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Articles 211 - 239 of 239
Full-Text Articles in Medicine and Health Sciences
An Examination Of Behavioral And Temporal Consistency Of Pre-Performance Routines In Ncaa Division I Basketball Free Throw Shooting – A Naturalist Observational Investigation, Jacob Blumberg
Electronic Theses and Dissertations
Research has shown that pre-performance routines positively influence performance of closed and self-paced skills (Boutcher & Crews, 1987; Cohn, 1990; Otto et al., 2011). Boutcher and Crews (1987) suggested that pre-performance routines improve performance by helping reduce anxiety along with helping athletes’ retain mental sharpness and focus. Furthermore, several quantitative studies have examined the influence of both behavioral and temporal consistency of pre-performance routines on the success of a skill, yielding inconsistent results (Boutcher & Crews, 1987; Lobmeyer & Wasserman, 1986; Lonsdale & Tam, 2008; Jackson, 2003). However, research examining this phenomenon from a qualitative and naturalistic observational perspective is …
Differential Effects Of Fatigue On Movement Variability, N. Cortes, J. Onate, S. Morrison
Differential Effects Of Fatigue On Movement Variability, N. Cortes, J. Onate, S. Morrison
Rehabilitation Sciences Faculty Publications
When individuals perform purposeful actions to fatigue, there is typically a general decline in their movement performance. This study was designed to investigate the effects exercise-induced fatigue has on lower limb kinetics and kinematics during a side-step cutting task. In particular, it was of interest to determine what changes could be seen in mean amplitude and all metrics of signal variability with fatigue. The results of the study revealed that post-fatigue there was an overall decrease in absolute force production as reflected by a decline in mean amplitude and variability (SD) of the ground reaction forces (GRFV and GRF …
Investigating The Effects Of Endurance Training On Heart Rate Variability In Female Swimmer Athletes, Joshua G. Beck
Investigating The Effects Of Endurance Training On Heart Rate Variability In Female Swimmer Athletes, Joshua G. Beck
Electronic Theses and Dissertations
It is important for elite endurance athletes to have practical and reliable means of measuring fatigue throughout their training. Variations in Autonomic Nervous System activity (ANS) may provide an effective marker of fatigue and of recovery. ANS control of heart rate is well known to be affected by exercise training, and those adaptations can be determined using measures of heart rate variability (HRV). Previous research has examined the effect of training on HRV and ANS control of heart rate in males, there is a lack of any comprehensive studies that address adaptations in female athletes. Therefore, the purpose of this …
An Interval Training Bout On Cognitive Performance In Healthy Adults, David Young
An Interval Training Bout On Cognitive Performance In Healthy Adults, David Young
Electronic Theses and Dissertations
Cognitive performance has been shown to improve with regular aerobic exercise training. Despite this, most Americans do not adhere to current exercise prescription guidelines. High intensity interval training (HIIT) has been suggested as a lower time commitment, more enjoyable alternative to regular aerobic exercise. Twenty nine apparently healthy college-aged adults were recruited and administered a high intensity interval training session with a pre- and 24 hours-post-exercise cognitive performance test. No changes were found in performance following the bout of high intensity interval training. No significant interactions were observed when comparing performance to gender, training age, training goal, or intra-exercise rating …
Landing Technique Assessment Utilizing Laboratory-Based Landing And Simulated Basketball Landing Tasks, Hiromi Kowata
Landing Technique Assessment Utilizing Laboratory-Based Landing And Simulated Basketball Landing Tasks, Hiromi Kowata
Electronic Theses and Dissertations
Context: The Landing Error Scoring System (LESS) is a two-dimensional landing technique assessment tool that is readily available to clinicians. However, the LESS merely assesses a contrived landing, rather than dynamic, complex movements that may occur during actual athletic performance. Objective: To compare the LESS scores and knee joint kinematics between the LESS vertical-drop jump (DVJ), and two simulated basketball landing performances, jump-stop jump shot (JS) and rebounding (RB). Design: Prospective, cross-sectional study. Setting: An intramural basketball court. Participants: Twenty-five female recreational basketball players (Age: 20.96±1.70, Height (cm): 166.07 ± 9.10, Weight (kg): 68.54 ±12.17). Intervention(s) …
The Relationship Of Force Production Asymmetry And Performance In Athletes Of Different Strength Levels, Christopher A. Bailey, Caleb D. Bazyler, Chieh-Ying Chiang, Kimitake Sato, Michael H. Stone
The Relationship Of Force Production Asymmetry And Performance In Athletes Of Different Strength Levels, Christopher A. Bailey, Caleb D. Bazyler, Chieh-Ying Chiang, Kimitake Sato, Michael H. Stone
ETSU Faculty Works
The purpose of this study was to evaluate the relationship between force production asymmetry and performance of athletes with differing strength levels in males and females. Collegiate athletes (n=129) from various sports were ranked according to isometric mid-thigh pull peak force and the top (‘strong’) and bottom (‘weak’) 25% were used for analysis. Symmetry index (SI) scores were calculated and correlated with their respective force-time characteristics using bivariate correlations. For the weaker males, several negative moderate correlations were observed; however, no statistically significant correlations were observed for the females in either group. These findings indicate that force production asymmetry is …
Quantification Of Eccentric Load Using Accelerometer Imbedded In Gps, Chow Chea Yeo
Quantification Of Eccentric Load Using Accelerometer Imbedded In Gps, Chow Chea Yeo
Theses: Doctorates and Masters
Global positioning system (GPS) with a triaxial accelerometer is widely used to monitor movements of athletes in games and training, and “body load” (BL) representing the accumulation of the rate of changes in three planes of movements is obtained to determine the training load of a session. Deceleration, change of directions and stopping require eccentric contractions of leg muscles, potentially causing muscle damage and affecting athletic performance. Thus, it is important to monitor eccentric loading in games and training. A variable known as “eccentric index” (EI) purports to be a better representation of eccentric loading than BL. However, it is …
The Creation And Validation Of A Youth Fundamental Hitting Scale: The Assessment Of Youth Baseball And Softball Hitting Fundamentals And The Perceived Psychological Barriers To Hitting A Pitched Ball, Andrew Walsh
Theses: Doctorates and Masters
The primary purpose of the thesis was to create a hitting scale for youth players that assess the fundamentals of a baseball swing. Secondly, the purpose of this thesis was to determine the interactions between the changes in anxiety, perceived competence and fear variables have with actual hitting competence over a four week sport specific training program.
Acute Physiological Effects And Perceived Enjoyment Of A Single Bout Of Aerobic Interval And Continuous Moderate-Intensity Cycling In Overweight And Obese Individuals, Fujie Koh
Theses: Doctorates and Masters
Aerobic interval training, a form of high intensity interval training, is commonly prescribed to both the general and clinical populations. However, the acute physiological effects from a single bout of aerobic interval session are not fully understood. In training studies, these acute physiological effects may confound actual training adaptations when they occur following the final training session [1]. Furthermore, while recreationally active men perceived aerobic interval training to be more enjoyable than continuous moderate-intensity exercise [2], the preference of overweight and obese individuals has not been extensively researched. Since overweight and obese individuals tend to have lower exercise tolerance, it …
Relative Importance And Plasticity Of Anatomical And Neuromuscular Factors Affecting Joint Torque Production, Joanne C. Trezise
Relative Importance And Plasticity Of Anatomical And Neuromuscular Factors Affecting Joint Torque Production, Joanne C. Trezise
Theses: Doctorates and Masters
The present research aimed to determine (i) the relative influence anatomical and neuromuscular variables on maximal isometric, concentric and eccentric knee extensor torque (Study 1); (ii) whether the change in strength following a 10-week strength training program is associated with changes in specific anatomical and neuromuscular variables (Study 2a); (iii) whether anatomical and neuromuscular adaptations are dependent on their pre-training magnitudes; and (iv) whether it is possible to ‘predict’ an individual’s adaptation to strength training based on their anatomical and neuromuscular pre-training magnitudes (Study 2b).
The variables assessed throughout the studies include muscle cross-sectional area (CSA), fascicle length and angle …
Lower Limb Fatigue Asymmetry Of Preferred And Non-Preferred Legs After A Repeated-Sprint Test In Football Players With Previous Hamstring Injury, Cameron Lord
Theses: Doctorates and Masters
Football is the most widely played sport in the world and is thus associated with the highest total number of injuries of all sports. 12% of all football injuries are to the hamstrings, as this muscle group is subjected to constant stress during training and match play performance (Ekstrand, Hägglund, Waldén, 2011; Woods, Hawkins, Maltby, Hulse, Thomas & Hodson, 2004). While the influence of limb dominance has been extensively examined as a risk factor for injury in upper limb-dominant sports (e.g. badminton, tennis and baseball), little research has focussed on the dominance in the lower limbs. Since almost all footballers …
Comparison Of The Physical, Physiological And Perceptual Demands Of Small-Sided Games And Match Play In Professional Football Players, Stephen Hissey
Comparison Of The Physical, Physiological And Perceptual Demands Of Small-Sided Games And Match Play In Professional Football Players, Stephen Hissey
Theses: Doctorates and Masters
The physical and technical requirements of a range of small-sided football (soccer) games (SSGs) have previously been examined in order to compare their requirements to competitive match play. SSGs are used to combine the technical, tactical and physical components of normal match play in training in order to make the training sessions specific to football. However, most previous research has focused on youth players and it is known that the playing patterns, and thus session outcomes, are different for elite players. Consequently, research examining elite players is required in order to improve our understanding of the use of SSGs in …
The Regulation Of Skeletal Muscle Mass And Mitochondrial Biogenesis By Gp130/Stat3 Signaling During Cancer Cachexia, Melissa Puppa
The Regulation Of Skeletal Muscle Mass And Mitochondrial Biogenesis By Gp130/Stat3 Signaling During Cancer Cachexia, Melissa Puppa
Theses and Dissertations
Cachexia affects nearly 70% of all cancer patients depending on the cancer, and decreases cancer survival. Cachexia is associated with muscle mass loss that is accompanied by a loss in muscle oxidative capacity, a decrease in protein synthesis and an increase in protein degradation. While progress has been made in understanding some of the mechanisms underlying the cachectic condition, there are currently no approved pharmaceutical interventions to slow or stop cachexia progression. The purpose this study was to determine the role of skeletal muscle gp130 and STAT3 signaling in the regulation of cachexia induced muscle atrophy and mitochondrial loss. Specific …
Trunk Coordination In Dancers And Non-Dancers, Danielle N. Jarvis, Jo Armour Smith, Kornelia Kulig
Trunk Coordination In Dancers And Non-Dancers, Danielle N. Jarvis, Jo Armour Smith, Kornelia Kulig
Physical Therapy Faculty Articles and Research
Variability, or how a task changes across trials, may reveal differences between athletes of differing skill levels. The purpose of this study was to examine trunk and lower extremity (LE) single joint kinematic variability and inter-segmental coordination variability in dancers and non-dancers during bipedal vertical dance jumps (sautés). Twenty healthy females, ten with no formal dance training and ten professional dancers, performed 20 consecutive sautés. Single joint kinematic variability was assessed using mean standard deviation of angular displacement, and inter-segmental coordination variability was assessed using angular deviation of the coupling angle between segments. Within the context of the standard error …
Neuromuscular Fatigue Following A Singles Badminton Match, Zengyuan Lin
Neuromuscular Fatigue Following A Singles Badminton Match, Zengyuan Lin
Theses: Doctorates and Masters
A typical badminton singles match involves numerous intense and high impact movements. Lunges were accounted for approximately 15% of overall movements and were believed to presumably induce significant muscle damage following a match. However, no previous study has investigated changes in knee extensor muscle function after a badminton match.The present study investigated changes in knee extensor neuromuscular function and muscle soreness after a simulated 1-h badminton singles match in relation to the number of lunges performed in the match.
Ten state-level male badminton players were recruited (n=10), with each player played a total of eight simulated 1-h matches under the …
Neuromuscular Factors Affecting Stretch-Induced Torque Loss, Gabriel Siqueira Trajano
Neuromuscular Factors Affecting Stretch-Induced Torque Loss, Gabriel Siqueira Trajano
Theses: Doctorates and Masters
The mechanisms underpinning the immediate torque loss induced by acute, static muscle stretching are still not clear. The current research was designed to examine the neuromuscular factors influencing this torque loss. In Study 1, the contributions of central versus peripheral factors to the stretch-induced torque loss were investigated. Measures of central drive, including the EMG amplitude normalised to the muscle compound action potential amplitude (EMG:M), percent voluntary activation (%VA) and first volitional wave amplitude (V:M), and measures of peripheral function, including the twitch peak torque and 20:80 Hz tetanic torque ratio were made before, and immediately and 15 min after …
Understanding And Improving Pacing Strategies During Standard Distance Triathlons In Age Group Athletes, Sam Shi Xuan Wu
Understanding And Improving Pacing Strategies During Standard Distance Triathlons In Age Group Athletes, Sam Shi Xuan Wu
Theses: Doctorates and Masters
Pacing is an integral aspect of performance during all exercise, including multi-sport events such as triathlon. However, to date, the optimal pacing strategies to adopt over an entire triathlon, as well as during each specific discipline (i.e. swim, cycle and run), is not well understood. Therefore, the primary purpose of this thesis was to identify and understand current pacing strategies adopted by highly performing triathletes across different triathlon distances. This research aids in identifying pacing strategies that may improve overall performance during triathlon.
In the first study, the influence of sex and race distance on the age-related declines in the …
Role Of Physical Exercise In Reducing Depression And Improving Mental Health In Cancer Survivors, Gregory Levin
Role Of Physical Exercise In Reducing Depression And Improving Mental Health In Cancer Survivors, Gregory Levin
Theses: Doctorates and Masters
Cancer survivors are more than twice as likely as the general population to suffer the debilitating effects of depression. This comorbid condition is associated with several negative consequences, such as reduction in compliance with cancer treatments, and hastened mortality. Recent research has examined the therapeutic effect of exercise on depression and reported excellent results of similar magnitude to those achieved with pharmacotherapy or psychological intervention. However, no research, to date, has examined the effectiveness of exercise on reducing depression in depressed cancer survivors. In order to address this important question this thesis reviewed previous literature in the area of cancer …
An Investigation Of Technique And Equipment Factors Associated With Clubhead Speed In Golf, Christopher Joyce
An Investigation Of Technique And Equipment Factors Associated With Clubhead Speed In Golf, Christopher Joyce
Theses: Doctorates and Masters
If golfers achieve long hitting distances whilst maintaining their accuracy they will gain a competitive advantage. To increase hitting distance, faster clubhead speed is required and this can potentially be achieved through a number of factors. Firstly, anthropometric factors such as height and physical factors such as trunk rotational power have been previously considered to be of importance. However, biomechanical factors such as; the X-factor (separation of the trunk-pelvis alignment when viewed in the transverse plane), have been a major focus of recent research. Further, the interaction of the golfer with the implement they hit with i.e. the golf club …
Mechanisms Affecting Post-Activation Potentiation Following Voluntary Isokinetic Knee Extension, Laurent B. Seitz
Mechanisms Affecting Post-Activation Potentiation Following Voluntary Isokinetic Knee Extension, Laurent B. Seitz
Theses: Doctorates and Masters
The present research was designed to: 1) determine whether the voluntary PAP effects commonly observed after conditioning activity (CA; i.e. muscular contraction prior to a ‘test’ contraction) are a consequence of acute neuromuscular alterations relating to the CA itself, or whether they simply reflect warm-up and/or familiarisation effects; 2) clarify the influence of the contraction velocity, duration and total work characteristics of the CA on voluntary PAP; 3) determine the factors allowing stronger individuals to express higher level of voluntary PAP; and 4) determine the peripheral and central mechanisms of voluntary PAP in human skeletal muscle. In Study 1, the …
Pain Assessment And Possible Mechanism Of Delayed Onset Muscle Soreness, Wing Yin Lau
Pain Assessment And Possible Mechanism Of Delayed Onset Muscle Soreness, Wing Yin Lau
Theses: Doctorates and Masters
Muscle pain is felt during exercise or daily activities for several days after performing unaccustomed exercise, which is referred to as delayed onset muscle soreness (DOMS). Many people experience DOMS, but its underlying mechanisms are not fully understood. One of the challenges in the investigation of DOMS is its subjective nature, which makes the assessment ambiguous, thus establishing a standardised protocol is necessary. The present thesis scrutinised muscle pain assessments (Study 1, Study 2), developed a new assessment of muscle pain focusing on muscle fascia (Study 3), and investigated why DOMS is reduced after the second than the first bout …
A Series Of Studies Examining The Development Of Sprint Speed And Momentum Of International Rugby Union Players, Matthew John Barr
A Series Of Studies Examining The Development Of Sprint Speed And Momentum Of International Rugby Union Players, Matthew John Barr
Theses: Doctorates and Masters
Sprinting speed is a highly valued physical ability in rugby. There is little research examining sprinting biomechanics in rugby players and it is unclear the extent that sprinting speed and sprint momentum can even be improved in highly trained rugby players and how different speed and strength training methods might help improve it. This thesis consists of 6 studies that examine the sprinting biomechanics of elite rugby players, how strength and power training might improve sprinting speed and the potential for elite rugby players to make further improvement in their sprinting speed and sprint momentum.
Key biomechanical factors were that …
Concussions: Education For Coaches And Safe Return To Play For Athletes, Catherine Fettkether
Concussions: Education For Coaches And Safe Return To Play For Athletes, Catherine Fettkether
Honors Program Theses
Head injuries can occur due to a variety of reasons, including falls, auto accidents, and contact sports. In 2010 the Center for Disease Control reported that 2.5 million traumatic brain injuries occurred in the United States. Any injury the body sustains requires that a person take the appropriate steps to have the most successful outcome. Appropriate action with an injury is not just limited to recovery, but being aware of the potential injury and acting accordingly. This is even more important when the injury is sustained by the brain. A situation in which brain injuries are becoming a larger issue …
Nutrition Knowledge And Interest Of Collegiate Athletes At A Division I University, Carrie Hamady, Jeff Gilis, Dawn Anderson, Amy Morgan
Nutrition Knowledge And Interest Of Collegiate Athletes At A Division I University, Carrie Hamady, Jeff Gilis, Dawn Anderson, Amy Morgan
Carrie Hamady, MS, RD, LD
No abstract provided.
Comparison Of Static And Countermovement Jump Variables In Relation To Estimated Training Load And Subjective Measures Of Fatigue, Matthew Sams, Satoshi Mizuguchi, Brad Deweese, Kimi Sato
Comparison Of Static And Countermovement Jump Variables In Relation To Estimated Training Load And Subjective Measures Of Fatigue, Matthew Sams, Satoshi Mizuguchi, Brad Deweese, Kimi Sato
Matthew L Sams
The purpose of this study was to compare changes in static and countermovement jump variables across a competitive season of collegiate soccer to estimated training load and subjective measures of fatigue. Monitoring data from 21 male collegiate soccer players were retrospectively examined. Nine vertical jump sessions occurred across the season in addition to daily training load assessment and daily mood-state assessment. Group average changes from the first testing session were calculated and compared to the group average training load for the 7 days preceding each vertical jump testing session for static and countermovement jump height and allometrically scaled peak power. …
The Psychology Of Football During The Early Years Of Sport Psychology, Alan Kornspan
The Psychology Of Football During The Early Years Of Sport Psychology, Alan Kornspan
Alan S Kornspan
No abstract provided.
Ua Scholar Poster Final.Ppt, Mary Jo Maccracken
Ua Scholar Poster Final.Ppt, Mary Jo Maccracken
Dr. Mary J. MacCracken
Comprehensive Psychology-2014-Stadulis-07.13.Cp.3.12.Pdf, Robert E. Stadulis, Angela Neal-Barnett, Mary Jo Maccracken, Lisa Fender-Scarr
Comprehensive Psychology-2014-Stadulis-07.13.Cp.3.12.Pdf, Robert E. Stadulis, Angela Neal-Barnett, Mary Jo Maccracken, Lisa Fender-Scarr
Dr. Mary J. MacCracken
Career Maturity And College Student-Athletes: A Comprehensive Review Of Literature, Alan S. Kornspan
Career Maturity And College Student-Athletes: A Comprehensive Review Of Literature, Alan S. Kornspan
Alan S Kornspan
36 studies completed over four decades related the career maturity of college student-athletes are reviewed.