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Articles 91 - 119 of 119
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Accuracy In The Badminton Short Serve: A Methodological And Kinematic Study, Shayne Marc Vial
Accuracy In The Badminton Short Serve: A Methodological And Kinematic Study, Shayne Marc Vial
Theses: Doctorates and Masters
In sports, accuracy is an essential component of actions such passing, shooting, and aiming. Executing a movement or action that requires a high degree of accuracy is a critical determinant of success in many individual and team sports. Each sport has different methods for evaluating accuracy, however an overarching goal is to determine whether an object hits its target, or assess the distance by which it misses. However, in some sports accuracy is not readily measureable because an object might not reach a target, i.e. the object is intercepted, or it collides with another object or a person, or an …
The Influence Of Hip Mobility And Fatigue On Spinal Flexion And Muscle Activation In Rugby Scrum Performance, Joshua D. Clayton
The Influence Of Hip Mobility And Fatigue On Spinal Flexion And Muscle Activation In Rugby Scrum Performance, Joshua D. Clayton
Theses and Dissertations (Comprehensive)
Introduction: Rugby scrumming is a means of restarting play following a minor rule infringement that can occur up to 28 times per game. The scrum poses a significant injury risk, with more days missed due to injury per event than any other rugby activity. Rugby players also have a significantly higher rate of spine injury than the general population, perhaps due to flexion in combination with high compression forces, which has been cited as the main mechanism of injury. Flexion of the spine has also been associated with poor hip mobility and quadriceps fatigue in other athletic tasks and may …
Biomechanical Investigation Of Elite Place-Kicking, Chase M. Pfeifer
Biomechanical Investigation Of Elite Place-Kicking, Chase M. Pfeifer
Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research
Many studies aim to understand the fundamentals of kicking commonly displayed by soccer players [4,6,10,16,17,18,24,25,28,29,30,34,36,38,40]. Of those studies, most are limited to a two-dimensional (2D) analysis using high-speed cameras for position tracking or utilizing electromyography to observe the activity of select muscles [4,6,18,25,29,36]. The few studies that investigate kicking using a three-dimensional (3D) model are limited in their position tracking capabilities and focus mainly on joint flexion potentials and foot speed.
This dissertation is a comprehensive biomechanical analysis (kinematic and EMG) of the field-goal place-kicking techniques of four elite kickers in American football. Data were compared and contrasted with ball …
Biomechanical Analysis Of Race Walking Compared To Normal Walking And Running Gait, Jaclyn D. Norberg
Biomechanical Analysis Of Race Walking Compared To Normal Walking And Running Gait, Jaclyn D. Norberg
Theses and Dissertations--Kinesiology and Health Promotion
Human locomotion is phenomenon that is extraordinarily complex. It is evident that a complete description of locomotion involves consideration of kinematics, kinetics, and muscle activity of the extremities in all of their various movements. Race walking (RW) is a form of upright locomotion that differs from normal walking and running by its form dictated by the International Amateur Athletics Federation (IAAF). Despite the similarities to both normal walking (NW) and running (RU), RW has not been the subject of equally intensive investigations.
This study explores the comprehensive biomechanics of race walking and how it compares to NW and RU. A …
Influence Of Traditional And Nontraditional Entries On Figure Skating Jumps, Bryanna L. Nevius
Influence Of Traditional And Nontraditional Entries On Figure Skating Jumps, Bryanna L. Nevius
Undergraduate Review
The purpose of this study was to determine whether or not adding a non-traditional jump entry into a routine is more beneficial to the skater or if there is more value in performing the same jump with a traditional entry. Specifically, the study examined the kinematics of a non-traditional verses a traditional jump entry by looking at the angles of the hip, knee, and ankle joints at take-off and landing. Maximum jump height, airtime, and horizontal displacement were also examined. It was hypothesized that non-traditional entries would change jump kinematics when compared to the same jumps performed from traditional entries. …
Quantifying And Comparing The Head Impact Biomechanics Of Different Player Positions For Canadian University Football, Kody Campbell
Quantifying And Comparing The Head Impact Biomechanics Of Different Player Positions For Canadian University Football, Kody Campbell
Electronic Thesis and Dissertation Repository
Differences between Canadian and American football could affect the magnitudes of head impacts and risk of concussion to Canadian players. This study sought to quantify and compare the number, magnitude, and location of impacts that Canadian University football players of different positions experienced during games and practice in a season. A kinematic measuring device collected the linear accelerations and rotational velocities of the head from impacts experienced by players competing in practices and games. The impact magnitudes that were experienced in games were significantly larger than in practice. The offensive back position and wide receiver position had significantly larger peak …
Delivery And Pitch Type Alter Ground Reaction Forces In Baseball Pitching, Garrett Kass
Delivery And Pitch Type Alter Ground Reaction Forces In Baseball Pitching, Garrett Kass
Featured Research
Ground reaction forces (GRFs) exerted on a pitcher in reaction to the push of their legs against the ground create torques about the center-of-mass (CM) and generate the angular momentum necessary to rotate the body, including the segments of the throwing arm. Thus examination of GRFs provides insight into the causal mechanisms responsible for segmental rotation in baseball pitching. PURPOSE: To determine the effects of delivery [wind-up (WU) vs. stretch (ST)] and pitch type [fastball (FB) vs. change-up (CU)] on GRFs in pitching. METHODS: Eight collegiate baseball pitchers (4 right-handed and 4 left-handed) provided voluntary informed consent and threw maximal …
Is There A Relationship Between Hip Structure, Hip Muscle Strength, And Lower Extremity Frontal Plane Kinematics During Treadmill Running?, Michael William Robinson Baggaley
Is There A Relationship Between Hip Structure, Hip Muscle Strength, And Lower Extremity Frontal Plane Kinematics During Treadmill Running?, Michael William Robinson Baggaley
Theses and Dissertations--Kinesiology and Health Promotion
INTRODUCTION: Excessive hip adduction (HADD) has been associated with a number of lower extremity overuse injuries, and it has been suggested that it may be the result of reduced strength of the hip abduction musculature. Hip structure has been postulated to influence both hip abduction (HABD) strength and HADD. The purpose of this study was to investigate the relationship between hip structure, HABD strength, and frontal plane kinematics during running. METHODS: Peak isometric HABD strength, lower extremity kinematics, femoral neck-shaft angle (NSA), and pelvis width-femur length (pw-fl) ratio were recorded for 25 female subjects. Pearson correlations (P < .05) were performed between variables. RESULTS: A fair relationship was observed between femoral NSA and HABD strength (r = …
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 …
Effects Of Lateral Shoe Wedges And Toe-In Foot Progression Angles On The Biomechanics Of Knee Osteoarthritis During Stationary Cycling, Jacob Kale Gardner
Effects Of Lateral Shoe Wedges And Toe-In Foot Progression Angles On The Biomechanics Of Knee Osteoarthritis During Stationary Cycling, Jacob Kale Gardner
Doctoral Dissertations
Exercise is important for individuals with knee osteoarthritis (OA) but certain activities can be painful and discourage participation. Cycling is commonly prescribed for OA but practically no previous literature exists. Due to their altered knee kinematics, OA patients may be at greater risk of OA progression or other knee injuries during cycling. The purpose of Study One was to investigate the effects of lateral wedges on knee joint biomechanics and pain in patients with medial compartment knee OA. The purpose of Study Two was to investigate the effects of toe-in foot progression angles on the same variables. Thirteen OA subjects …
Correlations Between Internal And External Power Outputs During Weightlifting Exercise, Kristof Kipp, Chad Harris, Michelle B. Sabick
Correlations Between Internal And External Power Outputs During Weightlifting Exercise, Kristof Kipp, Chad Harris, Michelle B. Sabick
Exercise Science Faculty Research and Publications
Identifying loads that maximize mechanical power is important because training at such loads may optimize gains in dynamic athletic performance. The purpose of this study was to examine correlations between measures of external mechanical power output and internal mechanical joint power output across different loads during a weightlifting exercise. Ten subjects performed 3 sets of the clean exercise at 65, 75, and 85% of 1 repetition maximum (1RM). Peak external mechanical power output was calculated with 4 commonly used methods, whereas an inverse dynamics approach was used to calculate peak internal mechanical power output for the hip, knee, and ankle …
A Feedback Inclusive Neuromuscular Training Program Alters Frontal Plane Kinematics, Eric K. Greska, Nelson Cortes, Bonnie L. Van Lunen, James A. Oñate
A Feedback Inclusive Neuromuscular Training Program Alters Frontal Plane Kinematics, Eric K. Greska, Nelson Cortes, Bonnie L. Van Lunen, James A. Oñate
Rehabilitation Sciences Faculty Publications
-Anterior cruciate ligament (ACL) neuromuscular training programs have demonstrated beneficial effects in reducing ACL injuries, yet further evaluation of their effects on biomechanical measures across a sports team season is required to elucidate the specific factors that are modifiable. The purpose of this study was to evaluate the effects of a 10-week off-season neuromuscular training program on lower extremity kinematics. Twelve Division I female soccer players (age: 19.2 ± 0.8 years, height: 1.67 ± 0.1 m, weight: 60.2 ± 6.5 kg) performed unanticipated dynamic trials of a running stop-jump task pretraining and posttraining. Data collection was performed using an 8-camera …
Identifying Gait Abnormalities In Patients With Femoroacetabular Impingement Syndrome, Brook A. Russell
Identifying Gait Abnormalities In Patients With Femoroacetabular Impingement Syndrome, Brook A. Russell
Electronic Thesis and Dissertation Repository
OBJECTIVE: To determine the biomechanical gait characteristics and quality of life of adults with femoroacetabular impingement (FAI) and how their gait compares to the gait of healthy controls. METHODS: Gait analyses were performed on 18 participants (9 FAI, 9 control) while walking barefoot in the Wolf Orthopeadic Biomechanics Lab. In addition, FAI participants completed general and region specific quality of life questionnaires. RESULTS: Hip moment (5.2%BW*ht vs. 4.96%BW*ht), toe out angle (12.36 ° vs. 8.15°), and lateral (3.55° vs. 2.18°) and forward (4.34° vs. 3.93°) pelvic tilt were not statistically different between groups. Trunk lean (1.33° vs. 0.36°), hip flexion …
Biomechanical Differences Of Two Common Football Movement Tasks In Studded And Non-Studded Shoe Conditions On Infilled Synthetic Turf, Elizabeth Anne Brock
Biomechanical Differences Of Two Common Football Movement Tasks In Studded And Non-Studded Shoe Conditions On Infilled Synthetic Turf, Elizabeth Anne Brock
Masters Theses
The purpose of this study was to examine kinematic and kinetic differences in three shoe conditions (traditional football shoes with natural and synthetic turf studs and a neutral running shoe) during two common football movements (a 180° cut and a land-cut movement) on infilled synthetic turf. Fourteen recreational male football players performed five trials in all three shoe conditions for a 180° cut as well as a land-cut maneuver. The kinematic and kinetic variables were analyzed with a 3 x 2 (shoe x movement) repeated measures analysis of variance (ANOVA, p<0.05). Peak free moment was significantly greater for the land-cut trials (p<0.001). Vertical GRFs were significantly greater for the land-cut trials (p<0.001). A cleat x movement interaction was seen for time to vertical impact GRF (p=0.048). A cleat main effect was found for time to vertical impact between natural turf cleat and synthetic turf cleat (p=0.019). Vertical loading rate was significantly greater in land-cut trials. Peak medial GRFs showed a significant cleat x movement interaction (p=0.002). The results from this study suggest that land-cut movement elicit greater vertical GRF and vertical impact loadings rates. The running shoe had significantly less dorsiflexion range of motion (ROM) than the synthetic turf studs. A significant cleat main effect was found for peak eversion velocity (p=0.005). Post hoc comparisons showed that it was significantly smaller in shoe than that natural turf stud (p=0.016) and synthetic turf stud (p=0.002). In general, there was a lack of differences between the shoe conditions for GRFs and kinematic variables. For the 180° cut movement, natural turf studs produced lowest peak medial GRF compared to the synthetic turf studs and the shoe. The results from this study suggest that land-cut movement elicit greater vertical GRF and vertical impact loadings rates. In general, there was a lack of differences of GRFs and kinematic variables between the shoe conditions. For the 180° cut movement, natural turf studs produced lowest peak medial GRF compared to the synthetic turf studs and the shoe. Overall, increased GRFs, especially in combination with rapid change of direction and deceleration may increase the chance of injury.
Weightlifting Performance Is Related To Kinematic And Kinetic Patterns Of The Hip And Knee Joints, Kristof Kipp, Josh Redden, Michelle B. Sabick, Chad Harris
Weightlifting Performance Is Related To Kinematic And Kinetic Patterns Of The Hip And Knee Joints, Kristof Kipp, Josh Redden, Michelle B. Sabick, Chad Harris
Exercise Science Faculty Research and Publications
The purpose of this study was to investigate the correlations between biomechanical outcome measures and weightlifting performance. Joint kinematics and kinetics of the hip, knee, and ankle were calculated while 10 subjects performed a clean at 85% of 1 repetition maximum (1RM). Kinematic and kinetic time-series patterns were extracted with principal components analysis. Discrete scores for each time-series pattern were calculated and used to determine how each pattern was related to body mass–normalized 1RM. Two hip kinematic and 2 knee kinetic patterns were significantly correlated with relative 1RM. The kinematic patterns captured hip and trunk motions during the first pull …
Center Of Pressure Excursion During The Golf Putting Stroke In Low, Mid And High Handicap Golfers, Ashley K. Richardson, Gerwyn Hughes, Andrew C.S. Mitchell
Center Of Pressure Excursion During The Golf Putting Stroke In Low, Mid And High Handicap Golfers, Ashley K. Richardson, Gerwyn Hughes, Andrew C.S. Mitchell
Kinesiology (Formerly Exercise and Sport Science)
Golf handicap is significantly correlated to putting performance with low handicap golfers (LH) demonstrating increased putting accuracy compared with high handicap golfers (HH). Smaller center of pressure excursion (CPE) during putting has been demonstrated by LH golfers, suggesting balance is important during successful putts. The aim of this study was to examine CPE in low, mid and high handicap golfers about the mediolateral axis (ML) and anteriorposterior axis (AP). Nineteen subjects participated in the study; subjects were split into LH, mid handicap and HH groups. Subjects completed five successful 2.5m putts, standing on an RS FootScan. The LH group demonstrated …
Swing And Launch Parameters In Approach-Iron Shots Hit With Varying Height And Trajectory In Golf, Samuel J. Robertson, Angus Burnett
Swing And Launch Parameters In Approach-Iron Shots Hit With Varying Height And Trajectory In Golf, Samuel J. Robertson, Angus Burnett
Research outputs 2012
The first aim of this study was to determine whether relationships existed between variability of swing and launch parameters and variability in shot outcome for straight golf shots. The second aim was to determine whether differences existed for swing and launch parameters in shots intentionally played with varying height and trajectory. Elite (n=20) and high-level amateur (n=22) golfers hit; 1) five straight shots of normal height and 2) nine shots of differing height (low, normal, high) and trajectory (straight, draw, fade). Variability of club attack angle, face angle and ball spin axis was significantly associated (p
A Functional Agility Short-Term Fatigue Protocol Changes Lower Extremity Mechanics, Nelson Cortes, David Quammen, Shawn Lucci, Eric Greska, James Onate
A Functional Agility Short-Term Fatigue Protocol Changes Lower Extremity Mechanics, Nelson Cortes, David Quammen, Shawn Lucci, Eric Greska, James Onate
Human Movement Studies & Special Education Faculty Publications
The purpose of this study was to evaluate the effects of a functional agility fatigue protocol on lower extremity biomechanics between two unanticipated tasks (stop-jump and sidestep). The subjects consisted of fifteen female collegiate soccer athletes (19 ± 0.7 years, 1.67 ± 0.1 m, 61.7± 8 kg) free of lower extremity injury. Participants performed five trials of stop-jump and sidestep tasks. A functional short-term agility protocol was performed, and immediately following participants repeated the unanticipated running tasks. Lower extremity kinematic and kinetic values were obtained pre and post fatigue. Repeated measures analyses of variance were conducted for each dependent variable …
Strength And Hypertrophy Responses To Constant And Decreasing Rest Intervals In Trained Men Using Creatine Supplementation, Tacito P. Souza-Junior, Jeffrey M. Willardson, Richard Bloomer, Richard D. Leite, Steven J. Fleck, Paulo R. Oliveira, Robert Simao
Strength And Hypertrophy Responses To Constant And Decreasing Rest Intervals In Trained Men Using Creatine Supplementation, Tacito P. Souza-Junior, Jeffrey M. Willardson, Richard Bloomer, Richard D. Leite, Steven J. Fleck, Paulo R. Oliveira, Robert Simao
Faculty Research and Creative Activity
The purpose of the current study was to compare strength and hypertrophy responses to resistance training programs that instituted constant rest intervals (CI) and decreasing rest intervals (DI) between sets over the course of eight weeks by trained men who supplemented with creatine monohydrate (CR).
Strength And Hypertrophy Responses To Constant And Decreasing Rest Intervals In Trained Men Using Creatine Supplementation, Tacito P. Souza-Junior, Jeffrey M. Willardson, Richard Bloomer, Richard D. Leite, Steven J. Fleck, Paulo R. Oliveira, Robert Simao
Strength And Hypertrophy Responses To Constant And Decreasing Rest Intervals In Trained Men Using Creatine Supplementation, Tacito P. Souza-Junior, Jeffrey M. Willardson, Richard Bloomer, Richard D. Leite, Steven J. Fleck, Paulo R. Oliveira, Robert Simao
Jeffrey Willardson
The purpose of the current study was to compare strength and hypertrophy responses to resistance training programs that instituted constant rest intervals (CI) and decreasing rest intervals (DI) between sets over the course of eight weeks by trained men who supplemented with creatine monohydrate (CR).
The Effect Of Technique Instruction On Biomechanical Risk Factors Associated With Acl Injury Risk In Female Recreational Athletes, Jeremiah Jackson Tate
The Effect Of Technique Instruction On Biomechanical Risk Factors Associated With Acl Injury Risk In Female Recreational Athletes, Jeremiah Jackson Tate
Doctoral Dissertations
Background: Epidemiological studies have demonstrated higher ACL injury rates in female athletes when compared to males involved in the same sport. A recent meta-analysis of ACL injury prevention programs found that technique training was a common component of programs that were successful in reducing ACL injury.
Purpose: The primary purpose was to determine the immediate and long-term effects of technique training aimed at minimizing medial knee displacement during jump-landings in female recreational athletes. The secondary purpose was to determine if any transfer of skill occurred as a result of our technique training.
Study Design: Controlled laboratory study.
Methods: A total …
A Kinematic Analysis Of A Strongman-Type Event: The Heavy Sprint-Style Sled Pull, Justin Keogh, Craig Newlands, Sandra Blewett, Amenda Payne, Lin Chun-Er
A Kinematic Analysis Of A Strongman-Type Event: The Heavy Sprint-Style Sled Pull, Justin Keogh, Craig Newlands, Sandra Blewett, Amenda Payne, Lin Chun-Er
Justin Keogh
This study sought to (a) characterize the kinematics aspects of a popular strongman-type event, the heavy sprint-style sled pull, and (b) gain some insight into the kinematic factors that could distinguish the within- and between-subjects' fastest and slowest trials. Six resistance-trained subjects with experience in the heavy sled pull gave informed consent to participate in this study. Subjects performed three 25-m sets of sled pulls with a load of 171.2 kg with 3 minutes of rest between sets. Kinematic variables were obtained from 2 video cameras positioned perpendicularly 11 m from the intended direction of the sled pull. Camera 1 …
A Brief Description Of The Biomechanics And Physiology Of A Strongman Event: The Tire Flip, Justin W.L. Keogh, Amenda L. Payne, Brad B. Anderson, Paul J. Atkins
A Brief Description Of The Biomechanics And Physiology Of A Strongman Event: The Tire Flip, Justin W.L. Keogh, Amenda L. Payne, Brad B. Anderson, Paul J. Atkins
Justin Keogh
The purpose of this study was to (a) characterize the temporal aspects of a popular strongman event, the tire flip; (b) gain some insight into the temporal factors that could distinguish the slowest and fastest flips; and (c) obtain preliminary data on the physiological stress of this exercise. Five resistance-trained subjects with experience in performing the tire flip gave informed consent to participate in this study. Each subject performed 2 sets of 6 tire flips with a 232-kg tire with 3 minutes of rest between sets. Temporal variables were obtained from video cameras positioned 10 m from the tire, perpendicular …
The Effects Of Opposition And Gender On Knee Kinematics And Ground Reaction Force During Landing From Volleyball Block Jumps, Gerwyn Hughes, James Watkins, Nick Owen
The Effects Of Opposition And Gender On Knee Kinematics And Ground Reaction Force During Landing From Volleyball Block Jumps, Gerwyn Hughes, James Watkins, Nick Owen
Kinesiology (Formerly Exercise and Sport Science)
The aim of the study was to examine the effect of opposition and gender on knee kinematics and ground reaction force during landing from a volleyball block jump. Six female and six male university volleyball players performed two landing tasks 1) an unopposed and 2) an opposed volleyball block jump and landing. Knee kinematics were recorded by a 12 camera motion analysis system (120 Hz) and ground reaction force was recorded by a force platform (600 Hz) during landing. The results showed a significant effect for level of opposition in peak normalized GRF (p = .04), knee flexion at ground …
The Effectiveness Of A Specialized Upper Body Stretching Protocol On Ncaa Division I Athletes, Brandon M. Howard
The Effectiveness Of A Specialized Upper Body Stretching Protocol On Ncaa Division I Athletes, Brandon M. Howard
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Previous studies with college athletes determined that the shoulder girdle plays a vital role in a variety of athletic activities. The previous research showed that a decrease in shoulder range of motion (ROM) was associated with a higher risk injury. Decreased shoulder ROM was shown to be a primary reason that many athletes were unable to perform many overhead lifting variations within their strength and conditioning programs.
The purpose of this research was to evaluate a group of athletes by means of a postural assessment using the overhead squat test. This study consisted of a pretest-post test control group design. …
Isbs '99 : Xvii International Symposium On Biomechanics In Sports, June 30-July 6, 1999, Edith Cowan University, Perth, Western Australia: Swimming, Ross Sanders (Ed.)
Isbs '99 : Xvii International Symposium On Biomechanics In Sports, June 30-July 6, 1999, Edith Cowan University, Perth, Western Australia: Swimming, Ross Sanders (Ed.)
Research outputs pre 2011
No abstract provided.
Xvii International Symposium On Biomechanics In Sports, June 30-July 6, 1999, Edith Cowan University, Perth, Western Australia: Fundamental Skills, Ross Sanders (Ed.)
Xvii International Symposium On Biomechanics In Sports, June 30-July 6, 1999, Edith Cowan University, Perth, Western Australia: Fundamental Skills, Ross Sanders (Ed.)
Research outputs pre 2011
No abstract provided.
Isbs '99 : Xvii International Symposium On Biomechanics In Sports, June 30-July 6, 1999, Edith Cowan University, Perth, Western Australia: Acrobatics, Spiros Prassas (Ed.)
Isbs '99 : Xvii International Symposium On Biomechanics In Sports, June 30-July 6, 1999, Edith Cowan University, Perth, Western Australia: Acrobatics, Spiros Prassas (Ed.)
Research outputs pre 2011
No abstract provided.
Is There A Difference In Cortical Representation Between Dominant And Non-Dominant Arm Muscles Of Elite Badminton Players?, Dylan J. Edwards
Is There A Difference In Cortical Representation Between Dominant And Non-Dominant Arm Muscles Of Elite Badminton Players?, Dylan J. Edwards
Theses : Honours
Training for sport involves the development of skill and coordination. The physiological changes associated with skill acquisition are complex and at present poorly understood. One of the areas in the central nervous system thought to be involved with skill acquisition is the cerebral motor cortex where localised areas are responsible for controlling specific muscle groups. Learning or improving a motor skill may require reorganisation of the cortical areas controlling relevant muscles to accommodate the new skill. To test this idea we studied a group of elite badminton players that were highly skilled in their dominant playing arm. Transcranial magnetic stimulation …