PMID: 16630374Apr 25, 2006Paper

Effects of age and ACL reconstruction on quadriceps gamma loop function

Journal of Geriatric Physical Therapy
Michael S RichardsonMichael G Bemben

Abstract

Both aging and anterior cruciate ligament (ACL) reconstruction are associated with strength deficits, which can in turn influence performance of activities of daily living. Thus it is informative to understand mechanisms underlying strength deficits. Age-related declines in strength follow reductions in muscle fiber numbers and size, whereas strength deficits following ACL reconstruction may be caused by the loss of intraligamentous mechanoreceptors. A common link between these conditions is the gamma spindle system, or the gamma loop. Appropriately applied vibration can affect the gamma loop by causing disruption of afferent feedback to a muscle and result in decreased force capabilities. We investigated the effect of age and ACL reconstruction on gamma loop function. Maximal isometric strength (MVC) and electromyography (EMG) of the quadriceps were quantified before and after vibration stimulation of the infrapatellar tendon of 3 groups: young healthy (n=4; mean age=23.8 yrs), young ACL reconstructed (n=7; mean age=22.4 yrs), and older healthy (n=4; mean age=66.1 yrs) individuals. The quadriceps MVC, vastus lateralis EMG, vastus medialis EMG, and rectus femoris EMG declined significantly in the young healthy group following v...Continue Reading

References

Apr 1, 1990·The Journal of Physiology·L G BongiovanniL Stjernberg
Nov 1, 1986·The Journal of Physiology·K E HagbarthE U Wallin
Sep 1, 1969·Journal of the Neurological Sciences·B E TomlinsonJ J Rebeiz
Aug 1, 1984·European Journal of Clinical Investigation·A YoungM Crowe
May 1, 1984·The American Journal of Sports Medicine·W H BaugherA Joseph
May 1, 1982·Acta Physiologica Scandinavica·G GrimbyB Saltin
Nov 28, 2002·Scandinavian Journal of Medicine & Science in Sports·Y KonishiD Takeshita
Nov 25, 2003·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·Ronenn Roubenoff

❮ Previous
Next ❯

Citations

May 23, 2015·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·John GoetschiusJoseph M Hart
Aug 28, 2015·Journal of Physical Therapy Science·Halil Ibrahim CakarKemal Sıtkı Türker
Dec 4, 2009·Seminars in Arthritis and Rheumatism·David Andrew Rice, Peter John McNair
May 28, 2008·Clinics in Sports Medicine·Christopher D IngersollJoseph M Hart
Jul 17, 2008·Scandinavian Journal of Medicine & Science in Sports·T J HerdaJ T Cramer
Oct 17, 2015·Somatosensory & Motor Research·Zachary K Pope, Jason M DeFreitas
Feb 9, 2017·European Journal of Applied Physiology·Darryl J Cochrane
Nov 25, 2017·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Robin SouronGuillaume Y Millet
Feb 18, 2014·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Aaron J KrychDiane L Dahm
Jan 4, 2008·Journal of Geriatric Physical Therapy·Yu KonishiMina Konishi
Apr 11, 2019·Journal of Neurophysiology·Alejandra Barrera-CurielJason M DeFreitas
Jul 31, 2019·Sports Medicine and Arthroscopy Review·Michael S Patzkowski, Jeanne C Patzkowski
Aug 3, 2017·European Journal of Applied Physiology·Robin SouronThomas Lapole
Aug 12, 2016·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Jonathan D MillerEric M Mosier

❮ 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

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
Riann M PalmieriChristopher D Ingersoll
© 2022 Meta ULC. All rights reserved