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Articles 1 - 6 of 6
Full-Text Articles in Sports Sciences
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 Sciences & 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 …