Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Exercise (3)
- Aging (2)
- Baroreflex (2)
- Humans (2)
- Muscle blood flow (2)
-
- Muscle sympathetic nerve activity (2)
- Muscle, Skeletal (2)
- Action potential detection (1)
- Active play (1)
- Adult (1)
- American Football (1)
- Animals (1)
- Antisaccade (1)
- Autonomic nervous system (1)
- Blood Pressure (1)
- Blood Pressure Determination (1)
- Blood pressure (1)
- Body Position (1)
- Brachial Artery (1)
- Breaks from sitting (1)
- Canadian Football (1)
- Cardiovascular risk factors (1)
- Catcher (1)
- Change-of-direction (1)
- Chemoreflex (1)
- Children (1)
- Cognition (1)
- Cognitive training (1)
- Community-dwelling older adults (1)
- Conditioning (1)
- Publication Type
Articles 1 - 18 of 18
Full-Text Articles in Kinesiology
Avery Brundage, Pan-American Games, And Entrenchment Of The Olympic Movement In Latin America, Doiara Silva Dos Santos
Avery Brundage, Pan-American Games, And Entrenchment Of The Olympic Movement In Latin America, Doiara Silva Dos Santos
Electronic Thesis and Dissertation Repository
To become firmly established, the Pan-American Games depended on the efforts of particular individuals. With Avery Brundage's attention to the Pan-American Games as the center of this analysis, this study documented the main events leading up to the inauguration of the Pan-American Games as well as their development and significance to Latin American countries in the mid-twentieth century. The research material was mainly drawn from primary sources, most importantly, those found in the Avery Brundage Collection at Western University. The study demonstrated that Brundage saw in the Pan-American Games not only a challenge, but an opportunity to promote the Modern …
Methods And Considerations For The Analysis And Standardization Of Assessing Muscle Sympathetic Nerve Activity In Humans., Daniel W White, J Kevin Shoemaker, Peter B Raven
Methods And Considerations For The Analysis And Standardization Of Assessing Muscle Sympathetic Nerve Activity In Humans., Daniel W White, J Kevin Shoemaker, Peter B Raven
Kinesiology Publications
The technique of microneurography and the assessment of muscle sympathetic nerve activity (MSNA) are used in laboratories throughout the world. The variables used to describe MSNA, and the criteria by which these variables are quantified from the integrated neurogram, vary among studies and laboratories and, therefore, can become confusing to those starting to learn the technique. Therefore, the purpose of this educational review is to discuss guidelines and standards for the assessment of sympathetic nervous activity through the collection and analysis of MSNA. This review will reiterate common practices in the collection of MSNA, but will also introduce considerations for …
A Comparative Analysis Of Softball Gloves: Catcher's Glove Yields Highest Peak Hand Pressure, Brittany M. Hicks
A Comparative Analysis Of Softball Gloves: Catcher's Glove Yields Highest Peak Hand Pressure, Brittany M. Hicks
Electronic Thesis and Dissertation Repository
Catchers commonly develop abnormal blood flow in the ulnar artery, digital ischemia in the index finger, and index finger hypertrophy as a result of continual trauma to the hand. The hand sustains peak pressures that are much greater than the recommended thresholds for repetitive tasks. The objective of this study was to measure the peak pressure on the hand when catching a softball and to determine which glove type (catcher’s glove, first baseman’s glove or fielder’s glove) is most effective at reducing the peak pressure on the hand. Pressure data was collected using Tekscan pressure sensors. Results indicate the hand …
The Effect Of A Combined Multiple-Modality Exercise Intervention On Sensorimotor Function In Community Dwelling Older Adults, With A Subjective Cognitive Complaint: The M4 Study (Multi-Modal; Mind Motor), Sam Titheridge
Electronic Thesis and Dissertation Repository
Aging is associated with the increased onset of diseases such as cognitive impairment, and ultimately dementia. Participants, 55+ years, with a self-reported cognitive complaint completed a 6-month exercise intervention. They were randomized to either a multiple modality exercise program (M2), consisting of aerobic, stretching and balancing exercises or a multiple modality plus mind motor program (M4), whereby a square stepping exercise was incorporated. Participants were assessed for reaction time (RT), movement time (MT) and % errors at baseline and at 6-months using an eye tracking 1000 system. Participants performed prosaccades and antisaccades (AS). AS RT was significantly quicker from baseline …
The Effects Of Fatigue On The Reactive Agility Test: Looking At The Difference Between Normal Game Play And The Hurry-Up Offense In Football Game Simulations, Kristine E. Walker
The Effects Of Fatigue On The Reactive Agility Test: Looking At The Difference Between Normal Game Play And The Hurry-Up Offense In Football Game Simulations, Kristine E. Walker
Electronic Thesis and Dissertation Repository
Purpose: The purpose of this study was to assess the effects of fatigue on performance of the Reactive Agility Test (RAT) by University Football players. This test assesses the athlete’s ability to change direction in response to a visual stimulus, somewhat like responding to the actions of an opponent in a game. Two fatiguing conditions were compared, simulations of normal game play and hurry-up offense in football. Methods: Following a warm-up and baseline RAT testing the athletes performed 10 high intensity, sprints on a specialized treadmill, with a 1:5 work to rest ratio to simulate regular game pace. This was …
Blood Flow And Muscle Oxygenation During Low, Moderate, And Maximal Sustained Isometric Contractions, Chris Mcneil, Matti D. Allen, Eric Olympico, J Kevin Shoemaker, Charles L. Rice
Blood Flow And Muscle Oxygenation During Low, Moderate, And Maximal Sustained Isometric Contractions, Chris Mcneil, Matti D. Allen, Eric Olympico, J Kevin Shoemaker, Charles L. Rice
Kinesiology Publications
Blood flow and muscle oxygenation during low, moderate, and maximal sustained isometric contractions. Am J Physiol Regul Integr Comp Physiol 309: R475–R481, 2015. First published June 17, 2015; doi:10.1152/ajpregu.00387.2014.—A reduction of blood flow to active muscle will precipitate fatigue, and sustained isometric contractions produce intramuscular and compartmental pressures that can limit flow. The present study explored how blood flow and muscle oxygenation respond to isometric contractions at low, moderate, and maximal intensities. Over two visits, 10 males (26 2 yr; means SD) performed 1-min dorsiflexion contractions at 30, 60, and 100% of maximal voluntary contraction (MVC) torque. Doppler ultrasound of …
Forebrain Neurocircuitry Associated With Human Reflex Cardiovascular Control., J Kevin Shoemaker, Ruma Goswami
Forebrain Neurocircuitry Associated With Human Reflex Cardiovascular Control., J Kevin Shoemaker, Ruma Goswami
Kinesiology Publications
Physiological homeostasis depends upon adequate integration and responsiveness of sensory information with the autonomic nervous system to affect rapid and effective adjustments in end organ control. Dysregulation of the autonomic nervous system leads to cardiovascular disability with consequences as severe as sudden death. The neural pathways involved in reflexive autonomic control are dependent upon brainstem nuclei but these receive modulatory inputs from higher centers in the midbrain and cortex. Neuroimaging technologies have allowed closer study of the cortical circuitry related to autonomic cardiovascular adjustments to many stressors in awake humans and have exposed many forebrain sites that associate strongly with …
Positional Differences In Reactive Hyperemia Provide Insight Into Initial Phase Of Exercise Hyperemia., Jeffrey L Jasperse, J Kevin Shoemaker, Eric J Gray, Philip S Clifford
Positional Differences In Reactive Hyperemia Provide Insight Into Initial Phase Of Exercise Hyperemia., Jeffrey L Jasperse, J Kevin Shoemaker, Eric J Gray, Philip S Clifford
Kinesiology Publications
Studies have reported a greater blood flow response to muscle contractions when the limb is below the heart compared with above the heart, and these results have been interpreted as evidence for a skeletal muscle pump contribution to exercise hyperemia. If limb position affects the blood flow response to other vascular challenges such as reactive hyperemia, this interpretation may not be correct. We hypothesized that the magnitude of reactive hyperemia would be greater with the limb below the heart. Brachial artery blood flow (Doppler ultrasound) and blood pressure (finger-cuff plethysmography) were measured in 10 healthy volunteers. Subjects lay supine with …
Factors Affecting Block Performance From The Omega Osb11 Starting Platform, Andrew Dragunas
Factors Affecting Block Performance From The Omega Osb11 Starting Platform, Andrew Dragunas
Electronic Thesis and Dissertation Repository
In 2009, the international governing body of swimming approved the use of the Omega OSB11 platform. It features a back foot kick plate that can be shifted into five positions. The purpose of this thesis is to identify set stance characteristics of the track start that may produce a faster start from the OSB11. The first project evaluated: optimal kick plate location, its relationship to segment lengths, and rear foot position as high and low on the kick plate. The swimmers demonstrated significantly greater horizontal take-off velocity and decreased time to 2 m with the rear foot in the high …
Evaluation Of Suspension Seats Under Multi-Axis Vibration Excitations - A Neural Net Model Approach To Seat Selection, Xiaoxu Ji
Electronic Thesis and Dissertation Repository
Whole-body vibration describes vibrations that are transferred from a supporting surface to the human body. Low back injury is a major health issue amongst heavy machine operators and seat selection is important for reducing vibration exposure. Modeling the vibration attenuation properties of seats is one approach for predicting the performance of seats in different vibration environments. An efficient neural network (NN) algorithm identified the vibration attenuation properties of five suspension seats that are commonly used in the Northern Ontario mining sector. Each of the NN seat models strongly predicted vertical seatpan r.m.s. accelerations from the chassis accelerations and a measure …
Distractor Processing In Identity Negative Priming Tasks, Ahmed Shuriye
Distractor Processing In Identity Negative Priming Tasks, Ahmed Shuriye
Electronic Thesis and Dissertation Repository
With identity negative priming (INP) designs, subjects respond on the basis of a target stimulus’ identity and trials are presented in pairs; first the ‘prime’ and then the ‘probe’; with the target and/or to-be-ignored distractor objects appearing on either trial. The latency-based INP phenomenon reflects the fact that probe trial target reactions are significantly slower when this target has just served as the prime distractor object, relative to when it was new. One explanation for the INP phenomenon is that the prime distractor event is inhibited and representations of this are stored so that they are retrieved when the probe …
Reducing Sedentary Behaviour In University Students Using A Text Message-Based Intervention, Emma Cotten
Reducing Sedentary Behaviour In University Students Using A Text Message-Based Intervention, Emma Cotten
Electronic Thesis and Dissertation Repository
Sedentary behaviour (SB) has been linked to many health problems (e.g., type 2 diabetes, heart disease). Interventions aimed at office workers, overweight and obese individuals have proven successful in reducing SB; however, no studies have examined university students. Text message-based interventions have succeeded to aid in smoking cessation and increase both physical activity and healthy eating, but have not been shown to reduce SB. Eighty-two university students were randomized into intervention (SB related text messages) or control (text messages unrelated to SB) groups. Participants received daily text messages and reported various SBs (i.e., breaks from sitting, standing, light and moderate …
The Effects Of A Multiple-Modality Mind-Motor Program On Vascular Outcomes In Community-Dwelling Older Adults With Subjective Cognitive Complaints, Amanda M. Deosaran
The Effects Of A Multiple-Modality Mind-Motor Program On Vascular Outcomes In Community-Dwelling Older Adults With Subjective Cognitive Complaints, Amanda M. Deosaran
Electronic Thesis and Dissertation Repository
Studies have found a link between cardiovascular risk factors (CVRFs) and Alzheimer’s disease however; the mechanism by which CVRFs increase the risk of cognitive decline is not fully understood. The current study attempts to improve CVRFs in order to enhance cognition in older adults. Primary outcomes include ambulatory and clinical resting systolic and diastolic blood pressure (SBP; DBP). In total, 89 community-dwelling older adults with subjective cognitive complaints were randomized to either a multiple-modality mind-motor (M4) exercise or a multiple-modality (M2) exercise only. Significance was found in nighttime peak SBP (6.55 mmHg, p=.04) between groups, with a decrease in M2 …
Sympathetic Neural Recruitment Strategies: Responses To Severe Chemoreflex And Baroreflex Stress, Mark B. Badrov, Charlotte W. Usselman, J Kevin Shoemaker
Sympathetic Neural Recruitment Strategies: Responses To Severe Chemoreflex And Baroreflex Stress, Mark B. Badrov, Charlotte W. Usselman, J Kevin Shoemaker
Kinesiology Publications
This study tested the hypothesis that neural coding patterns exist within the autonomic nervous system. We investigated sympathetic axonal recruitment strategies in humans during chemoreflex- and baroreflex-mediated sympathoexcitation using a novel action potential (AP) analysis technique. Muscle sympathetic nerve activity (microneurography) was collected in 11 young individuals (6 females) during baseline and two subsequent protocols: 1) severe chemoreflex stimulation (maximal end-inspiratory apnea following rebreathe), and 2) severe baroreceptor unloading (−80 mmHg lower body negative pressure; LBNP). When compared with each respective baseline, apnea and LBNP increased AP frequency and mean AP content per sympathetic burst (all P < 0.01). When APs were binned according to peak-to-peak amplitude (i.e., into “clusters”), total clusters detected increased during both apnea (Δ7 ± 5; P …
An Examination Of Children's Active Play Imagery, Danielle C. Tobin
An Examination Of Children's Active Play Imagery, Danielle C. Tobin
Electronic Thesis and Dissertation Repository
The general purpose of this dissertation was to examine children’s active play imagery using Self-Determination Theory (Deci & Ryan, 2002) as a theoretical basis. The research was comprised of three studies. Study 1examined how the three types of active play imagery (i.e., fun, capability, and social) were associated with the three basic psychological needs (i.e., autonomy, competence, and relatedness). A total of 253 children aged 7-14 years old completed both the Children’s Active Play Imagery Questionnaire (Cooke et al., 2014) and the Basic Need Satisfaction in Physical Activity (Gray et al., 2009). Capability imagery was found to be positively associated …
The Effects Of Short Work Versus Longer Work Periods Within Intermittent Exercise On Vo2 Kinetics, Muscle Deoxygenation And Energy System Contribution, Michael C. Mccrudden
The Effects Of Short Work Versus Longer Work Periods Within Intermittent Exercise On Vo2 Kinetics, Muscle Deoxygenation And Energy System Contribution, Michael C. Mccrudden
Electronic Thesis and Dissertation Repository
The purpose of this study was to investigate the kinetic response of oxygen uptake (V̇O2)and muscle deoxygenation (HHb) in males (24 yr±3, n = 10) to identical heavy intensity continuous (CONT), and intermittent work; 25 s (25 s work: 3 s recovery (20W)), and 10 s (10 s work: 3 s recovery (20W)), were compared. The τV̇O2 were similar in all conditions (CONT: 44.2 s±9; 25 s: 38.9 s±10; 10 s: 39.4 s±8, p > 0.05), whereas the HHb/ V̇O2 overshoot decreased across conditions (p < 0.05). The increased frequency of recovery periods slowed V̇O2p kinetics suggesting increased activity of the creatine kinase enzyme and increased …
Test-Retest Reliability Of Mune And Mup Analysis From Decomposition-Based Quantitative Electromyography For The Flexor Carpi Radialis Muscle, Saskia R. Knol
Test-Retest Reliability Of Mune And Mup Analysis From Decomposition-Based Quantitative Electromyography For The Flexor Carpi Radialis Muscle, Saskia R. Knol
Electronic Thesis and Dissertation Repository
The purpose of this study was to establish a set of representative data from healthy subjects and determine the intra-rater reliability of decomposition-enhanced spike triggered averaging (DE-STA) motor unit number estimation (MUNE) and quantitative motor unit potential (MUP) analysis from D-QEMG for the flexor carpi radialis (FCR) muscle. Twenty subjects aged 21-51 were studied (9 females, 11 males). Trials A and B assessed test-retest reliability for FCR when the wrist was flexed only. The effects of finger flexion during wrist flexion were assessed in trial C. Results found high reliability for maximum CMAP (ICC = 0.92), moderate reliability for mean …
Muscular Christian Edmonton: The Story Of The Edmonton Young Men's Christian Association 1898-1920, Courtney Hope Van Waas
Muscular Christian Edmonton: The Story Of The Edmonton Young Men's Christian Association 1898-1920, Courtney Hope Van Waas
Electronic Thesis and Dissertation Repository
From its initial conception as the EYMI in 1898 to its emergence as the Edmonton YMCA through 1920, the institution always had a distinct purpose. The absence of a Muscular Christian agenda in the EYMI, coupled with a purposive refocusing of programming within the YMCA towards what was directed towards the public interest, religion within this institution waned following World War I. Newspapers and executive minute notes demonstrate the EYMI focus on producing the next generation of respectable businessmen. The Edmonton YMCA attempted to fulfill the task of ‘saving’ young men by distracting them from social vices. As a result …