Introduction: Grip and pinch movements are important to perform daily activities and to manipulate objects. In this paper we describe the development and evaluation of a peripheral device to quantify cylindrical grip, pulp-to-pulp pinch, pulp-to-side pinch strength and range of motion of children. Methods: Three objects were selected: a door handle, a switch, and a key, which were instrumented with force sensing resistors to analyse the strength. Potentiometers were used to verify the range of motion and micro switches to assure the correct position of the fingers during the movement execution. Thirty volunteers (8.77 ± 1.28), both male and female, were selected to test the peripheral device functionality. Results: The results determined the minimum necessary strength values for the object activation and maximum displacement, in which the values are 2.5N, 40°; 2.7N, 55°; and 2.8N, 100%, for door handle object, key object, and switch object, respectively. In the functionally tests, volunteers have shown a superior strength for activating each object and 73.33% of them have completed the range movement in the key object, 86.67% in the switch object, and 93.33% in the door handle object. Conclusion: The developed peripheral device enabled the measurement of range and static and dynamic strength of grip and pinch movements of children.
Introduction The wobble board (WB) is an unstable platform that allows proprioceptive balance training. However, because it is a passive device, it does not provide quantitative data about the training, making it difficult for the therapist to track their patients' performance. The aim of this study was to develop and validate a supervisory system and the data acquisition based on hardware (WB) and software (control app) elements that allow the dynamic balance evaluation. Methods An electronic system was placed on a WB. Its tilt was measured using an accelerometer. A supervisory system, capable of calculating the mass distribution (MD) and the center of pressure (CoP), was developed. Firstly, in order to validate the system, a functional test was performed; then, thirty volunteers were submitted to the test protocol approved by the research ethic committee of the University of Mogi das Cruzes. Results The results of the functional tests showed that the supervisory system was able to correctly calculate the MD and the CoP. In the test with volunteers, no significant difference was observed between the tests with and without visual feedback of the balance oscillation. Conclusion The developed system is portable and capable of storing data for future analysis. The combination of the tilt's, MD's, and CoP's values generated a detailed analysis of the exercises performed, allowing the therapist to track the performance of the patients and adapt the exercise to their needs, making the treatment using the WB more effective.
Os objetivos deste estudo foram desenvolver e validar um dispositivo computadorizado para mensurar a flexibilidade articular; mensurar a flexibilidade em crianças no ensino fundamental de 8 a 10 anos por meio do banco de Wells; comparar os dados alcançados pelo banco de Wells e o dispositivo computadorizado desenvolvido no presente estudo e avaliar a usabilidade do dispositivo. Participaram desta pesquisa 215 voluntários, com idade de 8 a 10 anos, sendo 63,72% (137) do sexo feminino e 36,28% (78) do sexo masculino, devidamente matriculados em uma instituição de ensino na região do Alto Tietê. Para coleta de dados, os voluntários realizaram o teste de flexibilidade utilizando o banco de Wells e o dispositivo computadorizado desenvolvido nessa pesquisa para avaliar a flexibilidade.O dispositivo foi confeccionado numa impressora de tecnologia de impressão 3D. Foi realizada uma avaliação da usabilidade com 15 professores de Educação Física para o produto desenvolvido através da interação de usabilidade baseada no formulário System Sustainability Scale (SUS) que contém 10 questões de múltipla-escolha. Os dados obtidos por medidas objetivas determinadas foram avaliadas quanto à frequência, média e desvio padrão. Foram seguidas como médias aritméticas das três medidas realizadas em cada etapa. Para investigar realizou-se os testes de Mann-Whitney e de Kruskal-Wallis e a tradução de Spearman. Para todas as análises foram consideradas diferenças significativas p<0,05.Conclui-se que o dispositivo computadorizado para medir a flexibilidade articular é capaz de avaliar em graus a amplitude de movimento,
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