Browsing Kinesiology and Health Sciences by Issue Date
Now showing items 21-40 of 465
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Vascular Aging: Influences on cerebral blood flow and executive function
(University of Waterloo, 2007-09-17)An age-related decline in cerebral blood flow (CBF) is widely acknowledged. However, uncertainty exists as to whether this reduction is the result of a reduced metabolic demand (cerebral atrophy) or an impaired delivery ... -
EXPLORING RESPONSES OF OLDER ADULTS TO UNSOLICITED HELP WITH PHYSICAL TASKS: A SOCIAL COGNITIVE THEORY PERSPECTIVE
(University of Waterloo, 2007-09-19)Continually improving population health in the context of increased life expectancy challenges the assumption that aging invariably leads to significant physical decline. Currently, there is a perception that physical ... -
Using an interactive website to disseminate participatory ergonomics research findings: an exploratory study
(University of Waterloo, 2007-09-21)Introduction: Researchers traditionally present the results of their research in academic journals and through conference presentations. Typically, individuals working outside of academia do not have access to traditional ... -
Physiological demands and ventilatory requirements during simulated large structure firefighting tasks
(University of Waterloo, 2007-09-25)The ability to measure the physiological demands and air requirements during simulated firefighting tasks while wearing full personal protective ensemble (PPE) and positive pressure self-contained breathing apparatus (SCBA) ... -
The influence of body mass on posture, pressure distribution and discomfort during prolonged driving.
(University of Waterloo, 2007-09-27)Background: Currently, if traveling the posted speed limit, the typical commuter driver in the Toronto Metropolitan area will travel round trip upwards of 60 minutes a day to work (Heisz and LaRochelle-Cote, 2005). As ... -
The Influence of Q-Angle and Gender on the Stair-Climbing Kinetics and Kinematics of the Knee
(University of Waterloo, 2007-09-27)Background: Knee joint motion and quadriceps activity play a crucial role in all lower limb tasks, especially those which are highly dynamic and weight-bearing. Due to anatomical differences between men and women such as ... -
Acute Regulation of Na+-K+-ATPase Activity in Skeletal Muscles of Different Fibre Type Composition in Response to Insulin Exposure
(University of Waterloo, 2008-01-09)The Na+-K+-ATPase (pump) is a transmembrane, multi-subunit (α and β) protein that is expressed in all cells, and particularly in skeletal muscle cells. In one cycle, it pumps 3 Na+ ions out of the cell and 2 K+ ions into ... -
A psychophysical investigation of grip types with specific application to job rotation
(University of Waterloo, 2008-01-09)Job rotation is recommended to prevent musculoskeletal disorders (MSD). The premise is by involving different tissues a “working rest” for other tissues is created. The possible health benefits from this relief have not ... -
Modeling shoulder ligament contributions and their effects on muscle force predictions
(University of Waterloo, 2008-01-23)Mathematical musculoskeletal modeling and simulation provide a means for proactive injury prevention. To be effective, these models must physiologically replicate shoulder function. Although several muscle force prediction ... -
Examining the Neuromuscular and Mechanical Characteristics of the Abdominal Musculature and Connective Tissues: Implications for Stiffening the Lumbar Spine
(University of Waterloo, 2008-04-30)Research has uncovered an essential role of proper abdominal muscle function in ensuring the health and integrity of the lumbar spine. The anatomical arrangement of the abdominal musculature (rectus abdominis, external ... -
Hydrogen peroxide is vasoactive in the mesenteric arteries of spontaneously hypertensive rats
(University of Waterloo, 2008-05-22)It is well established that hypertension decreases endothelium-dependent vasomotor function, partially by excessive generation and reduced scavenging of reactive oxygen species (ROS). Nevertheless, at appropriate levels, ... -
Modulation of sensory processing during simultaneous bimodal stimulation: Effects of sensorimotor integration
(University of Waterloo, 2008-05-23)Illusions such as the McGurk (McGurk and MacDonald, 1976) and ventriloquist (Radeau and Bertelson, 1974) effects or visual capture sensorimotor deficits (Holmes et al., 2004) demonstrate that our perception of and interaction ... -
Axial twist loading of the spine: Modulators of injury mechanisms and the potential for pain generation.
(University of Waterloo, 2008-05-26)There are several reasons to research the effects of axial twist exposures and the resulting loading on the spine. The lack of consensus from the limited work that has previously examined the role of axial twist moments ... -
Electromyography Evaluation of Rotator Cuff Manual Muscle Tests
(University of Waterloo, 2008-07-09)Manual muscle tests (MMTs) are frequently used in clinical settings to evaluate a specific muscle’s function and strength in a position at which this muscle is believed to be most isolated from other synergists and ... -
Refining the relationship between the mechanical demands on the spine and injury mechanisms through improved estimates of load exposure and tissue tolerance
(University of Waterloo, 2008-07-09)The low back loading to which an individual is exposed has been linked to injury and the reporting of low back pain. Despite extensive research on the spine and workplace loading exposures, statistics indicate that efforts ... -
TIME VARYING GENDER AND PASSIVE TISSUE RESPONSES TO PROLONGED DRIVING
(University of Waterloo, 2008-08-15)Background: Prolonged sitting in an automobile seat may alter the passive tissue stiffness of the lumbar spine differentially in males and females. Gender specific ergonomic interventions may be indicated for the ... -
An Investigation of the Role of Dynamic Axial Torque on the Disc Herniation Mechanism
(University of Waterloo, 2008-08-19)Background: Disc herniations are common and have been demonstrated as one potential source of low back pain. To date epidemiological studies have found associations between lifting, lifting and twisting and twisting with ... -
The Effect of Acute Exercise on Femoral Artery Vasoconstriction: Involvement of Local Vascular Wall Renin-Angiotensin Systems
(University of Waterloo, 2008-09-02)During a single bout of aerobic exercise, blood flow is shunted to exercising tissues while blood flow is maintained or reduced to less metabolically active areas (i.e. splanchnic area and non-working muscles). Although ... -
Movement-induced motor cortical excitability changes of upper limb representations during voluntary contraction of the contralateral limb: A TMS investigation of interhemispheric interactions
(University of Waterloo, 2008-09-03)Humans possess the ability to generate an incredible degree of complex, highly skilled, and coordinated movements. Although much is known about the anatomical and physiological components of upper limb movement, the exact ... -
Neurophysiological mechanisms of motor cortical modulation associated with bimanual movement
(University of Waterloo, 2008-09-11)The neural correlates of bilateral upper limb movement are poorly understood. It has been proposed that interhemispheric pathways contribute to the modulation of motor cortical excitability during bimanual movements, ...