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.
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Showing 1 to 20 of 48 for “"Force Platform"”.
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Comparing pressure measurement systems and a force platform as tools for equine gait analysis
… has been well established through testing with force platforms. The force platform measures ground reaction forces in three orthogonal directions: mediolateral (Fx), craniocaudal (Fy) and vertical (Fz). Testing with force platforms has shown researchers that this technology is capable of …
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Generalizability of Center of Pressure Measurements Across Age Populations
… control of posture during quiet standing using force platform data lack standardization in measurement protocols (especially trial length and number). Guidelines for methodology that met acceptable reliability levels were established in both normal and altered visual conditions (Studies 1 and 2) …
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Broadening the Capability of Kinetics Analysis in Biomechanics
… designs in shoes might have on ground reaction force measures of performance. The second review and study evaluate methods of predicting ground reaction forces without the use of a force platform. A method of using effective forces and ways of improving its accuracy are evaluated in depth.</p>
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Validation of seated postural control measures in non-ambulatory persons with Multiple Sclerosis
… assessment involved participants sitting on a force platform without support for 30s. The center of pressure was determined based on the output of the force platform and the amount of seated postural sway was calculated. The FIST is a 14-Item clinical functional assessment of sitting balance …
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Development and Evaluation of Methods to Assess Physical Exposures in the Workplace
… monitoring of body kinematics and external forces on the body in the workplace. Thus, this research examined the potential of such technologies in exposure assessments, and evaluated them in comparison to mature laboratory systems (i.e., optical motion capture system and force platform) or …
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Quadriceps Avoidance Characteristics of Persons with a Reconstructed Anterior Cruciate Ligament during a Forward Lunge
… 10 repetitions of the forward lunge onto a force platform with each leg alternating leading legs with their arms across their chest. Using marker and force platform data, the moments about the knee in three dimensions were computed. There were no differences between control and ACLR …
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Postural control: Visual and cognitive manipulations
… (none, visual, auditory)) on a Kistler force platform. Significant differences were observed between the No Cognitive condition and one or both of the other cognitive conditions. No differences were present between the Visual and Auditory Cognitive tasks. Significant differences were …
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A comparison of ground reaction forces during running and form skipping
… study was to investigate the ground reaction forces (GRF) during form skipping and running. Healthy subjects (N = 9) ran and skipped across the force platform at a speed of 3.83 m·s--1 (+/-5%) and 1.75 m·s--1 (+/-5%) respectively. Three GRF variables were analyzed: average vertical GRF, …
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Effects of a 30-minute walk on ground reaction forces during walking with an external load
… subjects performed five walking trials across a force platform for five conditions. Walking speed was 1.57m/s for all conditions. The first two conditions had subjects walk without (C1) and with (C2) backpack load. Subjects then walked on a treadmill at 1.57m/s for 30 minutes. At 10 minute …
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Effect of an exercise based intervention on Virtual Time to Contact and Seated Instability Index as a function of seated postural control
… seated postural control was assessed using force platform metrics. Virtual Time to Contact (VTC) and Seated Instability Index (SII) were calculated. There were no differences in mean VTC or SII between groups. Additional testing revealed significant percent change from zero was found in VTC …
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THE EFFECT OF MAGNESIUM CARBONATE (CHALK) ON GEOMETRIC ENTROPY, FORCE AND EMG DURING ROCK CLIMBING
… structure. COF and the ratio of the vertical forces on the hand and feet (FR) were determined by a force platform mounted behind the climbing structure. Electromyography (EMG<sub>avg</sub>) was recorded throughout the trial. Although there was no difference in the COF, FR, or …
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The Effect of Heel Lifts on Ground Reaction Force Patterns and Lower Extremity Joint Angles in Subjects With Structural Leg Length Discrepancies
… the effect of heel lifts on ground reaction force patterns and lower extremity joint angles during the stance phase of walking in subjets with structural leg length discrepancies. Eighteen subjects aged 20 to 63 years with LLDs ranging from 3/16 inch to 7/8 inch participated in this study. A …
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The effects of structural and overlay design parameters of membrane switches on the force exerted by users
… conducted to evaluate the effects on applied force of structural design parameters and feedback conditions inherent in the aesthetic overlay of membrane switch touchpads. In the first experiment, which evaluated structure, 12 males and 12 females keyed 100 4-digit sequences into a computer …
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Dry land strength and power training to enhance swimming in-water turn performance
… overall training regime to increase lower body force output and impulse, in order to improve both swim start and turning performance. Elite swimmers demonstrate faster swimming turn times that are potentially a result of having better strength-power characteristics than sub-elite swimmers. The …
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The application of clinical gait analysis to running injuries
… Medical Technology industry® strain gauge force platform is appropriate for collecting data to study running style. These data include the movement patterns and estimated mechanical power and work required to effect the observed movement of the ankle and knee. The forces applied by the …
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Recovery of Balance and Lower Extremity Joint Contributions in Total Ankle Arthroplasty Patients
… two-year recovery period. Subjects stood on two force platforms for ten seconds in different conditions, and relevant variables were calculated from the force platform and 3D motion capture data. Results showed that increasing recovery time restored partial symmetry between the surgical and …
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The use of Tone Relieving Ankle-Foot Orthoses in the management of children with cerebral palsy
… muscular activity during gait. Videoanalysis and force platform data was also used to determine general gait parameters andrecord ground reaction vectors.Results for EMG and the temporal and spatial parameters were unable to highlight anyareas in which tone-relieving ankle-foot orthoses produced …
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Evaluation of Circumferential Ankle Pressure as an Ergonomic Intervention to Maintain Balance Perturbed by Localized Muscular Fatigue of the Ankle Joint
… sway during quiet standing was assessed using a force platform both pre- and post-fatigue as well as in the absence and presence of CAP. Application of CAP resulted in larger postural sway in individuals with low PA, and reduced postural sway in individuals with high PA. Fatigue effects on …
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The Analgesic Effects of Epidural Ketamine in Dogs With a Chemically Induced Synovitis: A Comparison Between Pre - or Post - Injury Administration
… was performed. Analgesia was measured with a force platform and a numerical rating scale (NRS). Assessments were performed before and at 12, 14, 16, 18, 20 and 24 hours after the induction of synovitis. Vertical ground reaction forces were significantly decreased and numerical rating scale …
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Force Platforms for Isometric Hamstring Testing: Reliability, Validity and Practical Applications in Professional Soccer
… an isometric test using a portable force platform (FP) has been proposed as an alternative to IKD, demonstrating high reliability in both dominant (CV = 4.3%) and non-dominant (CV = 5.4%) limbs and the ability to detect changes in strength in pre- vs. post exercise tests (McCall et …
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