Motion analysis system

Motion analysis only measures run-tumble bias Motion analysis systems are relatively expensive Time consuming to collect data for statistical tests... 

Computerized cell-tracking system (Motion Analysis Systems, Inc., Santa Rosa, CA). 

The environment in which the sport is taking place can also pose some constraints for example, the development of sensors for wet sports, impact sports or sports taking place in extreme temperature requires additional consideration for the system s robustness and stability. Further, local temperature, humidity and pH levels also change during physical exercise and can affect some sensors. For example, Cochrane et al. (2007) demonstrated how the electrical performance of their sensor material, a thermoplastic elastomer composite, was affected by high humidity. After 50% relative humidity, resistance increases rapidly with humidity. They attributed it to the carbon black nanoparticles of the composite, which are sensitive to water. At high humidity, temperature also had a small effect on resistance. Munro et al. (2008) also found that while their strain sensors were able to provide valid and reliable data compared to a video-based motion analysis system, the consistency of the feedback was affected by enviromnental conditions. 

Methods and Procedures. Three healthy normal subjects have been measured to date. Subjects were volunteers selected from a pool of students and university staff having no history of spinal pathology. All subjects were briefed about the experiment in advance. Prior to the arrival of the subjects, the Selspot motion analysis system, the A/D converter, and amplifiers were calibrated. Upon arrival, the subjects were asked to dress only in shorts and take off their shoes. The Selspot system measures the location of LEDs in 3D space with an accuracy of about 1 mm (Fig. 5). 

Mayagoitia, R.E., Nene, A.V., and Veltink, P.H., Accelerometer and rate gyroscope measurement of kinematics An inexpensive alternative to optical motion analysis systems. /. Biomech., 35, pp. 537-542, 2002. 

Development of Inexpensive Motion Analysis System-Preliminary Findings... 

The developed system was an accurate, cost-effective and user friendly motion analysis system for basic human motion analysis. In addition, the proposed system could be used as start-up gait laboratory where fundamental kinematics and kinetics parameters of human gait are essential. Furthermore, the scope of application of such instrumentation is wide from clinical application of studying pathological gait, rehabilitation, sport science, and eventually to telemedicine and development of humanoid robot. 

Hongche Guo et. al. 2007. A wearable human motion analysis system fa- lower limb rehabilitation robot. lEEE/ICME International Conference [Pg.142]

The patellar tendon reflex tests were carried out in the Motion Analysis Laboratory under the Department of Biomedical Engineering, University of Malaya, Kuala Lumpur, Malaysia. All tests were recorded and processed using the motion analysis system named Vicon Nexus 1.4. 

Some strain gauges were attached on the lateral bar of the orthosis in order to measure the absolute values of the loads applied on the orthosis. The gait parameters and the loads applied on the hip joint and crutches were measure by motion analysis system. 

Studies recently assessed the concurrent validity of the GAITRite system in humans with video-based analysis system [9] paper-and-pencil and video-based methods [10] a footswitch system [1 Ij a three-dimensional motion analysis system Vicon-512 [12] and stopwatch-footfall count method [14], all of these reports demonstrated that the results of validity and reliability of this system for gait analysis were excellent. The same procedures had been done in dogs [20]. 

Strimpakos N., Sakellari V., Gioftsos G., Papathanasiou M., Brountzos E., Kelekis D., Kapreli E., Oldham J. (2005) Cervical spine ROM measurements optimizing the testing protocol by using a 3D ultra-sound-based motion analysis system. Cephalalgia. 25(12) 1133-45. 

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