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Jayne M. Kalmar
Wilfrid Laurier University
18Publications
8H-index
235Citations
Publications 18
Newest
#1Duane C. Button (St. John's University)H-Index: 20
#2Jayne M. Kalmar (WLU: Wilfrid Laurier University)H-Index: 8
Spinal motoneurons (MN) exhibit exercise-dependent adaptations to increased activity, such as exercise and locomotion, as well as decreased activity associated with disuse, spinal cord injury, and ...
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#1Ryan C. A. Foley (UOIT: University of Ontario Institute of Technology)
#2Jayne M. Kalmar (WLU: Wilfrid Laurier University)H-Index: 8
Persistent inward current (PIC) plays a critical role in setting the gain of spinal motor neurons. In humans, most estimates of PIC are made from plantarflexor or dorsiflexor motor units in a seate...
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#1Jennifer M. Jakobi (UBC: University of British Columbia)H-Index: 17
#2Jerome A. Dempsey (UW: University of Wisconsin-Madison)H-Index: 71
Last.Jayne M. Kalmar (WLU: Wilfrid Laurier University)H-Index: 8
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This viewpoint is the result of a Horizon Round Table discussion of Exercise and Aging held during the 2017 Saltin International Graduate School in Exercise and Clinical Physiology in Gatineau, Que...
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#1Alexander Manta (McMaster University)H-Index: 3
#2Derek W. Stouth (McMaster University)H-Index: 3
Last.Vladimir Ljubicic (McMaster University)H-Index: 26
view all 8 authors...
3 CitationsSource
Over the last few decades, transcranial magnetic stimulation (TMS) has emerged as a conventional laboratory technique in human neurophysiological research. Exercise neuroscientists have used TMS to...
8 CitationsSource
#1Michael E. Cinelli (WLU: Wilfrid Laurier University)H-Index: 13
#2Kristen A Kaster (WLU: Wilfrid Laurier University)
Last.Jayne M. Kalmar (WLU: Wilfrid Laurier University)H-Index: 8
view all 3 authors...
Post-Concussion Syndrome (PCS) is the persistence of concussion symptoms (i.e., somatic, psychological and cognitive) beyond the normal 7-14 days of recovery. Balance control impairments have been revealed in recently concussed symptomatic and asymptomatic athletes. However, it is unknown whether individuals with PCS also express balance control impairments. The purpose of this study was to examine the effects of PCS on balance control during a single-support lower-limb reaching task. Ten indivi...
#1Simon A. Sharples (WLU: Wilfrid Laurier University)H-Index: 6
#2Jason A. Gould (WLU: Wilfrid Laurier University)H-Index: 1
Last.Jayne M. Kalmar (WLU: Wilfrid Laurier University)H-Index: 8
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The purpose of this study was to investigate cortical mechanisms upstream to the corticospinal motor neuron that may be associated with central fatigue and sense of effort during and after a fatigue task. We used two different isometric finger abduction protocols to examine the effects of muscle activation and fatigue the right first dorsal interosseous (FDI) of 12 participants. One protocol was intended to assess the effects of muscle activation with minimal fatigue (control) and the other was ...
6 CitationsSource
#1Michael S. Vandenberk (WLU: Wilfrid Laurier University)H-Index: 2
#2Jayne M. Kalmar (WLU: Wilfrid Laurier University)H-Index: 8
Persistent inward current (PIC) plays an important role in setting the input-output gain of motoneurons. In humans, these currents are estimated by calculating the difference between synaptic input at motor unit recruitment and derecruitment (ΔF) derived from paired motor unit recordings. The primary objective of this study was to use the relationship between reciprocal inhibition (RI) and PIC to estimate the contribution of PIC relative to other motoneuron properties that result in nonlinear mo...
12 CitationsSource
#1Kaley C. Powers (WLU: Wilfrid Laurier University)H-Index: 4
#2Michael E. Cinelli (WLU: Wilfrid Laurier University)H-Index: 13
Last.Jayne M. Kalmar (WLU: Wilfrid Laurier University)H-Index: 8
view all 3 authors...
AbstractPrimary objective: The purpose of this research was to assess cortical excitability, voluntary activation of muscle and force sensation beyond the initial highly symptomatic period post-concussion (1–4 weeks post-injury). It was hypothesized that reduced excitability of the motor cortex may impair muscle activation and alter perceptions of force and effort.Research design: Eight concussed varsity football players were age- and position-matched with eight healthy teammates to control for ...
32 CitationsSource
#1Kaley C. Powers (WLU: Wilfrid Laurier University)H-Index: 4
#2Jayne M. Kalmar (WLU: Wilfrid Laurier University)H-Index: 8
Last.Michael E. Cinelli (WLU: Wilfrid Laurier University)H-Index: 13
view all 3 authors...
Abstract Loss of balance control is one of the cardinal symptoms following a concussion; however, the ability to detect the duration of these balance impairments seems to largely depend on task type and complexity. Typical balance assessment tools are simplistic and do not challenge dynamic balance control. Changing direction represents an internal perturbation that challenges the balance control system. The purpose of this study was to examine the effects of a concussion on dynamic stability an...
10 CitationsSource
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