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Factors Affecting Block Performance From The Omega Osb11 Starting Platform, Andrew Dragunas 2015 The University of Western Ontario

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 2015 The University of Western Ontario

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 ...


Distractor Processing In Identity Negative Priming Tasks, Ahmed Shuriye 2015 The University of Western Ontario

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 ...


An Investigation Of The Relationship Between A Static Jump Protocol And Squat Strength: A Potential Protocol For Collegiate Strength And Explosive Athlete Monitoring, Cody Haun 2015 East Tennessee State University

An Investigation Of The Relationship Between A Static Jump Protocol And Squat Strength: A Potential Protocol For Collegiate Strength And Explosive Athlete Monitoring, Cody Haun

Electronic Theses and Dissertations

The purpose of this study was to examine the relationship between estimated absolute and relative squat strength and a static jump protocol with potential to provide desirable training adaptation data to practitioners in the field of collegiate strength and conditioning. Forty-one young (20.80 ± 2.44 years), healthy volunteers reported estimated back squat 1RM’s based on the most recent training block and completed a static jump protocol. Males (n=19, est. 1RM 141.29 ± 32.02kg) and female (n=22, est. 1RM 71.56 ± 19.64kg) jump data revealed large to very large correlations between squat strength, mean jump ...


The Effect Of Various Body Positions On Performance Of The Isometric Mid-Thigh Pull, George K. Beckham 2015 East Tennessee State University

The Effect Of Various Body Positions On Performance Of The Isometric Mid-Thigh Pull, George K. Beckham

Electronic Theses and Dissertations

The purpose of this dissertation was to evaluate the effects of changing body position on the execution of the isometric mid-thigh pull (IMTP). Furthermore, while there is evidence to suggest that there is an effect of familiarization on performance of maximal strength tests, there has been no known research evaluating the effect of learning on the IMTP. The effect of familiarization was assessed by evaluating changes in variables obtained from the IMTP. Subjects did not statistically improve over the five IMTP testing sessions, regardless of the body position used, or if subjects had previous experience with weightlifting derivatives. This may ...


Negative Skeletal Effects Of Locally Produced Adiponectin, Marcia J. Abbott, Theresa M. Roth, Linh Ho, Liping Wang, Dylan O'Carroll, Robert A. Nissenson 2015 Chapman University

Negative Skeletal Effects Of Locally Produced Adiponectin, Marcia J. Abbott, Theresa M. Roth, Linh Ho, Liping Wang, Dylan O'Carroll, Robert A. Nissenson

Health Sciences and Kinesiology Faculty Articles

Epidemiological studies show that high circulating levels of adiponectin are associated with low bone mineral density. The effect of adiponectin on skeletal homeostasis, on osteoblasts in particular, remains controversial. We investigated this issue using mice with adipocyte-specific over-expression of adiponectin (AdTg). MicroCT and histomorphometric analysis revealed decreases (15%) in fractional bone volume in AdTg mice at the proximal tibia with no changes at the distal femur. Cortical bone thickness at mid-shafts of the tibia and at the tibiofibular junction was reduced (3–4%) in AdTg mice. Dynamic histomorphometry at the proximal tibia in AdTg mice revealed inhibition of bone formation ...


Use And Misuse Of The Likert Item Responses And Other Ordinal Measures, Phillip A. Bishop, Robert L. Herron 2015 Univ of Alabama

Use And Misuse Of The Likert Item Responses And Other Ordinal Measures, Phillip A. Bishop, Robert L. Herron

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 297-302, 2015. Likert, Likert-type, and ordinal-scale responses are very popular psychometric item scoring schemes for attempting to quantify people’s opinions, interests, or perceived efficacy of an intervention and are used extensively in Physical Education and Exercise Science research. However, these numbered measures are generally considered ordinal and violate some statistical assumptions needed to evaluate them as normally distributed, parametric data. This is an issue because parametric statistics are generally perceived as being more statistically powerful than non-parametric statistics. To avoid possible misinterpretation, care must be taken in analyzing these types of data ...


Evaluation Of A New Automated Pulmonary Gas Analysis System, Tove Hallenstål, Ida Sundqvist, Michael Svensson, Ji-Guo Yu Dr. 2015 Department of Surgical and Perioperative Sciences, Sport medicine Unit, Umeå University, Umeå, Sweden

Evaluation Of A New Automated Pulmonary Gas Analysis System, Tove Hallenstål, Ida Sundqvist, Michael Svensson, Ji-Guo Yu Dr.

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 287-296, 2015. The study aimed to evaluate the validity and reliability of a new automated pulmonary gas analysis system - Exercise Physiology System (EPS). The Oxycon Pro, a well-established automated pulmonary gas analysis system was used as a reference system. Six well-trained cyclists were recruited and performed two identical submaximal exercises on a cycle ergometer over one week interval. During the exercises, pulmonary gas exchange: ventilation (VE), oxygen consumption (VO2), elimination of carbon dioxide (VCO2), and ratio between carbon dioxide and oxygen (RER) was measured using both systems in randomized order. The ...


Effect Of Beetroot Juice On Self-Regulated, Moderate-Intensity Exercise, Jordyn N. Rienks, Andrea A. Vanderwoude, Elizabeth Maas, Zachary M. Blea, Andrew W. Subudhi 2015 University of Colorado Colorado Springs

Effect Of Beetroot Juice On Self-Regulated, Moderate-Intensity Exercise, Jordyn N. Rienks, Andrea A. Vanderwoude, Elizabeth Maas, Zachary M. Blea, Andrew W. Subudhi

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 277-286, 2015. Dietary nitrate supplementation has been shown to reduce oxygen consumption at a fixed work rate. We questioned whether a similar effect would be observed during variable work rate exercise at a specific rating of perceived exertion (RPE), as is commonly prescribed for aerobic training sessions. Using a double-blind, placebo controlled, crossover design, ten females (25 ± 3 years; VO2peak 37.1 ± 5.3 ml/kg/min) performed two 20-min cycle ergometer trials at a constant RPE of 13 (somewhat hard) 2.5 hours following ingestion of 140 ml of concentrated ...


Relation Of Income And Education Level With Cardiorespiratory Fitness, Erik A. Willis, Dave White, Alex Shafer, Kristofer Wisniewski, Fredric L. Goss, Laurel B. Chiapetta, Vincent C. Arena, Robert J. Robertson, Elizabeth F. Nagle 2015 University of Kansas Medical Center

Relation Of Income And Education Level With Cardiorespiratory Fitness, Erik A. Willis, Dave White, Alex Shafer, Kristofer Wisniewski, Fredric L. Goss, Laurel B. Chiapetta, Vincent C. Arena, Robert J. Robertson, Elizabeth F. Nagle

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 265-276, 2015. While there is strong evidence measuring the association between leisure time physical activity (LTPA) and socioeconomic status (SES) there are limited data on the relationship between cardiorespiratory fitness (CRF) and SES. The purpose of this cross-sectional study was to examine differences in CRF and LTPA between household income and individual education in young adults. A sample of 171 (males n=98, female n=73) young adults participated in the University of Pittsburgh-Physical Activity Study. Participants completed CRF testing. Demographic characteristics were assessed via interviewer administered standardized survey and LTPA was assessed ...


Risk Of Disordered Eating Among Division I Female College Athletes, Elizabeth Wells, Alexandra Chin, Jennifer Tacke, Jennifer Bunn 2015 Campbell University

Risk Of Disordered Eating Among Division I Female College Athletes, Elizabeth Wells, Alexandra Chin, Jennifer Tacke, Jennifer Bunn

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 256-264, 2015. The purpose of this study was to assess the risk of disordered eating (DE) among female athletes in lean and non-lean sports using the ATHLETE survey. The ATHLETE survey is divided into six different constructs, and a high score indicates a high risk for DE. Eighty-three varsity female athletes from eight Campbell University sports teams completed the survey and a medical history form anonymously. The sports were divided into sports that traditionally have a high risk for DE (lean sports) and those with a low risk (non-lean sports). The lean sports ...


Effects Of Caffeine On Repeated Upper/Lower Body Wingates And Handgrip Performance, Thomas Andre, Matt Green, Joshua Gann, Eric O'Neal, Tom Coates 2015 Baylor University

Effects Of Caffeine On Repeated Upper/Lower Body Wingates And Handgrip Performance, Thomas Andre, Matt Green, Joshua Gann, Eric O'Neal, Tom Coates

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 243-255, 2015. Caffeine enhances aerobic performance, but research is equivocal regarding anaerobic performance. This study examined effects of caffeine (7 mg/kg) on anaerobic performance in anaerobically active males (n = 10). Participants completed counterbalanced, double blind caffeine (Caf) and placebo (Pl) trials including a) 6 x 15 s upper body Wingates (UWant), b) 6 x 15 s lower body Wingates (LWant) and c) 6 x15 s maximal effort static hand grip test (HG) with 3 min recovery between bouts, 30 min between exercises. Peak power (Ppeak), mean power (Pmean ...


The Relationship Of Gender And Self-Efficacy On Social Physique Anxiety Among College Students, Sara M. Rothberger, Brandonn Harris, Daniel Czech, Bridget F. Melton 2015 Georgia Southern University

The Relationship Of Gender And Self-Efficacy On Social Physique Anxiety Among College Students, Sara M. Rothberger, Brandonn Harris, Daniel Czech, Bridget F. Melton

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 234-242, 2015. The anxiety or fear associated with physique evaluation is defined as Social Physique Anxiety (SPA). Numerous studies have examined this construct, yet a gap exists exploring this phenomenon among current college students with SPA, self-efficacy, and gender concurrently. Therefore, the purposes of this study included quantitatively analyzing the association between SPA, gender, and self-efficacy. Participants included 237 students at a Southeastern university participating in jogging, body conditioning, or weight training courses. Analysis of Variance yielded a significant main effect for self-efficacy as well, as those with lower self-efficacy displayed higher levels ...


Trx Suspension Training: A New Functional Training Approach For Older Adults - Development, Training Control And Feasibility, Angus Gaedtke, Tobias Morat 2015 German Sport University Cologne

Trx Suspension Training: A New Functional Training Approach For Older Adults - Development, Training Control And Feasibility, Angus Gaedtke, Tobias Morat

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 224-233, 2015. Because of its proximity to daily activities functional training becomes more important for older adults. Sling training, a form of functional training, was primarily developed for therapy and rehabilitation. Due to its effects (core muscle activation, strength and balance improvements), sling training may be relevant for older adults. However, to our knowledge no recent sling training program for healthy older adults included a detailed training control which is indeed an essential component in designing and implementing this type of training to reach positive effects. The purpose of this study was to ...


The Acute Effects Of Whole-Body Corrective Exercise On Postural Alignment, Nicole Rencher, James D. George, Pat R. Vehrs, Sarah E, Ridge, Gilbert W. Fellingham 2015 Brigham Young University

The Acute Effects Of Whole-Body Corrective Exercise On Postural Alignment, Nicole Rencher, James D. George, Pat R. Vehrs, Sarah E, Ridge, Gilbert W. Fellingham

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 213-223, 2015. This study examined the acute effects of whole-body corrective exercise on postural alignment in a sample of 50 male participants (18-30 y) displaying asymmetrical postural deviations. All participants were randomly assigned to either a nonexercise control (n = 25) or corrective exercise treatment (n = 25) group. A three-dimensional motion analysis Vicon system was employed to quantify standing postural alignment at the beginning and end of a 6 d study. Postural misalignments were determined in degrees of symmetry (tilt) and rotation using horizontal and vertical virtual plumb lines for the following locations: hip ...


Sensitivity Of Prescribing High-Intensity, Interval Training Using The Critical Power Concept, Robert W. Pettitt, Ashley M. Placek, Ida E. Clark, Nicholas A. Jamnick, Steven R. Murray 2015 Minnesota State University, Mankato

Sensitivity Of Prescribing High-Intensity, Interval Training Using The Critical Power Concept, Robert W. Pettitt, Ashley M. Placek, Ida E. Clark, Nicholas A. Jamnick, Steven R. Murray

International Journal of Exercise Science

International Journal of Exercise Science 8(3): 202-212, 2015. The critical power (CP) concept enables the calculation of time to exhaustion (tLIM) for a given power output above CP using the equation of tLIM = W’/(power – CP), where W’ is the curvature constant, and CP is the asymptote for the power-tLIM relationship. The CP concept offers great promise for prescribing high-intensity interval training (HIIT); however, knowledge on the concept’s sensitivity is lacking (i.e., how much of a difference in W’ expenditure is needed to evoke different metabolic responses). We tested if two different power-tLIM ...


The Effects Of Short Work Versus Longer Work Periods Within Intermittent Exercise On Vo2 Kinetics, Muscle Deoxygenation And Energy System Contribution, Michael C. McCrudden 2015 The University of Western Ontario

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 ...


Test-Retest Reliability Of Mune And Mup Analysis From Decomposition-Based Quantitative Electromyography For The Flexor Carpi Radialis Muscle, Saskia R. Knol 2015 The University of Western Ontario

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 ...


Sports For Nathan, Delaney Bales, Joseph Garrett, Chris Harter 2015 California Polytechnic State University - San Luis Obispo

Sports For Nathan, Delaney Bales, Joseph Garrett, Chris Harter

Mechanical Engineering

Nathan Cooper is a local boy with spinal muscular atrophy. He enjoys playing games and being active. One assistive device that Nathan uses is his Standing Dani, a motorized mobile stander. Nathan enjoys playing golf and kickball, and prior to this project he had no way of playing golf and no safe way of playing kickball. The purpose of this project was to design and build a golf attachment for Nathan’s Standing Dani that allows him to putt, and a kickball attachment that allows him to play kickball safely. First, the design team researched and defined the problem in ...


Barriers To Physical Activity And Healthy Eating In Children As Perceived By Low-Income Parents: A Case Study, David W. Hey, Kristina M. Kelly, Stephanie Teaford, Ann Yelmokas McDermott 2015 California Polytechnic State University - San Luis Obispo

Barriers To Physical Activity And Healthy Eating In Children As Perceived By Low-Income Parents: A Case Study, David W. Hey, Kristina M. Kelly, Stephanie Teaford, Ann Yelmokas Mcdermott

Kinesiology

During the past three decades the prevalence of childhood obesity has steadily increased in the United States. Causes of childhood obesity are complex and include numerous individual and environmental factors. The purpose of this study was to determine parent perceptions on the social-ecological barriers (community, school, and family) to physical activity and healthy eating, perceived specific to their children. Self-reported data gathered from a 50-item questionnaire and six focus groups were conducted with parents (n=43) enrolled in the Women, Infants, and Children (WIC) Program. Participants (16 to 67 years old) were predominately female (88.4%), Hispanic (67%), low income ...


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