kitagawa
Keyword(s):  
Lumbar Lordosis ◽  
Bony Union ◽  
Exclusion Criteria ◽  
Baseball Players ◽  
Explanatory Variables ◽  
Lumbar Spondylolysis ◽  
High Prevalence ◽  
Vertebral Arch ◽  
Objective Variable ◽  
Sports Activities

AbstractBackground: Lumbar spondylolysis is a stress fracture of the lumbar vertebral arch that occurs frequently in adolescents. Lumbar spondylolysis has a high prevalence in athletes, especially baseball players. When lumbar spondylolysis occurs, restriction of sports activities is inevitable until the bony union is achieved. Therefore, prevention of the onset of lumbar spondylolysis is necessary, and it is necessary to elucidate the risk factors that influence the onset of the disease. An increase in lumbar lordosis angle may influence the development of lumbar spondylolysis because the lumbar lordosis angle increases the compressive stress in the vertebral arch. However, there are no reports on the effect of lumbar lordosis angle and the development of lumbar spondylolysis in adolescent baseball players. Therefore, the purpose of this study was to investigate the effect of lumbar lordosis angle on the development of lumbar spondylolysis in adolescent baseball players. METHODS: Eligible patients were those who visited the orthopedic clinic from January 1, 2018, to October 31, 2021. The selection criteria were male baseball players aged 11-18 years who visited the clinic, and the exclusion criteria were those whose superior endplate of L1 and superior endplate of S1 could not be identified in the MRI images. The existence of development of lumbar spondylolysis, lumbar lordosis angle, age, and pitching experience of the above patients will be assessed based on electronic medical records and imaging findings. Statistical analysis was performed using logistic regression analysis, with the objective variable being the existence of lumbar spondylolysis and the explanatory variables being the lumbar lordosis angle, age, and previous pitching experience.Discussion: This study examines the effect of the lumbar lordosis angle on the development of lumbar spondylolysis in adolescent baseball players. An increase in lumbar lordosis angle may influence the development of lumbar spondylolysis and may be a risk factor for the development of lumbar spondylolysis.

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