The Effect Of Backpack Load On Trunk Kinematics Of Imitated Pathological Gait: A Case Study,
2021
Eastern Washington University
The Effect Of Backpack Load On Trunk Kinematics Of Imitated Pathological Gait: A Case Study, Kara Kracher
EWU Masters Thesis Collection
Background: It is well documented that loaded backpacks affect the biomechanics of gait in both children and adults. Minimal information is available with regard to the effects of backpacks on the biomechanics of gait in individuals with clinical gait abnormalities, such as those seen in cerebral palsy. Healthy, non-clinical populations can be taught how to ‘imitate’ typical gait abnormalities in order to study various experimental interventions without enlisting clinical patients. The objective of this study was to determine the acute effect of backpack load on kinematics of the trunk during typical and imitated pathological gait. Methods: COVID 19 restrictions precluded …
High Risk Environmental Conditions Attenuate Distance, Speed, And Performance Efficiency Index In Ncaa D1 Female Soccer Players,
2021
University of Central Florida
High Risk Environmental Conditions Attenuate Distance, Speed, And Performance Efficiency Index In Ncaa D1 Female Soccer Players, Maxine Furtado Mesa
Electronic Theses and Dissertations, 2020-2023
PURPOSE: To evaluate the effects of environmental conditions on running performance and performance efficiency index (Effindex). METHODS: Performance data recorded using Polar Pro sensors from eight collegiate female soccer players in nine matches were analyzed during the 2019 competitive season. Effindex and running performance, including total distance covered relative to minutes played (TDREL) and distance covered in five-speed thresholds, were examined for indications of fatigue with rising environmental conditions, including ambient temperature and relative humidity. Matches were separated into three groups based on environmental condition risk: low (Low-Risk; n= 2 matches), moderate (Moderate-Risk; n=3 matches), or high (High-Risk; n=4 matches). …
Examination Of Sex- And Intensity-Specific Fatigue During Bilateral Leg Extension Exercise,
2021
University of Kentucky
Examination Of Sex- And Intensity-Specific Fatigue During Bilateral Leg Extension Exercise, Taylor Kayln Dinyer
Theses and Dissertations--Kinesiology and Health Promotion
The purposes of this study were to: 1) examine sex-related differences in the performance of repetitions to failure below (CL-10%, CL-20%) and above (50%, 60%, 70%, and 80% 1RM) the critical load (CL) to make inferences regarding the mechanisms responsible for variability in the performance of repetitions to failure at varying loads; 2) examine the time course of neuromuscular and muscle oxygen saturation responses during the performance of repetitions to failure below and above the CL; 3) to make inferences regarding motor unit activation strategies used to maintain force during the completion of repetitions below and …
Examining The Impact Of High Sodium Intake On Blood Flow Regulation, Exercise Tolerance, And Oxidative Stress In Salt Resistant Individuals,
2021
Virginia Commonwealth University
Examining The Impact Of High Sodium Intake On Blood Flow Regulation, Exercise Tolerance, And Oxidative Stress In Salt Resistant Individuals, Kevin P. Decker
Theses and Dissertations
Excessive dietary sodium consumption increases the risk for high blood pressure (BP), and therefore recommended for dietary sodium intake to be ≤ 2,300 mg/day. Recommendations are based on salt-sensitive individuals who report elevated BP with high sodium (HS) intake, but many individuals are salt-resistant (SR) who experience little to no change in BP with HS intake. Currently, less is known about the adverse cardiovascular effects of HS intake independent of BP. A potential source of impaired blood vessel function (micro- and macro-) from HS intake is oxidative stress, or the imbalance between antioxidant defense and oxidants, in favor of oxidants. …
Flexibility: The Forgotten Component Of Fitness: Eccentric Exercise Vs. Static Stretching To Improve Flexibility,
2021
Eastern Illinois University
Flexibility: The Forgotten Component Of Fitness: Eccentric Exercise Vs. Static Stretching To Improve Flexibility, Zach Cox
Masters Theses
The purpose of this research is to assess the effects of eccentric exercise as well as static stretching on flexibility following a six-week training intervention. It also compared the effects to those of a static stretching program. The hypothesis is that eccentric training will show larger enhancements in flexibility in sagittal plane movements of the hips and knees in comparison to a static stretching program. Training sessions were done three days per week and had a 24-hour rest period minimum between them. The exercises for the eccentric group were as follows: standing hip extension, standing split, straight leg lowering, and …
Recreational Female Crossfit Athletes And Low Energy Availability,
2021
South Dakota State University
Recreational Female Crossfit Athletes And Low Energy Availability, Alison Kuch
Electronic Theses and Dissertations
CrossFit is a demanding sport in which athletes perform constantly varied, functional movements at a high intensity, therefore requiring an adequate energy availability to avoid negative health and performance consequences. The purpose of this study was to assess risk of low energy availability (low EA) (phase 1) among recreational, female CrossFit athletes and measure and calculate energy availability using a 7-day dietary to measure energy intake (EI) and exercise energy expenditure (ExEE) (phase 2). In phase 1, using the LEAF-Q (Low Energy Availability in Females Questionnaire), 49% of survey respondents (n=149) were found to be at risk of low EA. …
Contralateral Effects Of Unilateral Strength And Skill Training: Modified Delphi Consensus To Establish Key Aspects Of Cross-Education,
2021
Edith Cowan University
Contralateral Effects Of Unilateral Strength And Skill Training: Modified Delphi Consensus To Establish Key Aspects Of Cross-Education, A. Manca, T. Hortobágyi, T. J. Carroll, R. M. Enoka, J. P. Farthing, S. C. Gandevia, D. J. Kidgell, Janet L. Taylor, F. Deriu
Research outputs 2014 to 2021
© 2020, The Author(s). Background: Cross-education refers to increased motor output (i.e., force generation, skill) of the opposite, untrained limb following a period of unilateral exercise training. Despite extensive research, several aspects of the transfer phenomenon remain controversial. Methods: A modified two-round Delphi online survey was conducted among international experts to reach consensus on terminology, methodology, mechanisms of action, and translational potential of cross-education, and to provide a framework for future research. Results: Through purposive sampling of the literature, we identified 56 noted experts in the field, of whom 32 completed the survey, and reached consensus (75% threshold) on 17 …
Current Recommendations For Lower Body Aerobic Exercise In Chronic Unilateral Stroke - A Systematic Review,
2021
Georgia Southern University
Current Recommendations For Lower Body Aerobic Exercise In Chronic Unilateral Stroke - A Systematic Review, Jordan N. Brown
College of Graduate Studies: Theses & Dissertations
Background: Chronic stroke patients (i.e., > six months since the onset of stroke) continue to experience persistent gait complications. Once formal physical therapy concludes, exercise professionals can implement exercise interventions designed to improve quality of life and reduce risk of secondary stroke. This systematic review aimed to evaluate whether lower-body aerobic exercise transferred to gait improvements in chronic unilateral stroke. Methods: An electronic search of the following databases were undertaken: MEDLINE, CINHAL, Ovid, and SPORTdiscus. Two independent reviewers selected articles using predetermined inclusion criteria: adults (i.e., >18 years old) who suffered from a chronic unilateral stroke. Additionally, all included studies were …
Exertional Heat Illness Risk Factors And Physiological Responses Of Youth Football Players,
2021
Department of Exercise Science, University of South Carolina, Columbia, SC 29208, USA. Electronic address: [email protected].
Exertional Heat Illness Risk Factors And Physiological Responses Of Youth Football Players, Susan W. Yeargin, John J. Dickinson, Dawn M. Emerson, Jessica Koller, Toni M. Torres-Mcgehee, Zachary Y. Kerr
Faculty Publications
OBJECTIVE: To determine which intrinsic and extrinsic exertional heat illness (EHI) risk factors exist in youth American football players and observe perceptual and physiological responses of players during events (games and practices). METHODS: Cross-sectional cohort study observing 63 youth football players, varying in position. Independent variables were league (weight-restricted (WR, n = 27) and age-restricted (AR, n = 36)) and event type. Dependent variables were anthropometrics, work-to-rest ratio, and wet bulb globe temperature. Descriptive variables included preparticipation examination and uniform configuration. A subset of 16 players participated in physiological variables (heart rate and gastrointestinal temperature). Data collection occurred on 7 …
Effects Of A Dual-Task Paradigm On Tandem Gait Performance,
2021
Cal Poly Humboldt
Effects Of A Dual-Task Paradigm On Tandem Gait Performance, Courtney Angela Perry
Cal Poly Humboldt theses and projects
In concussion management, a variety of cognitive and motor control tests, like the tandem gait, have been used for assessing the presence of a concussion injury at the sideline and through recovery. More recently, research suggests that introducing a secondary cognitive retention task during tandem gait (i.e., dual task) may provide a better assessment of concussion. The purpose of this study was to determine if a tandem gait test paired with a 6-digit retention is a valid and reliable tool. Participants completed three trials of both the single-task (ST) and dual-task (DT) tandem gait tests, and their average (MEAN) and …
Long-Term Disability Following A Hamstring Injury,
2021
Georgia Southern University
Long-Term Disability Following A Hamstring Injury, Savannah Mclain
College of Graduate Studies: Theses & 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 …
The Effects Of A Mirror On Cognitive Strategy And Performance Of A Muscular Endurance Task,
2021
Georgia Southern University
The Effects Of A Mirror On Cognitive Strategy And Performance Of A Muscular Endurance Task, Brianna M. Simmons
College of Graduate Studies: Theses & 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 …
Biomechanics Of The Lower Back During Repetitive Deadlifts, With And Without Body Armor,
2021
University of Kentucky
Biomechanics Of The Lower Back During Repetitive Deadlifts, With And Without Body Armor, Vanessa J. Ramirez
Theses and Dissertations--Kinesiology and Health Promotion
Background: Low back pain is a significant problem and one of the primary musculoskeletal-related conditions affecting active-duty service members [1]. Since more than two-thirds of U.S. soldier occupational tasks involve lifting from floor level to waist height [2], increasing individual lifting capacity is strongly correlated with performance with these tasks [3]. Training for the first Army Combat Fitness Test event (3RM deadlift) to improve lifting capacity directly relates to performing carrying/lifting military tasks. One training modality that can be used in training programs to improve lifting capacity is repetitions-to-failure (RTF) or repetitive lifting to volitional failure [4-8]. RTF is widely …
Comparison Of The Times To Exhaustion, Physiological, Perceptual, And Neuromusuclar Responses During Constant Heart Rate, Constant Vo2, And Constant Power Exercise,
2021
University of Kentucky
Comparison Of The Times To Exhaustion, Physiological, Perceptual, And Neuromusuclar Responses During Constant Heart Rate, Constant Vo2, And Constant Power Exercise, Pasquale Jiovanni Succi
Theses and Dissertations--Kinesiology and Health Promotion
The purposes of this study were to: 1) Determine if there are differences in the sustainability of exercise when anchored at critical heart rate (CHR), the VO2 associated with CHR (VO2CHR), or the power output associated with CHR (PCHR); 2) examine the patterns of responses in power output, metabolic (heart rate [HR], VO2, respiration rate [RR]), neuromuscular (electromyographic [EMG] amplitude [AMP], mean power frequency [MPF], mechanomyographic [MMG] AMP and MPF, perceptual (rating of perceived exertion [RPE]), and muscle oxygenation responses (%SmO2) during exercise anchored by HR, VO2, and power output; and …
Examination Of Sex- And Limb-Specific Fatigue During Unilateral, Isometric Forearm Exercise,
2021
University of Kentucky
Examination Of Sex- And Limb-Specific Fatigue During Unilateral, Isometric Forearm Exercise, Caleb Christian Voskuil
Theses and Dissertations--Kinesiology and Health Promotion
The purpose of this study was to examine the effects of unilateral, isometric handgrip holds to failure for the dominant (Dm) and non-dominant (NDm) limb on ipsilateral ([IPS] exercised side) and contralateral ([CON] non-exercised side) performance fatigability. Twenty individuals participated in this study (Men [n =10]; Women [n = 10; Composite Demographics: Age: 22.2 years; Height: 174.4 cm; Body Mass: 75.0 kg) and completed three visits. Two, 6 s maximal voluntary isometric contractions (MVICs) for the Dm and NDm limb were performed during visit 1, followed by a familiarization of the fatigue test. Visits 2 and 3 included an isometric, …
Quadriceps Recruitment And Twitch Properties In Lean And Obese Women Before And After Fatiguing Exercise,
2021
University of Kentucky
Quadriceps Recruitment And Twitch Properties In Lean And Obese Women Before And After Fatiguing Exercise, Rebekah Seay Carpenter
Theses and Dissertations--Kinesiology and Health Promotion
Skeletal muscle strength, specifically that of the anti-gravitational muscles such as the quadriceps, is essential for performing dynamic tasks including walking, navigating stairs, and transitioning between sitting and standing. Obesity has been shown to negatively impact musculoskeletal function and decrease quadriceps strength relative to body weight. Additionally, obesity has been linked with higher rates of fatigue and lower strength outcomes following a test of muscular endurance of the quadriceps. Since obesity lowers relative strength, it is likely that quadriceps muscle weakness contributes to reduced physical function of dynamic tasks. However, to date, the precise mechanism for obesity-induced muscle weakness has …
The Acute Effect Of High Intensity Resistance Training On Subsequent Firefighter Performance,
2021
University of Kentucky
The Acute Effect Of High Intensity Resistance Training On Subsequent Firefighter Performance, Mark Ryan Mason
Theses and Dissertations--Kinesiology and Health Promotion
High intensity resistance training (HIRT) is commonly performed by structural firefighters to enhance preparedness for occupational demands. Despite the potential for HIRT to induce beneficial adaptations over time, it is important to determine if a single on-duty HIRT session is detrimental to subsequent occupational physical ability due to exercise-induced fatigue. Therefore, the primary purpose of this study was to assess the acute effect of HIRT on occupational physical ability in structural firefighters and to determine the time course of recovery. The secondary purpose was to determine if timed completion of a standardized bout of HIRT was correlated to occupational performance …
Quantification Of In-Play Competition Demands Of Collegiate American Football Players Using Global Positioning Systems,
2021
University of Kentucky
Quantification Of In-Play Competition Demands Of Collegiate American Football Players Using Global Positioning Systems, Alex Brownell
Theses and Dissertations--Kinesiology and Health Promotion
There is limited information describing the competition demands of American football. A greater understanding of competition demands will allow strength and conditioning practitioners to create appropriate training programs to enhance athlete readiness and performance. Therefore, the purpose of this study was to analyze the competition demands of collegiate American football players using global positioning systems (GPS), specifically comparing the in-play GPS versus out-of-play GPS outcomes. Twenty-two American football athletes (Age: 20.8 ± 0.9 yr, Height: 190.2 ± 4.7 cm, Body mass: 113.4 ± 22.3 kg) were monitored during 12 regular season competitions over 13 weeks. Athletes were divided into specific …
What Is The Minimal Dose For Resistance Exercise Effectiveness In Prostate Cancer Patients? Systematic Review And Meta-Analysis On Patient-Reported Outcomes,
2021
Edith Cowan University
What Is The Minimal Dose For Resistance Exercise Effectiveness In Prostate Cancer Patients? Systematic Review And Meta-Analysis On Patient-Reported Outcomes, Pedro Lopez, Dennis R. Taaffe, Robert U. Newton, Laurien M. Buffart, Daniel A. Galvão
Research outputs 2014 to 2021
© 2020, The Author(s). Background: Active treatments for prostate cancer are well known to result in several adverse effects such as fatigue, depression and anxiety symptoms, impacting the overall quality of life (QoL) and wellbeing of a considerable proportion of patients. Resistance-based exercise interventions have shown positive effects to reduce or mitigate these treatment-related side effects. However, the minimal dosage required to derive these benefits is unknown. We systematically reviewed the resistance training effects in prostate cancer patients to determine the minimal dosage regarding the exercise components (mode, duration, volume and intensity) on fatigue, QoL, depression and anxiety. Methods: Using …
Wingate Muscular Power Test Reference Values For Active Healthy Adults Ages 19-29: Normative Data And Differences Between Sex,
2021
Cal Poly Humboldt
Wingate Muscular Power Test Reference Values For Active Healthy Adults Ages 19-29: Normative Data And Differences Between Sex, Levi Basist
Cal Poly Humboldt theses and projects
The Wingate Muscular Power Test (WMPT) has existed for several decades and to this day is considered the gold standard for evaluating an individual’s muscular power. However, the utility of this test is predicated on having accurate and relevant normative data with which to compare individual results. At present, the existing literature on this subject is either several decades old and/or inclusive of only specific subject groups (i.e. men only or sport-specific athletes). This study presents WMPT normative values for active healthy adults ages 19-29, separated by sex. The sample consisted of 330 active healthy volunteers (186 men and 144 …
