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Related Experiment Video

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An Application for Pairing with Wearable Devices to Monitor Personal Health Status
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Ergo4Workers: A User-Centred App for Tracking Posture and Workload in Healthcare Professionals.

Inês Sabino1, Maria do Carmo Fernandes1, Ana Antunes2

  • 1Research and Development Unit for Mechanical and Industrial Engineering (UNIDEMI), Department of Mechanical and Industrial Engineering, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.

Sensors (Basel, Switzerland)
|September 27, 2025
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Summary

Occupational therapists can use the Ergo4workers (E4W) app to monitor ergonomic risks and prevent work-related musculoskeletal disorders (WRMSD). This user-centered mobile tool integrates wearable sensor data for posture and workload analysis.

Keywords:
smartphone applicationusabilitywearable sensorswork-related musculoskeletal disorders

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Area of Science:

  • Occupational Health
  • Human-Computer Interaction
  • Biomedical Engineering

Background:

  • Healthcare professionals, particularly occupational therapists, are susceptible to ergonomic risk factors leading to work-related musculoskeletal disorders (WRMSD).
  • Ergonomic assessments are vital for mitigating these occupational hazards.
  • Wearable devices offer a promising avenue for continuous biomechanical and physiological data collection for ergonomic assessments.

Purpose of the Study:

  • To describe the development of the Ergo4workers (E4W) mobile application.
  • To integrate data from various wearable sensors for assessing occupational therapists' posture and workload.
  • To identify poor work practices and enhance awareness of ergonomic risk factors.

Main Methods:

  • A User-Centred Design (UCD) approach was employed, involving six occupational therapists in the initial use-context specification.
  • The Ergo4workers (E4W) application was developed using WordPress.
  • Three UCD iterations included usability testing in laboratory and real-world healthcare settings, employing Cognitive Walkthrough and System Usability Scale evaluations.

Main Results:

  • The development process followed a structured User-Centred Design (UCD) methodology.
  • Usability testing across three iterations yielded positive user feedback.
  • The final prototype was evaluated as an easy-to-use and intuitive smartphone application.

Conclusions:

  • The Ergo4workers (E4W) application, developed via UCD, effectively integrates wearable sensor data.
  • The app provides valuable insights into occupational therapists' posture and workload.
  • E4W is a user-friendly tool that supports ergonomic risk management without disrupting daily work.