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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Assessment of a Wearable Motion Analysis System : Predicting ground reaction forces and joint angles with IMU:s and pressure insole sensors / Testning av ett bärbart system för rörelseanalys : Estimering av markreaktionskraft och ledvinklar med IMU:er och sulor med trycksensorer

Mårten, Norman January 2023 (has links)
The analysis of human movement is important for diagnosis of as wellas planning and evaluating treatments of disorders or injuries affectingmovement. Optical motion capture combined with force plates provideaccurate measurements, but are confined to laboratory settings limiting theirpotential usefulness in clinical applications. Efforts are made to movemeasurements out of the laboratory making them more accessible, cheaperand easier to use for healthcare providers. This work aimed to assess thefeasibility of doing motion analysis with a wearable system consisting ofIMUs and pressure insole sensors, while also developing a methodology thatcould be used for subsequent validation. Six subjects performed walking, sideskipping, squats, chair stands and a balance exercise, while data was collectedsimultaneously from the wearable system and optical motion capture withforce plates. For demonstration, data from one example subject was analysedand included in this work. The wearable system showed promising results formeasuring ground reaction force. Center of pressure errors were relativelyhigh, likely influenced by the choice of method for coordinate transformationbetween the systems. Joint angle errors varied from low to very high fordifferent trials. Ankle dorsiflexion angle showed low errors and pelvis tiltangle high errors for all motion types. There is a need to investigate thecause for these high errors before more measurements are conducted. Themethodology presented in this work can, with a few recommended changes,be used for future validation of the wearable motion analysis system.
2

Vliv senzomotorickych vložek na posturální stabilitu dětí s dětskou mozkovou obrnou. / Effect of sensomotoric insoles on postural stability in children with cerebral palsy

Bartošová, Simona January 2022 (has links)
Author: Bc. Simona Bartošová Title: Effect of sensomotoric insoles on postural stability in children with cerebral palsy Objectives: Objectively assess the effect of sensomotoric insoles on children with cerebral palsy (CP) via COP (Centre of Pressure) parameters recorded on Kistler force plate. Methods: This thesis is designed as an experimental study. Selected paramaters of static postural balance were recorded via force plate to assess the effect of sensomotoric insoles. Five subjects (average age 7.2 years) with diagnosis of cerebral palsy were enrolled into the study. Data collection was carried out in two separated sessions - first before therapy and second after using the insoles for one month. The validity of the data was supported by three repetitions for each modification - upright plain stand with open eyes, upright stand with feet together and upright plain stand with closed eyes. Monitored parameters were: total trajectory of COP, amplitude of mediolateral displacement of COP, amplitude of anteroposterior displacement of COP and mean velocity of movement of COP. The data were analyzed in MATLAB® version R2019b. The statistical analysis was performed including the outliers elimination. The normality of data was checked by Lilliefors' test. In the case of normality a two-sample Student's...

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