Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 18 of 18 for “"knee flexion angle"”.
-
Using a Single inertial measurement unit to measure the knee flexion angle at touchdown in side cutting movements
Joint angles can be an important measure in investigating sport-related injuries as well as in rehabilitation studies. Even though previous researchers have investigated using inertial measurement units to calculate joint angles, only a few studies can be found that were conducted using a single …
-
Impact of Sex and Stretch-Shortening Cycle Induced-Fatigue on Limb Stiffness and Limb Stiffness Asymmetry During the Stop-Jump
… the onset of fatigue. Asymmetry values for peak knee flexion angle, absolute value of knee flexion angle at initial contact (IC), and loading rate were also assessed before and after fatigue. Significant interactions for asymmetry values of peak knee flexion angle and absolute value of knee …
-
Biomechanical Determinants of Altered Knee Joint Loads After 18 Months of Intensive Weight Loss
… the biomechanical determinants of altered knee joint loads consequent to 18 months of an intensive dietary intervention either with or without exercise. Our primary hypothesis was that weight loss and quadriceps force would have the strongest, positive associations with each of the knee …
-
The biomechanical demands of snowboard landings in training with elite freestyle snowboard athletes
… Measures including; landing acceleration (g), knee flexion angle (deg), knee angular velocity (d/sec) and integrated electromyography (iEMG) in muscles of the upper-thigh (bicep femoris, rectus femoris, semitendinosus, vastus lateralis, and vastus medialis), in pre and post-initial contact (IC) …
-
Evaluation of movement variability and knee biomechanics during functional sporting tasks in healthy individuals and individuals following Anterior Cruciate Ligament Injury (ACL) and ACL reconstruction
… which can occur during some sporting activities. Knee biomechanics and movement variability (MV) comprise two very important aspects relating to injury risk, where it has been suggested that the latter may play a role in ACL injury. AimThe aims of this thesis were: to investigate MV and knee …
-
Integrated Prosthetic Leg Design Frameworks for People with an Above-Knee Amputation
… low-cost, high biomechanical performance above-knee prosthetic leg components (prosthetic foot and knee) that will result in a walking motion likely to be perceived as able-bodied after minimal acclimation time. Above-knee amputees have two common gait deviations from able-bodied and below-knee …
-
Functional tasks before and after an anterior cruciate ligament (ACL) reconstruction : are there mechanical differences?
… to an increased risk of osteoarthritis (OA). Knee instability and functional adaptations are likely to occur following injury to the ACL, despite many ACL-deficient (ACLD) patients displaying no, or minimal, visible impairment. ACL reconstruction (ACLR) is the most common form of treatment for …
-
Hip and Knee Biomechanics for Transtibial Amputees in Gait, Cycling, and Elliptical Training
… are at increased risk of contralateral hip and knee joint osteoarthritis, likely due to abnormal biomechanics. Biomechanical challenges exist for transtibial amputees in gait and cycling; particularly, asymmetry in ground/pedal reaction forces and joint kinetics is well documented and …
-
Relationships between throwing velocity and selected kinematics in youth baseball players
… available Dartfish software. Trunk side bend and knee flexion angle at foot contact, and trunk flexion, knee flexion, and knee extension velocity at ball release were calculated. Intra-rater reliability of ten re-digitized trials using Pearson’s inter-item correlation was very high (r = 0.99, p < …
-
Intrinsic factors, performance and dynamic kinematics in optimisation of cycling biomechanics
… static and dynamic measures of the ankle, knee, hip, shoulder and elbow. Nineteen subjects performed three separate trials of a 10min duration at a fixed workload (70% of peak power output). Static measures were taken with a standard goniometer (GM), an inclinometer (IM) and dynamic three …
-
Landing Technique Assessment Utilizing Laboratory-Based Landing And Simulated Basketball Landing Tasks
… 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). <strong>Design</strong>: Prospective, cross-sectional study. Setting: An intramural …
-
The Influence of Heel Height on Sagittal Plane Knee Kinematics during Landing Tasks in Recreationally Active Collegiate Females
… to athletic shoe wear would alter sagittal plane knee kinematics when landing from jumping maneuvers. The hypothesis was that increased heel height would increase knee flexion at initial contact (KAIC), increase the peak knee flexion angle (KAPeak), and slow the rate of knee excursion (RKE). Fifty …
-
The effect of change of direction angle on kneeand hip biomechanics : implications foranterior cruciate ligament injury
… frequently occur without contact. Changes in the knee valgus (abduction) angle and knee valgus (external abduction) moment and limb asymmetry have been linked to greater risk of ACLinjury. Change of direction (COD) manoeuvres are important for many field sports, however they are unfortunately …
-
A randomised control trial for the restoration of functional ability in patients post total knee arthroplasty: Eccentric versus concentric cycling ergometry
Introduction: While the total knee arthroplasty procedure improves joint-specific outcomes, including pain and range of movement, functional deficits post-surgery has been noted. Movement abnormalities and quadriceps weakness of the operated limb, as well as a decrease in strength on the …
-
The effects of pubertal maturation and sex on biomechanics associated with risk of anterior cruciate ligament injury
… (ACL) injuries account for 45% of internal knee injuries and are burdensome to society due to prolonged recovery times, substantial costs of care, functional movement impairments, and an increased risk of early-onset posttraumatic osteoarthritis. Non-contact ACL injury occurrence rates are …
-
THE INFLUENCE OF THE BACK FUNCTIONAL LINE ON LOWER EXTREMITY FRONTAL PLANE KINEMATICS AND KINEMATIC PREDICTORS OF LOADING DURING RUNNING
… of kinetics, specifically foot inclination angle at initial contact and vertical COM displacement. Twenty healthy recreational runners (10 M; 10 F) participated in this study. Male runners tended to be slighter older with a higher weekly running mileage and longer running history. All …
-
Neuromuscular Fatigue and Biomechanical Alterations during High-Intensity, Constant-Load Cycling
… in muscle activation and both lower (i.e. hip, knee and ankle joint) and upper (i.e. trunk) limb kinematics were examined during a high-intensity cycling time to exhaustion (TTE) test. This was performed at 90% maximal aerobic power (Pmax) with nine well-trained cyclists. Temporal relationships …
-
Bilateral and unilateral resistance training and athletic performance
… displacement, concentric duration, and maximum knee flexion angle were reliable (CV% < 10%, ICC > 0.75). For the squat, measures of peak and average velocity were reliable (CV < 10%) whilst step-up velocity measures were less reliable (CV%0.60). Reliability findings permitted confident …