Muscle activity adapts to anti-gravity posture during pedalling in persons with post-stroke hemiplegia

Brain : a Journal of Neurology
D A BrownC A Dairaghi

Abstract

With hemiplegia following stroke, a person's movement response to anti-gravity posture often appears rigid and inflexible, exacerbating the motor dysfunction. A major determinant of pathological movement in anti-gravity postures is the failure to adapt muscle-activity patterns automatically to changes in posture. The aim of the present study was to determine whether the impaired motor performance observed when persons with hemiplegia pedal in a horizontal position is exacerbated at more vertical anti-gravity body orientations. Twelve healthy elderly subjects and 17 subjects with chronic (> 6 months) post-stroke hemiplegia participated in the study. Subjects pedalled a modified ergometer at different body orientations (from horizontal to vertical), maintaining the same workload, cadence, and hip and knee kinematics. Pedal reaction forces, and crank and pedal kinematics, were measured and then used to calculate the work done by each leg and their net positive and negative components. The EMG was recorded from four leg muscles (tibialis anterior, medial gastrocnemius, rectus femoris and biceps femoris). The main result from this study was that impaired plegic leg performance, as measured by net negative work done by the plegic leg...Continue Reading

Citations

Jul 12, 2002·Physiotherapy Research International : the Journal for Researchers and Clinicians in Physical Therapy·Valerie Pomeroy, Raymond Tallis
Apr 23, 2008·Experimental Brain Research·Sheila Schindler-IvensJon Wieser
Dec 29, 2000·Experimental Brain Research·E P Zehr, R Chua
Jan 7, 2010·European Journal of Neurology : the Official Journal of the European Federation of Neurological Societies·A-K WelmerD K Sommerfeld
Nov 4, 2004·Canadian Journal of Physiology and Pharmacology·E Paul ZehrAiko Kido Thompson
May 14, 2010·Journal of Neurophysiology·Shih-Chiao Tseng, Susanne M Morton
May 11, 2012·Journal of Neurophysiology·E Paul ZehrSandra R Hundza
Jun 4, 2004·Journal of Neurophysiology·Sheila Schindler-IvensJohn D Brooke
Apr 22, 2003·American Journal of Physical Medicine & Rehabilitation·Toshiyuki FujiwaraNaoichi Chino
Aug 28, 2015·Journal of Physical Therapy Science·Gui Bin Song, Eun Cho Park
Sep 29, 2011·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·E Paul Zehr, Pamela M Loadman
Dec 7, 2010·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Lynn M RogersJames W Stinear
May 12, 2009·Journal of Neuroscience Methods·Jay P MehtaSheila M Schindler-Ivens
Nov 25, 2011·International Journal of Stroke : Official Journal of the International Stroke Society·Nicola J HancockValerie Pomeroy
Dec 3, 2014·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·David BarbosaMaria Martins
Aug 12, 2005·Neurorehabilitation and Neural Repair·Steven A KautzStephanie A Studenski
Mar 20, 1998·Stroke; a Journal of Cerebral Circulation·D A Brown, S A Kautz
Aug 14, 2010·Stroke; a Journal of Cerebral Circulation·Peter P UrbanJörg Wissel
Jun 16, 2006·Journal of Neurophysiology·Gelsy Torres-OviedoLena H Ting
Jan 22, 2010·Journal of Neurophysiology·Allison HyngstromBrian D Schmit
Aug 13, 1999·Journal of Neurophysiology·C C Raasch, F E Zajac
Apr 3, 2019·Journal of Physical Therapy Science·Ernest Kwesi OforiOlajide Ayinla Olawale

❮ 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.