Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- ETD (17)
- Exercise (9)
- Biomechanics (8)
- Daniel Felix Ritchie School of Engineering and Computer Science (8)
- Physical activity (8)
-
- Mechanical and Materials Engineering (7)
- Balance (6)
- Concussion (6)
- Fatigue (6)
- Footwear (6)
- Strength (6)
- Perceived exertion (5)
- Resistance training (5)
- Kinematics (4)
- Resistance Training (4)
- Running (4)
- Athlete (3)
- Athlete monitoring (3)
- Back squat (3)
- Cardiovascular disease (3)
- Coping (3)
- Ergonomics (3)
- Fitness (3)
- GPS (3)
- Gait (3)
- Motivation (3)
- Obesity (3)
- Performance (3)
- Power (3)
- Recovery (3)
Articles 31 - 60 of 214
Full-Text Articles in Life Sciences
Characterizing Endothelial Notch1 Release In Response To Changes In Vascular Wall Shear Stress, Matthew Indiana Badour
Characterizing Endothelial Notch1 Release In Response To Changes In Vascular Wall Shear Stress, Matthew Indiana Badour
Electronic Theses and Dissertations
Murine and cell culture models have identified Notch1 as a novel endothelial mechanosensor that may exert a protective role for vascular adjustments in response to changes in vascular wall shear stress. However, in vivo studies in humans are lacking. Accordingly, we sought to characterize the concentrations of Notch1 extracellular domain (ECD) prior to, during, and following 20-min of altered shear stress in the brachial artery of ten young and healthy adults (6M/4F). Alterations in shear were induced by placing a pneumatic cuff inflated to 220mmHg around the left wrist. Cuffs were also placed below the axilla of both arms and …
Effects Of Various Golf Bag Loading Strategies On Perceived Exertion And Vertical Jump Performance, Austen Arnold
Effects Of Various Golf Bag Loading Strategies On Perceived Exertion And Vertical Jump Performance, Austen Arnold
Electronic Theses and Dissertations
INTRODUCTION: The sport of golf is increasing in popularity among both novice and skilled players alike. A round of golf necessitates players to cope with a range of physically demanding movement patterns. At the collegiate level, golfers must transport their clubs by loading them onto the body. Previous literature has yet to determine how different golf bag carrying positions influence periodic, unloaded jump performance and perceived exertion of the load carrying task. PURPOSE: The purpose of this study is to investigate how different golf bag load carriage methods may influence vertical jump performance and perceived exertion. METHODS: Five golf bag …
The Development Of A Novel Throwing Assessment For Children With Cerebral Palsy, Cory Cribb
The Development Of A Novel Throwing Assessment For Children With Cerebral Palsy, Cory Cribb
Electronic Theses and Dissertations
Introduction: Cerebral palsy is one of childhood's most common developmental disabilities. Cerebral palsy leads to dysfunction in the upper extremities due to symptoms such as low muscle power, spasticity, and increased tone. A modified throwing assessment was constructed to examine throwing performance as a measure of upper extremity function. Purpose: To determine if the modified throwing assessment is a reliable measure of throwing performance and if the modified throwing assessment is a valid measure of upper extremity power in children with CP. Methods: The study employed a test-retest design aimed at determining the reliability of a modified throwing assessment. Seven …
“The Vehicle Was A Hockey Game”: A Holistic Approach To Aging For Older Men, Ryan Tomaselli
“The Vehicle Was A Hockey Game”: A Holistic Approach To Aging For Older Men, Ryan Tomaselli
Electronic Theses and Dissertations
The many benefits of physical activity are well established. Nonetheless, there remains a need for qualitative research on aging and sports focused on the normalization of sport for older adults, and the increased opportunity for sport participation in older age. Aging and sport research, which has primarily focussed on older elite athletes, has found older adults value health-related benefits, social interaction, and resistance of the aging process through sport participation. However, research examining a broader scope of specific sport participation, such as hockey, in older age may provide a distinguished understanding of participation tied to meaning and lifestyle factors. Therefore, …
Showcasing Strengths Of People With Disability To Stimulate Social Change, Kelly Carr
Showcasing Strengths Of People With Disability To Stimulate Social Change, Kelly Carr
Electronic Theses and Dissertations
Objective: The overarching purpose of this dissertation was to understand the potential to stimulate social change through exposure to strengths-based contexts where people with disabilities displayed their skills. Through the intentional dismissal of a traditional, deficits-based approach to disability-related research, this dissertation highlighted the strengths of people with impairment as a means to resist disabling assumptions. As such, the actions of people with disability within these studies exist outside of imaginable possibilities produced by dominant social structures, and possess the capacity to shape the social world. By examining the impact of exposure to these three contexts, this dissertation sought to …
Hand-Arm Vibration Exposure In Drummers, Dylan Durward
Hand-Arm Vibration Exposure In Drummers, Dylan Durward
Electronic Theses and Dissertations
Due to the physically intense nature of the activity, drummers (i.e., percussionists who play the drum set) are exposed to a variety of factors, including hand-arm vibration (HAV), that put them at increased risk of developing playing-related musculoskeletal disorders (PRMDs). The purpose of this study was to examine HAV exposure in drummers through realistic playing scenarios. Specifically, this study examined vibrations (i.e., frequency-weighted RMS accelerations) recorded at the hands. Six male drummers played three songs of their choosing with one accelerometer placed on the right hand, then repeated the same three songs with the accelerometer placed on the left hand …
The Relationship Between Optic Nerve Sheath Diameter, Carotid Artery Pulsatility Index, And Blood Pressure In Healthy Adults, Rachel Marie Stone
The Relationship Between Optic Nerve Sheath Diameter, Carotid Artery Pulsatility Index, And Blood Pressure In Healthy Adults, Rachel Marie Stone
Electronic Theses and Dissertations
Monitoring intracranial pressure (ICP) has become an important practice in patients with elevated ICP (e.g., traumatic brain injury) to improve patient outcome. However, little information exists surrounding chronic, but sub-clinical elevations in ICP, which may stem from classic cardiovascular risk factors, such as elevated blood pressure (BP). The current methods to assess ICP are invasive and costly; but optic nerve sheath diameter (ONSD) and blood flow pulsatility (pulsatility index; PI) are promising non-invasive techniques, both of which have been reported to strongly correlate with invasive measures of ICP in pathology. However, the interactions of BP, ONSD and PI in otherwise …
Stress, Stress Appraisal And Coping In Athletic Trainers During The Covid-19 Pandemic, Lawson Holton
Stress, Stress Appraisal And Coping In Athletic Trainers During The Covid-19 Pandemic, Lawson Holton
Electronic Theses and Dissertations
Introduction: There have been many studies conducted on the stress and mental health of frontline healthcare workers (HCWs) over the past months since the COVID-19 pandemic began. Very limited literature has examined the effect of the pandemic on athletic trainers (ATs). Objective: The aim of this investigation was to examine the stress, stress appraisal, and coping measures of ATs during the COVID-19 pandemic. Methods: Participants were recruited members from the National Athletic Trainers’ Association (NATA). The Perceived Stress Scale-10 was used to measure stress, the Stress Appraisal Measure was used to measure stress appraisal, and the Brief COPE was used …
An Investigation Of Drummers’ Trunk And Upper Limb Muscle Activation Profiles During High-Velocity Cymbal Crashes, Nicolas Latreille
An Investigation Of Drummers’ Trunk And Upper Limb Muscle Activation Profiles During High-Velocity Cymbal Crashes, Nicolas Latreille
Electronic Theses and Dissertations
Drumming is a physically demanding activity, and skilled drummers share many physical and cognitive attributes with elite athletes. The “double pulse” muscle activation (DPMA) pattern is a motor control strategy that has been observed in athletes of sports involving ballistic movements, such as baseball, golf, and elite Mixed Martial Arts fighters. The two pulses are believed to function to increase striking velocity and effective mass, thus increasing force transfer onto the target. The purpose of this study was to examine the muscle activation patterns of highly skilled drummers for evidence of a DPMA during high-velocity cymbal crashes. Three highly skilled …
The Impact Of Gloves And Simulated Occupational Tasks On Handgrip Strength In Structural Firefighters, Sarah Lanham
The Impact Of Gloves And Simulated Occupational Tasks On Handgrip Strength In Structural Firefighters, Sarah Lanham
Electronic Theses and Dissertations
Adequate handgrip strength (HGS) is important to safely and effectively perform fireground tasks. However, there is limited research describing the deleterious impact of glove use and fatigue from occupational tasks on HGS. Therefore, the aims of this investigation were to quantify the impact of glove use and occupational tasks on HGS, to explore the relationship between HGS versus the glove and task-induced decrement in HGS, and to evaluate the relationship between HGS and decrement in HGS versus occupational performance. Fourteen (Males: n=13) career structural firefighters performed a maximal isometric HGS assessment with and without gloves before and immediately following completion …
Effects Of Varying Warmup Stimuli On Running Economy, Connor Bigenho
Effects Of Varying Warmup Stimuli On Running Economy, Connor Bigenho
Electronic Theses and Dissertations
Purpose: The purpose of this study was to determine the effects of two potentiating warm-up stimuli (weighted-vest strides and plyometrics) on running economy (RE) over short (5-10 minutes) and longer durations (30+ minutes) of exercise in trained distance runners. Methods: Five recreationally trained male runners were recruited to participate in this study. Each trial consisted of a 10-min self-paced warm-up on the treadmill followed by baseline RE test and baseline leg-stiffness. This was immediately followed by one of two intervention warmup protocols. The protocols consisted of either a series of plyometric movements, 6 x 10-sec strides with a …
Recovery Methodologies And High Intensity Interval Training, Blake W. Johnson, Malcom T. Whitehead
Recovery Methodologies And High Intensity Interval Training, Blake W. Johnson, Malcom T. Whitehead
Electronic Theses and Dissertations
The purpose of this study was to determine recovery from Tabata bodyweight high intensity interval training (HIIT) exercise using different recovery assessment methodologies across 24- and 48-hour time intervals. Participants (23.2 ± 3.1 years old, 163.1 ± 19.9 lbs., and 22.8 ± 9.6 % body fat) consisted of 3 females and 7 males (n=10) Individuals who were recreationally trained (4+ days per week, 30+ minutes per day at moderate to vigorous intensity) and conducted both Trial A (24-hours between HIIT sessions) and Trial B (48-hours between HIIT sessions). Before and during each session, heart rate, countermovement jump, perceptual, …
Evaluating The Appropriateness Of Retail Providers’ Selections Of Office Ergonomic Products Based On Customer Orders And Inquiries, Victoria Brunet
Evaluating The Appropriateness Of Retail Providers’ Selections Of Office Ergonomic Products Based On Customer Orders And Inquiries, Victoria Brunet
Electronic Theses and Dissertations
Product providers are individuals working for companies who are responsible for aiding and selecting office ergonomic products for clients and are key players in the product purchasing stage of the Office Workstation Assessment, Recommendation, Purchasing and Implementation (OWARPI) process. Despite the importance of their role to ensure proper products are selected, there is no existing research on product providers. The objective of this two-part study was to evaluate how companies within the product provider sector (both ergonomic and non-ergonomic) in Ontario, Canada performed when recommending products. Each company was presented with 15 vignettes via an alias-blocked procedure. Performance was evaluated …
Allowing The Experiences Of Older Adults To Be Heard: Interpreting Senior Centre Accessibility, Fallon Mitchell
Allowing The Experiences Of Older Adults To Be Heard: Interpreting Senior Centre Accessibility, Fallon Mitchell
Electronic Theses and Dissertations
Senior centres aim to support and improve the health of older adults by offering a wide variety ofservices and activities tailored to their needs, yet there is little known about accessibility of senior centres. Inaccessible environments can negatively impact participation and health potentially leading to increased sedentary behaviour and morbidity. This study explores the accessibility experiences of older adults through a case study of a senior centre in Southwestern Ontario. This study utilizes a hermeneutic phenomenological approach to ascertain a deeper understanding of the participants’ lived experiences. Six older adult members (m = 2, f = 4; Mage = 72 …
The Effects Of A 12-Week, Virtual, At-Home Upper Limb Training Program For Stroke Survivors On Falls Self-Efficacy And Physical Functioning, Amanda Tetzlaff
The Effects Of A 12-Week, Virtual, At-Home Upper Limb Training Program For Stroke Survivors On Falls Self-Efficacy And Physical Functioning, Amanda Tetzlaff
Electronic Theses and Dissertations
Chronic health conditions and sedentary behaviour are major public health concerns among older adults. The relationship between falls and upper limb strength becomes increasingly apparent among stroke survivors. In addition to helping prevent a fall from occurring, the upper limbs play a significant role in the performing activities of daily living and other meaningful tasks. However, fall prevention and stroke research focused on exercise and rehabilitation has primarily focused on lower-limb impairments. Thus, the objective of this study was to determine if a 12-week upper limb, virtual, at-home exercise intervention had an effect on falls self-efficacy and physical functioning on …
Ergonomic Evaluation Of Percentile Height Differences During Automorive Assembly Tasks – A Focus On Joint Angle Kinematics, Joe Kagumba
Electronic Theses and Dissertations
The purpose of this study was to assess the effects of anthropometric height on movement variability during seven simulated automotive assembly tasks. Twenty participants completed seven simulated automotive assembly tasks commonly found in industry. The 20 participants were evenly distributed into one of four groups based on their height. For each group, and during each task, the following seven time-series joint angle profiles were assessed: Elbow Flexion/Extension (Flex/Ext), Shoulder Abduction/Adduction (Abd/Add), Shoulder Forward/Backwards movement (For/Back), Trunk Flex/Ext, Trunk Lateral bending (Lat), Hip Flex/Ext and Knee Flex/Ext. To compare between groups, Statistical Parametric Mapping (SPM) was used to assess group differences …
University Students Using Physical Activity As A Coping Strategy During The Covid-19 Pandemic, Jory Fulcher
University Students Using Physical Activity As A Coping Strategy During The Covid-19 Pandemic, Jory Fulcher
Electronic Theses and Dissertations
The Coronavirus Disease 2019 (COVID-19) pandemic is the most recent threat to global health (Fauci, Lane, & Redfield, 2020), impacting university students’ mental and physical health. Few studies currently exist that investigate the impact of online learning and COVID-19 have on stress and coping in university students (Bao, 2020; Xiao et al., 2020). Therefore, the purpose of the study was to investigate if students were using physical activity as a coping strategy for stress during the COVID-19 pandemic. An online survey assessing student stress, physical activity, and coping flexibility was completed by 276 undergraduate students (mean age 21.1 ± 2.7 …
Development Of A Novel Haptic Feedback System For Gait Training Applications, Mohsen Alizadeh Noghani
Development Of A Novel Haptic Feedback System For Gait Training Applications, Mohsen Alizadeh Noghani
Electronic Theses and Dissertations
Until recently, study and correction of motor or gait functions required costly sensors and measurement setups (e.g., optical motion capture systems) which were only available in laboratories or clinical environments. However, due to (1) the growing availability and affordability of inertial measurement units (IMUs) with high accuracy, and (2) progress in wireless, high bandwidth, and energy-efficient networking technologies such as Bluetooth Low Energy (BLE), it is now possible to measure and provide feedback in real-time for biomechanical parameters outside of those specialized settings. To enable gait training without an expert who can provide verbal feedback, augmented feedback, which is divided …
Deception Of Resistance And The Effects On Muscular Fitness And Perceived Exertion, Tyler Mchenry
Deception Of Resistance And The Effects On Muscular Fitness And Perceived Exertion, Tyler Mchenry
Electronic Theses and Dissertations
Resistance training has been a popular tactic that individuals have used to increase muscular fitness for decades. Muscular fitness includes muscular endurance, strength, and power. However, limitations such as self-efficacy and the Central Governor Theory may influence individual maximal performance ability. One training tactic that has been rarely researched is the deception of resistance during exercise, which is assumed to increase performances in all aspects of muscular fitness and improvements in perceived effort. Inconsistent results have been concluded from previous studies that have examined the same topic. Therefore, the purpose of this study was to investigate the effect of resistance …
Development And Evaluation Of An Attachable Anti-Vibration Handle For Blueberry Hand Shaker, Jashwant Thota
Development And Evaluation Of An Attachable Anti-Vibration Handle For Blueberry Hand Shaker, Jashwant Thota
Electronic Theses and Dissertations
Blueberry production has skyrocketed in the past two decades due to an exponential increase in consumer demand around the world. The harvesting of fresh, high-quality blueberries requires extensive care. Large-scale automatic harvesters damage the fruit and make it unsuitable for storage and transportation, which requires more than two weeks to complete. Therefore, hand harvesters are used, avoiding damage to the fruit, and increasing harvesting efficiency multifold when compared with that of hand-picking. The downside of these hand harvesters is their high Hand Arm Vibration (HAV), which is very dangerous for the worker and can cause hand-arm vibration syndrome (HAVS). This …
Exploring Teacher Perceptions Of Teaching Strategies For Fundamental Movement Skills In Primary Physical Education Programs, Danielle Salters
Exploring Teacher Perceptions Of Teaching Strategies For Fundamental Movement Skills In Primary Physical Education Programs, Danielle Salters
Electronic Theses and Dissertations
Physical education (PE) programs are uniquely situated to promote the development of motor skills during childhood. When children do not receive appropriate instructions during motor skill development, they are likely to experience motor delays. Nevertheless, the relationship between Fundamental Movement Skills (FMS) and teaching styles in PE has remained relatively unexplored in previous research. The present study explored teacher perceptions of FMS through a mixed-methods approach. Participants were a mix of preservice, specialist, and general primary school teachers with varying levels of PE experience. Surveys were used to assess self-reported use of the spectrum of teaching styles among PE teachers. …
The Effects Of Hip Rotation On Hip Abductor Muscle Activation During Lateral Band Walk Exercise, Gina M. Fritz
The Effects Of Hip Rotation On Hip Abductor Muscle Activation During Lateral Band Walk Exercise, Gina M. Fritz
Electronic Theses and Dissertations
BACKGROUND: Lateral band walks (LBW) have been used to strengthen hip abductors and decrease risk of lower extremity injuries. Several methods have been used to complete this exercise to determine which has the best outcome. PURPOSE: The purpose of this study is to compare muscle activation of the gluteus medius (Gmed), gluteus maximus (Gmax), and tensor fasciae latae (TFL) during straight leg LBW exercises performed using three different hip positions: 30-degree internal rotation, 30-degree external rotation, and a neutral hip position. METHODS: Thirty-seven recreationally active participants (10 male, 27 female; age=21.4±2.2 yr; mass=71.4±13kg; height=1.7±0.1 m) completed this study. Surface EMG …
Psychometric Evaluation Of Memory And Concentration Sections In The Standardized Assessment Of Concussion, Seungho Ryu
Psychometric Evaluation Of Memory And Concentration Sections In The Standardized Assessment Of Concussion, Seungho Ryu
Electronic Theses and Dissertations
The purpose of this study is to evaluate validate the memory and concentration sections of the Standardized Assessment of Concussion (SAC) from the SCAT5. Two studies were conducted. The first study examined item difficulty and discrimination using 10 new word lists of 3 versions in the immediate memory section using item analysis based on classical test theory and to equate scores earned on different versions of 10 word lists using test equating methods. The second evaluated the validity of digits backwards in the concentration section, and evaluated current and new scoring methods for the digit backwards. Two hundred young adults …
The Effects Of A Mirror On Cognitive Strategy And Performance Of A Muscular Endurance Task, Brianna M. Simmons
The Effects Of A Mirror On Cognitive Strategy And Performance Of A Muscular Endurance Task, Brianna M. Simmons
Electronic Theses and Dissertations
Context: Mirrors are common-place in exercise facilities, however, the effect the mirror has on cognitive strategy (i.e., where the mind’s at) and performance time has not been examined in a muscular endurance task (i.e., a wall sit). Objective: To determine, (1) the mirror’s effect on cognitive state during a wall sit to volitional exhaustion, (2) the mirror's effect on time to volitional exhaustion during a wall sit, and (3) the mirror’s effect on the participant’s rating of perceived exertion (RPE) during the wall sit. Design: Repeated measures design. Setting: Indoor exercise facility. Participants: Twenty resistance-trained Georgia Southern University Students (9 …
Strength And Body Composition Changes Of Junior Hockey Players During The Competitive Season, Dan Marquette
Strength And Body Composition Changes Of Junior Hockey Players During The Competitive Season, Dan Marquette
Electronic Theses and Dissertations
Purpose: This study investigated the body composition and strength changes of NAHL junior hockey players across a competitive season. It was hypothesized that players would lose lean body mass loss from pre-season to end-season. The secondary hypothesis was that players would lose strength in relation to the anticipated loss in lean body mass. Methods: Outcome measurements were taken at pre-season, mid-season, and endseason points of a competitive NAHL junior hockey season (n = 15, age = 19.1 years). Body composition was measured using air plethysmography (BodPod) and strength was measured using isokinetic strength testing (Biodex). Results: No significant changes in …
Improvements In Timing Variables For The Timed Up And Go And Its Subphases Following A Progressive Resistance Training Program, Shelby Kasch
Improvements In Timing Variables For The Timed Up And Go And Its Subphases Following A Progressive Resistance Training Program, Shelby Kasch
Electronic Theses and Dissertations
Purpose: To evaluate the effectiveness of progressive resistance training (PRT), with the inclusion of balance and stretching exercises, on the timed up and go (TUG) task. Specifically, we investigated the TUG in regard to changes in timing variables for the entire movement and the subphases, in association with muscular strength, ambulation, fatigue, and perceived disability in patients with Multiple Sclerosis (PwMS).
Methods: Fifteen PwMS volunteered twice weekly for a twelve-week PRT exercise training program. The participants underwent an assessment at baseline (strength assessments using a Biodex dynamometer and one repetition max (1RM); the TUG and its subphases using Qualysis Track …
Accurate Measurement Of Healthy Joint Kinematics To Inform Diagnosis And Treatment, Vasiliki Kefala
Accurate Measurement Of Healthy Joint Kinematics To Inform Diagnosis And Treatment, Vasiliki Kefala
Electronic Theses and Dissertations
The description of human motion has a primary importance in different scientific areas such as medicine, sports, physical therapy. Kinematics specifically studies pure motion without reference to the causes of motion such as forces. Understanding the kinematics of human movement is of critical importance in medicine and biology. Motion measurement can be used in order to to evaluate functional performance of limbs under normal and abnormal conditions. Kinematic knowledge is also important for diagnosis and surgical treatment of joint disease and the design of implants to rehabilitate function. Accurate joint kinematics is essential to protect articular functionality. An alteration may …
Tibial Strains And Tray-Bone Micromotions After Total Knee Arthroplasty: Computational Studies Evaluating The Tibial Fixation, Huizhou Yang
Tibial Strains And Tray-Bone Micromotions After Total Knee Arthroplasty: Computational Studies Evaluating The Tibial Fixation, Huizhou Yang
Electronic Theses and Dissertations
Cemented and cementless fixation in total knee arthroplasty (TKA) have been successfully used for decades. As the number of younger and more active patients treated with TKA continues to increase, long-term implant survivorship is of increasing importance. One of the most common complications and hence the reason for revision is mechanical loosening (23.1% of all revised TKA). The loosening mechanisms have been proposed for different fixation types. For cemented fixation, bone remodeling after surgery is regulated by the changes in strain energy density (SED). The recruitment of osteoclasts and osteoblasts is controlled by SED-related signals. Insufficient stimuli can promote bone …
Visual Tracking Speed And Soccer Performance Metrics, Julia Paige Phillips
Visual Tracking Speed And Soccer Performance Metrics, Julia Paige Phillips
Electronic Theses and Dissertations
Visual training has previously been shown to correlate to sport specific level of training and sport specific performance measures in controlled conditions. However, it remains unclear if these relationships exist between visual tracking thresholds and in competition decision making metrics over the duration of a soccer season. Therefore, the purpose of this study was to investigate the relationship between visual tracking speed (VTS) baseline scores and soccer-specific performance measures. In total, 19 NCAA Division I soccer players were tested before the 2021 spring soccer season, after exclusionary criteria only 13 were utilized for analysis. VTS was measured from 1-core session …
Long-Term Disability Following A Hamstring Injury, Savannah Mclain
Long-Term Disability Following A Hamstring Injury, Savannah Mclain
Electronic Theses and Dissertations
PURPOSE: Injuries to the hamstring complex are one of the most commonly seen lower extremity injuries in athletic populations. It is currently unknown how psychological or sociological factors affect an athlete after the recovery process has ended and if these factors play a role in re-injury rates relating to the hamstring. It is also unknown if athlete confidence level changes while in a fatigued state after an athlete returns to play from a hamstring injury. METHODS: Twenty-six physically active adults with and without a previous hamstring injury were recruited for this study. Participants completed a Qualtrics survey that …