Inverse dynamics analysis of youth pitching arm kinetics using body composition imaging

Sports Biomechanics
Jay A SternerStephen M Klisch

Abstract

This study's objectives were to: (1) assess whether dual energy X-ray absorptiometry (DXA)-mass inverse dynamics (ID) alters predictions of youth pitching arm kinetics and (2) investigate correlations between kinetics and body composition. Eighteen 10- to 11-year-olds pitched 10 fastballs. DXA scans were conducted to obtain participant-specific upper arm, forearm, and hand masses. Pitching arm segment masses and kinetics calculated with scaled and DXA masses were compared with paired t-tests and correlations were investigated with linear regression. Hand (p < 0.001) and upper arm (p < 0.001) DXA masses were greater, while forearm (p < 0.001) DXA masses were lesser, than their scaled masses. Shoulder compressive force (p < 0.001), internal rotation torque (p < 0.001), and horizontal adduction torque (p = 0.002) increased when using DXA masses. Shoulder compressive force correlated with body mass (p < 0.001) and body mass index (BMI; p = 0.002) and elbow varus torque correlated with body mass (p < 0.05). The main conclusions were that (1) using participant-specific mass ratios leads to different predictions of injury-related pitching arm kinetics and, thus, may improve our understanding of injury risk factors; and (2) pitching ar...Continue Reading

References

Jan 1, 1986·Journal of Biomechanics·R K Jensen
Mar 1, 1995·The American Journal of Sports Medicine·G S FleisigR F Escamilla
Sep 1, 1996·Journal of Biomechanics·P de Leva
Nov 24, 1999·Journal of Biomechanics·G S FleisigJ R Andrews
Nov 2, 2001·Medicine and Science in Sports and Exercise·S LymanJ M Roseman
Dec 6, 2001·The American Journal of Sports Medicine·J R AndrewsN Zheng
Apr 28, 2004·Journal of Shoulder and Elbow Surgery·Michelle B SabickRichard J Hawkins
Sep 16, 2009·Pediatrics·David S Freedman, Bettylou Sherry
Apr 20, 2010·The American Journal of Sports Medicine·Adam W AnzRichard J Hawkins
Sep 2, 2011·Pediatric Exercise Science·John C GarnerM Allison Ford
Sep 28, 2012·Sports Health·Glenn S Fleisig, James R Andrews
Mar 15, 2014·The American Journal of Sports Medicine·Jingzhen YangJohn P Albright
Oct 5, 2014·Annals of Biomedical Engineering·James H BuffiWendy M Murray
Sep 28, 2016·Obesity Research & Clinical Practice·David E ConroyMercedes R Carnethon
Oct 3, 2017·The American Journal of Sports Medicine·Glenn S FleisigJeffrey R Dugas
Apr 25, 2018·Orthopaedic Journal of Sports Medicine·Jim D DarkeStephen M Klisch

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Clinical Orthopaedics and Related Research
H S TullosJ W King
JAMA : the Journal of the American Medical Association
H S Tullos, J W King
© 2021 Meta ULC. All rights reserved