Search results for: Kylie J. Tucker

Items from 1 to 13 out of 13 results

article

Perceived task complexity of trunk stability exercises

Megan McPhee, Kylie J. Tucker, Alan Wan, David A. MacDonald

Musculoskeletal Science and Practice > 2017 > 27 > C > 57-63

Perceived task complexity can impact participation in an exercise programme and the level of skill acquisition resulting from participation. Although trunk stability exercises are commonly included in the management of people with low back pain, potential differences in perceived task complexity between those exercises have not been investigated previously.To investigate the perceived task complexity...

article

Experimental pain has a greater effect on single motor unit discharge during force-control than position-control tasks

Peter C. Poortvliet, Kylie J. Tucker, Paul W. Hodges

Clinical Neurophysiology > 2015 > 126 > 7 > 1378-1386

When matching target force during pain, single motor unit (SMU) discharge is modified in a manner thought to redistribute load in painful tissue. This adaptation might not be appropriate when maintaining joint posture against an external load. We compared changes in SMU discharge rate of knee extensor muscles in a force-control and a position-control task during pain.Thirteen healthy adults (31±6years)...

article

Cortical activity differs between position- and force-control knee extension tasks

Peter C. Poortvliet, Kylie J. Tucker, Simon Finnigan, Dion Scott, more

Experimental Brain Research > 2015 > 233 > 12 > 3447-3457

Neural control differs between position- and force-control tasks as evident from divergent effects of fatigue and pain. Unlike force-control tasks, position-control tasks focus on a postural goal to maintain a joint angle. Cortical involvement is suggested to be less during postural control, but whether this differs between position- and force-control paradigms remains unclear. Coherence estimates...

article

Does movement variability increase or decrease when a simple wrist task is performed during acute wrist extensor muscle pain?

Michael J. G. Bergin, Kylie J. Tucker, Bill Vicenzino, Wolbert Hoorn, more

European Journal of Applied Physiology > 2014 > 114 > 2 > 385-393

Purpose The goal of complex tasks can be maintained despite variability in the movements of the multiple body segments involved in the task (VAR_elements). This variability increases in acute pain and may enable the nervous system to search for less painful/injurious movement options. It is unclear whether VAR_elements increases when pain challenges simple tasks with fewer movement options, yet maintain...

article

Effect of pain location on spatial reorganisation of muscle activity

François Hug, Paul W. Hodges, Kylie J. Tucker

Journal of Electromyography and Kinesiology > 2013 > 23 > 6 > 1413-1420

We aimed to determine whether the changes in muscle activity (in terms of both gross electromyography (EMG) and motor unit (MU) discharge characteristics) observed during pain are spatially organized with respect to pain location within a muscle which is the main contributor of the task.Surface and fine-wire EMG was recorded during matched low-force isometric plantarflexion from soleus (from four...

article

Changes in constraint of proximal segments effects time to task failure and activity of proximal muscles in knee position-control tasks

Peter C. Poortvliet, Kylie J. Tucker, Paul W. Hodges

Clinical Neurophysiology > 2013 > 124 > 4 > 732-739

Maintenance of a limb position against external load (position-control) fails earlier (time to task failure: TTF) than maintenance of identical force against rigid restraint (force-control). Although possibly explained by physiological differences between contractions, we investigated whether less constraint of movements in other planes and proximal segments (commonly less in position-control tasks)...

article

The effect of pain on training-induced plasticity of the corticomotor system

Damian Ingham, Kylie J. Tucker, Henry Tsao, Paul W. Hodges

European Journal of Pain > 2011 > 15 > 10 > 1028-1034

Pain is thought to interfere with training-induced plasticity of corticomotor pathways. Although this implies direct interference with plastic processes, it may be explained by compromised performance in the training task during pain. Repeated finger movements can induce plasticity and change the amplitude/direction of acceleration of finger movement evoked by transcranial magnetic stimulation (TMS)...

article

Changes in motor unit recruitment strategy during pain alters force direction

Kylie J. Tucker, Paul W. Hodges

European Journal of Pain > 2010 > 14 > 9 > 932-938

Motor unit (MU) recruitment is altered (decreased discharge rate and cessation of discharge in some units, and recruitment of new units) in force-matched contractions during pain compared to contractions performed before pain. As MU’s within a motoneurone pool have different force direction properties we hypothesised that altered MU recruitment during experimental knee pain would change the force...

article

Experimentally induced low back pain from hypertonic saline injections into lumbar interspinous ligament and erector spinae muscle

Henry Tsao, Kylie J. Tucker, Michel W. Coppieters, Paul W. Hodges

Pain > 2010 > 150 > 1 > 167-172

Injection of hypertonic saline into back muscles or ligaments can induce acute low back pain (LBP). However, no study has systematically investigated pain characteristics from these structures. Further, induced muscle pain can change with stretching and contraction, which is problematic for studies into the effect of pain on sensorimotor control. However, it is unclear whether this occurs with experimental...

article

Motoneurone recruitment is altered with pain induced in non-muscular tissue

Kylie J. Tucker, Paul W. Hodges

Pain > 2009 > 141 > 1-2 > 151-155

Motoneurone discharge rate is reduced despite the maintenance of force when pain is induced via injection of hypertonic saline into muscle. Two aspects require consideration. First, hypertonic saline may have direct effects on axons other than small diameter pain fibres including the motoneurones that innervate the painful muscle. Second, it is unclear how force is maintained, when motoneurone discharge...

article

The role of periodontal mechanoreceptors in mastication

Kemal S. Türker, Paul F. Sowman, Meltem Tuncer, Kylie J. Tucker, more

Archives of Oral Biology > 2007 > 52 > 4 > 361-364

The aim of this review is to discuss what is known about the reflex control of the human masticatory system by the periodontal mechanoreceptors and to put forward a method for standardised investigation. To deliver mechanical stimulus in a reproducible way, the following precautions are suggested: the stimulus should be brought into secure contact with the area of stimulation, and slack between the...

article

Influence of tooth clench on the soleus H-reflex

Meltem Tuncer, Kylie J. Tucker, Kemal S. Türker

Archives of Oral Biology > 2007 > 52 > 4 > 374-376

The Hoffmann (H) reflex is elicited by electrical stimulation of a mixed nerve and is used to measure the excitability of the spindle–motoneuron synapse. Recent investigations have indicated a positive correlation between increases in bite force and H-reflex facilitation. However, these investigations did not examine the H-reflex in detail or the possible role of periodontal mechanoreceptors (PMRs)...

article

A review of the H-reflex and M-wave in the human triceps surae

Kylie J. Tucker, Meltem Tuncer, Kemal S. Türker

Human Movement Science > 2005 > 24 > 5-6 > 667-688

The soleus is the most commonly used muscle for H-reflex studies in humans, while limited comparable data have been produced from the gastrocnemii muscles. This article reviews the fundamental differences between the structure and function of the human soleus and gastrocnemii muscles, including recent data published about their complex innervation zones. Protocols for eliciting, recording, and assessing...

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