Tag: sensors

Sensor-based footwork instrument for the martial art of Tarung Derajat: Validity and reliability

Alnedral, Yoshua Simamora, Nurul Ihsan, Muhamad Sazeli Rifki, Nissa Aldani, Deby Tri Mario

Alnedral, Yoshua Simamora, Nurul Ihsan, Muhamad Sazeli Rifki, Nissa Aldani, Deby Tri Mario – Sensor-based footwork instrument for the martial art of Tarung Derajat: Validity and reliability –  Fizjoterapia Polska 2025; 25(2); 363-369

DOI: https://doi.org/10.56984/8ZG00E1LXFF

Abstract
Although instruments to measure footwork ability in sports performance have been investigated in previous studies, an instrument relevant to the movement characteristics of Tarung Derajat martial arts has not been found. The purpose of this study was to develop a sensor-based footwork instrument for Tarung Derajat martial arts. This study began with determining the elements of the instrument, design, selection of physical elements to be measured, sensor device components, assembly of the device, characterization of the relevance of movement in Tarung Derajat martial arts, and testing. The feasibility test of the device involved 4 experts (instrumentation, sports measurement tests, Tarung Derajat martial arts, and information technology) and 6 Tarung Derajat martial arts athletes (aged 18.53 ± 0.52 years). Then the test-retest reliability involved 33 Tarung Derajat martial arts athletes, consisting of male (n = 19; aged 19.21 ± 0.71 years) and female (n = 14; aged 18.79 ± 0.80 years). Data were analyzed using percentages, correlations, and t-tests. The results of the study showed that the sensor-based footwork instrument was very feasible to be used for Tarung Derajat martial arts, with a percentage of 86.50. The results of the test-retest reliability showed a high correlation coefficient (n = 33; r = 0.897; Sig. < 0.05; n = 19; r = 0.802; Sig. < 0.05; n = 14; r = 0.823;            Sig. < 0.05). Then, the t-test showed that there was no significant difference in the results of the footwork ability test between male and female participants (Sig. > 0.05). Field trials with wider subjects are needed in future research, with more refined tool displays and designs.
Key words
footwork, sensors, martial arts, Tarung Derajat, sports performance
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Sensor-based isometric contraction examination tool after ankle sprain injury and ankle instability

Intan Harared, Anton Komaini, Bafirman, Donal Syafrianto, Deby Tri Mario, Novadri Ayubi, Andre Igoresky, Aydin Karacam, Bekir Erhan Orhan, Zsolt Németh

 

Intan Harared et al. – Sensor-based isometric contraction examination tool after ankle sprain injury and ankle instability –  Fizjoterapia Polska 2024; 24(3); 133-138

DOI: https://doi.org/10.56984/8ZG020AQNW

Abstract:
Background. Previous studies have examined the application and benefits of sensors, both in sports and health. Unfortunately, the design of sensor-based isometric contraction examination tools after ankle sprain injuries and ankle instability is still rarely carried out.
Purpose. The aim of this research is to design a sensor-based isometric contraction examination tool after ankle sprain injury and ankle instability.
Material and Methods. The design used is research and development involving experts, namely instrumentation physics, sports physiology, and physiotherapy to assess the suitability of the tool before field trials. The tool developed is the “Isometric Contractions Test”, which is designed in the form of a box with dimensions of 10 cm (height) x 10 cm (width) x 25 cm (length). Various electronic components are also used, such as Arduino Pro Mini, Flexi Sensors, switch buttons, and OLED LCD as digital reading output. A total of 10 participants aged 18-23 years participated voluntarily for the field trial. Participants were men and women who had experienced sub-acute or chronic ankle sprains and ankle instability. The data obtained were analyzed using the correlation method.
Result. The results of this study report that this sensor-based isometric contraction examination tool is valid, reliable, effective, and practical in detecting and treating post-injury healing of ankle sprains and ankle instability.
Conclusions. This tool can be used to assist physiotherapists in carrying out observations and evaluations to treat healing quickly and precisely, both in athletes and non-athletes.

Keywords:
isometric contractions, sensors, ankle sprains, ankle instability

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Design of sensor-based bilateral leg muscle circumference balance testing tool for athletes

Afrida Yesi, Anton Komaini, Bafirman, Donal Syafrianto, Sri Gusti Handayani, Khairuddin, Mohammed Aljunaid, Procopio B. Dafun Jr., Deby Tri Mario, Novadri Ayubi

Afrida Yesi, Anton Komaini, Bafirman, Donal Syafrianto, Sri Gusti Handayani, Khairuddin, Mohammed Aljunaid, Procopio B. Dafun Jr., Deby Tri Mario, Novadri Ayubi – Design of sensor-based bilateral leg muscle circumference balance testing tool for athletes – Fizjoterapia Polska 2024; 24(2); 271-274

DOI: https://doi.org/10.56984/8ZG5608VP3

Abstract
This research aims to design a sensor-based tool for checking bilateral leg muscle circumference balance in athletes. This study employs a Research and Development (R&D) design. This research involved 3 experts who were competent in their fields, namely an instrumentation physicist, a physiotherapist and a sports physiologist, whose aim was at the validation test stage, to find out the weaknesses and strengths of the product that had been designed. After carrying out the validation test stage, the resulting product will be tested for use in the field. A total of 10 men who were selected using the Purposive Sampling technique with ages ranging from 20 to 28 years. The data obtained was tested using the r-correlation method. The main results of our research report that this sensor-based bilateral leg muscle circumference balance examination tool is valid, practical, effective, and reliable as a measuring tool for leg muscle circumference balance examination. This tool proves highly beneficial for healthcare professionals, particularly sports physiotherapists, by aiding in muscle balance assessments.
Keywords
measurement balance, leg muscles, sensors
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