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This paper describes a design method based on muscle synergies to minimize the number of sensors on surface electromyography (sEMG) shorts for monitoring motor and fun activities with playground equipment. We started from data collected during an experimental campaign with four playground equipment in Kinder Joy of Moving parks. In details, five sEMG located on the leg and one IMU located on the back were employed. From this data, muscle synergies extraction using non-negative matrix factorization algorithm was carried out. Then, the minimum number of sEMG sensors that allows the reconstruction of all sEMG patterns with a VAF for each muscle and each playground over 0.90 was defined. The results underlined how with two sEMG sensors placed on the vastus lateralis and semitendinosus, is possible to reconstruct five sEMG patterns for all four-playground equipment guaranteeing an accuracy in terms of VAF cumulative over 0.97. This work might pave the way to simplify the design of sEMG shorts for motor and fun activities reducing invasiveness, costs and environmental impact.

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Muscle Synergy-Based Design Method of Electromyographic Shorts for Monitoring Motor and Fun Activities with Playground Equipment

  • 会议论文

  • 发表日期：

    2025年

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  • Teodorico Caporaso,
  • Alessia Megna,
  • Stanislao Grazioso,
  • Gianpiero Vietto,
  • Antonio Lanzotti

摘要

This paper describes a design method based on muscle synergies to minimize the number of sensors on surface electromyography (sEMG) shorts for monitoring motor and fun activities with playground equipment. We started from data collected during an experimental campaign with four playground equipment in Kinder Joy of Moving parks. In details, five sEMG located on the leg and one IMU located on the back were employed. From this data, muscle synergies extraction using non-negative matrix factorization algorithm was carried out. Then, the minimum number of sEMG sensors that allows the reconstruction of all sEMG patterns with a VAF for each muscle and each playground over 0.90 was defined. The results underlined how with two sEMG sensors placed on the vastus lateralis and semitendinosus, is possible to reconstruct five sEMG patterns for all four-playground equipment guaranteeing an accuracy in terms of VAF cumulative over 0.97. This work might pave the way to simplify the design of sEMG shorts for motor and fun activities reducing invasiveness, costs and environmental impact.