Could a Feedback Device Help Manage Work-related Shoulder Disorders?

Condition(s) studied

Investigational drug(s) / intervention(s)

Shoulder watch load (SWL) feedback: During week 2 and 3 after randomization, the experimental group will undergo the intervention using the SWL, designed to monitor workers' physical work demands. During this time, the SWL will provide real-time feedback based on parameters set via Ergowatchapp. A workplace visit by a physiotherapist will be conducted to establish and adjust the feedback thresholds in week 2, after the education intervention. If necessary, a second remote meeting will take place in week 3 to explain how participants can modify the thresholds themselves. The initial feedback thresholds will be set based on the physical work demands measured during week 1 and will be adjusted after one week of feedback use. These thresholds will be collaboratively determined by a physiotherapist and the workers. Only the experimental group will receive feedback from the SWL during the study period.

Education: Participants will receive an education intervention delivered by a physiotherapist. This intervention will take place preferentially at the participants' workplace at the end of the 2nd week post-randomization. The session will last 30 to 45 minutes, and involve personalized, patient-centered education on their condition. The physiotherapist will use open-ended questions to encourage participants to express their goals and address specific concerns related to their shoulder condition. Given the expected diversity in physical constraints (manual vs. non-manual workers) and individual challenges, the session will be tailored to each worker needs. At the end of the session, workers will receive a booklet summarizing key points, including: understanding shoulder anatomy, function and pain, managing shoulder pain, enhancing movement variability, adjusting work environment, and considering factors such as sleep, stress, coping mechanisms, and psychological factors on pain.

Study summary

Work-related shoulder pain is a common problem with significant socio-economic repercussions. The impact of these disorders on workers is considerable, particularly in terms of pain, disability and reduced quality of life. Several occupational factors may explain the onset of these disorders, such as changes in the work environment, physical demands, psychosocial factors specific to the occupational context and the age of workers. The lack of quantitative measurement tools to assess the physical demands of work over an extended period of time is sorely felt. Recently, our team developed a wearable feedback device, similar to a watch worn on the arm, which measures shoulder movements and muscle activity, transforming this real-time data into clinical indicators. These indicators provide immediate feedback to workers, enabling them to better understand the physical demands of their tasks and adapt accordingly. If this device proves effective in reducing physical demands, it could become a valuable tool for guiding workplace assessments and interventions. However, this device has not yet been tested on workers with shoulder pain. For this reason, a two-part pilot study is needed to understand user needs, assess ease of use and the feasibility of implementing the device. The first component will consist of a pilot clinical trial involving 42 workers suffering from shoulder pain, divided into two groups: one group will use the feedback device for 2 weeks, while the other group will continue to work without intervention. The second phase will analyze the experience of participants who have used the device.

Eligibility

Primary outcome measure(s)

• Feasibility : quantitative component procedure — Baseline
  Assessing trial recruitment success (Recruitment rate) : Track the rate of screened participants who consent to participate in the trial, using a screening and recruitment log.
• Feasibility : quantitative component procedure — From enrollment to the end of recruitment
  Assessing trial recruitment success (Determining recruitment duration) : Evaluate the time required to recruit the target number of participants.
• Feasibility : quantitative component procedure — From enrollment to the end the trial at 12 weeks
  Assessing trial recruitment success (Retention rate) : Monitor the number of participants who complete the trial, and document reasons for attrition.
• Feasibility : quantitative component procedure — From enrollment to the end of the last completion questionnaire at 12 weeks
  Completion rate : Report the completion rate for each questionnaire at each time point.
• Feasibility : quantitative component procedure — From 2 weeks to 4 weeks of the intervention period
  Evaluating adherence to the intervention : Self-reported SWL devise usage: Participants in the experimental group will complete a self-reported questionnaire at the end of each week during the 2-week intervention period to assess their adherence to using the SWL.
• Feasibility : qualitative component procedure — From 4 weeks to 12 weeks
  Focus groups : All participants from the experimental group will be invited to participate to a focus group, to explore various aspects of feasibility such as the acceptability of the technology, the experience of wearing the SWL and receiving the feedback, and suggestion for potential improvement of the SWL.

Trial sites (1)

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