Modifiable Work and Movement Solutions Low Back Pain in Seafood Workers
Condition: Chronic Low Back Pain
MeSH terms: Back Pain; Low Back Pain
Study type: Interventional

Summary: 
      Chronic low back pain has been identified as a major problem for seafood and agricultural
      workers, and is known to affect worker health and productivity. The aims of this study are
      to: 1) identify modifiable, sector-specific, work and movement solutions with the potential
      to reduce the burden or severity of chronic lower back pain in clam workers and 2) determine
      the extent that participants adopt identified solution(s), and the impact on functional
      difficulty and low back pain.
    

Detailed description: 
      This pilot/feasibility pre-post intervention study will use a participatory ergonomic
      approach without a control group or randomization. The participatory approach will foster
      capacity building by creating support within the workplace communities and by involving
      seafood workers in developing context specific solutions for their own work practice,
      increasing the potential for adoption and success.

      Phase 1: Specific Aim 1: Identify modifiable, sector-specific work and movement solutions
      with that can reduce the burden or severity of chronic lower back pain

        1. Development of rapid prototype video clips: clam workers will be videotaped performing
           typical work tasks during daily operations on the boat, as well as transporting, sorting
           and packing clams will be analyzed. Key movements and positions such as lifting,
           prolonged static flexed positions that may be contributing to repetitive stress in the
           low back region will be categorized. Short clips will be edited to create examples of
           movements and positions for each category potentially contributing to low back pain.

        2. Prioritization of specific tasks and relevant solutions by key leaders: Up to 10
           participants with a history of chronic low back pain for more than 3 months will be
           recruited by the Cedar Key Aquaculture Association for the initial pilot testing of
           research methods. Once participants have provided informed consent, they will complete a
           general demographic survey, functional disability and pain questionnaire and surveys to
           measure co-variates that include pain fear and anxiety, self-efficacy and coping
           questions.

      Focus groups will be held in the participant's work settings with consented individuals from
      the same work teams to ensure application within a specific context and promote discussion
      directed towards the best outcomes. Participants will discuss major tasks and factors
      contributing to their low back pain using the video clips to target discussions and their
      opinions of options that would help alleviate or prevent pain. Only clips from the relevant
      teams will be used for each focus group. The focus groups will be recorded and transcribed
      for analysis and as a record of discussion.

      Basic principles of ergonomic adaptation and movement modification for repetitive work
      activities on and off the boat and lifting will be introduced using demonstrations and
      discussion in a small group format. Participants will discuss other possible solutions.
      Self-management including movement strategies and pain relief techniques will be introduced
      and demonstrated by the principal investigator. The educational session will be videotaped to
      ensure all relevant discussions are considered during the development of interventions and to
      assist with reliability of intervention delivery.

      At the end of the focus group and educational session, participants will prioritize their
      most problematic work tasks and most relevant and feasible solutions. In a follow up visit,
      participants will be videotaped demonstrating the tasks and selected methods to reduce or
      prevent repetitive stress determined from the focus group. With permission from the
      participants, selected videos will be edited to provide clips to be used in subsequent
      workshops. Only participants who agree to be videotaped for educational purposes will be
      included in this session.

      Phase II: Specific Aim 2: Determine the extent that participants adopt identified
      solution(s), and the impact of their self-selected work and movement modifications on their
      functional difficulty in the workplace related to low back pain.

      In addition to the workers recruited for specific aim 1, up to 24 additional clam workers for
      a total of up to 34 participants will be recruited with the same criteria; chronic low back
      pain for more than 3 months, over the age of 18 and employed full time in clam
      gathering/preparation.

        1. Baseline: Once participants have provided informed consent, they will complete a general
           demographic survey, functional disability and pain questionnaire and surveys to measure
           co-variates that include pain fear and anxiety, self-efficacy and coping questions.
           Functional disability, pain reports and work related functional ability will be recorded
           once a week for 4 weeks.

        2. Implementation of interventions, focus group discussion and identification of individual
           solutions: After the baseline period, workers will contribute to small focus groups of
           4-6 individuals in their work team. After introduction of basic ergonomic and
           self-management principles, participants will review video clips of the prioritized and
           revised solutions identified in Specific Aim 1. After indicating their preferences, the
           feasibility of solutions will be discussed. Following this discussion, participants will
           indicate if they believe that the adjustments in work tasks, movement strategies or
           self-management apply to their work, are easy to implement and are likely to decrease
           their back pain. Workers will suggest any additional options to implement the ergonomic
           principles. At the end of the focus group, participants will select 3 options to use in
           their work activities for 8 weeks.

        3. Follow up: The research team will contact participants by text or phone once a week to
           provide reminders. At 4 weeks the initial survey data will be repeated. The frequency
           and consistency of use of the solutions during work activities will be reported to
           reflect adoption, along with any pre-post changes in measures. After completion of the 8
           weeks, individuals will also comment on the effectiveness, feasibility and impact of
           solutions on their low back pain and job performance. Participants will also be asked to
           suggest options for implementation and provide feedback on how to optimize the
           intervention for wider dissemination, and if they would recommend the solutions to
           co-workers.
    

Intervention name(s): Ergonomic and movement modifications
Intervention type(s): Behavioral
Intervention description(s): Introduction of basic ergonomic and self-management principles, participants will review video clips of the prioritized and revised solutions. Adjustments in work tasks, movement strategies or self-management techniques will be self selected by workers after an educational session using videotapes of work processes.
Intervention model: Single Group Assignment
Intervention model description: Within-subject control
Masking: None (Open Label)
Primary purpose: Treatment
Keywords: repetitive strain; ergonomics; participatory ergonomics; chronic low back pain; seafood workers