We have located links that may give you full text access.
Lumbar Hyperextension in Baseball Pitching: A Potential Cause of Spondylolysis.
Journal of Applied Biomechanics 2018 May 30
Symptomatic spondylolysis/spondylolisthesis is thought to be caused by repetitive lumbar extension. 8.9% of baseball pitchers that experience back pain will be diagnosed with spondylolysis. Therefore, this study aims to identify and quantify lumbar extension experienced during baseball pitching. It was hypothesized that young pitchers would exhibit less lumbar extension than older pitchers. 187 healthy, pitchers were divided into 3 age groups: youth, adolescent, and college. Kinematic data were collected at 250Hz using a 3D motion capture system. Lumbar motion was calculated as the difference between upper thoracic motion and pelvic motion over the pitching cycle. Lumbar "hyperextension" was defined as ≥ 20° past neutral. Collegiate pitchers had significantly greater lumbar extension compared to youth and adolescent pitchers at the point of maximum external rotation of the glenohumeral joint during the pitch cycle (-25 ± 13°, p = 0.039). For all age groups, lumbar hyperextension was present during the first 66% of the pitch cycle. Most pitchers spent 45% of pitch cycle in ≥ 30° of lumbar extension. Understanding that lumbar extension and hyperextension are a component of the complex, multiplanar motions of the spine associated with baseball pitching can potentially help in both the prevention and management of symptomatic spondylolysis/spondylolisthesis.
Full text links
Related Resources
Trending Papers
Heart failure with preserved ejection fraction: diagnosis, risk assessment, and treatment.Clinical Research in Cardiology : Official Journal of the German Cardiac Society 2024 April 12
Proximal versus distal diuretics in congestive heart failure.Nephrology, Dialysis, Transplantation 2024 Februrary 30
World Health Organization and International Consensus Classification of eosinophilic disorders: 2024 update on diagnosis, risk stratification, and management.American Journal of Hematology 2024 March 30
Efficacy and safety of pharmacotherapy in chronic insomnia: A review of clinical guidelines and case reports.Mental Health Clinician 2023 October
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app