Evaluation of a Workplace Intervention for Musculoskeletal Disorders Among Blue-collar Workers

The goal of this feasibility study is to learn if a work environment program to address musculoskeletal disorders and pain, can be implemented and accepted by employees with physical demanding work tasks. The main question it aims to answer is:

* Will the intervention be accepted by the workers? * It it feasible to implement a workplace intervention to prevent musculoskeletal disorders and pain?

Participants will:

* Implement the intervention * Participate in the intervention twice a week for eight weeks * Answer questionnaires and participate in interviews to evaluate the intervention

Completed

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Key information

Conditions

Pain Musculoskeletal Diseases Musculoskeletal Disorders Neurologic Manifestations Pathological Conditions, Signs and Symptoms Signs and Symptoms

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

The National Research Centre for the Working Environment

Copenhagen, Denmark

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

An in-house occupational safety and health professional (OSH) employed at the workplace, or an out-house OSH employed at one of two OSH consultancies.
All the workers employed at the unit at the participating workplace.

Exclusion criteria

None

Treatment and study plan

GLAD intervention

Behavioral

The intervention consists of two components:

Implementation of the GLAD intervention to the workers at one unit at the participating workplaces. The GLAD intervention consists of 15 modules containing knowledge on pain, participatory ergonomics and physical exercises. Each module last 30 minutes and are delivered by an occupational safety and health professional (OSH).
Education of the OSH's to deliver the GLAD intervention. The education aim to give the OSH the necessary knowledge, skills and competencies to deliver the intervention to the workers at their workplaces. The education program consists of evidence-based knowledge on pain and management, content of the GLAD intervention and implementation strategies. The education is delivered as an online preparatory work (approximately 1 hour) and a 7-hour course with physical attendance.

Primary outcomes

Acceptability

Time frame: From enrollment to the end of the 10 week-intervention period

The theoretical framework of acceptability questionnaire will be used to evaluate acceptability as well as interviews guided by the acceptability framework.

Sponsors and collaborators

Lead sponsor

National Research Centre for the Working Environment, Denmark

Other Gov

Registry information

Official study title

GLAD - Feasibility of a Preventative Workplace Intervention for Musculoskeletal Disorders and Pain Among Blue-collar Workers

Important dates

Study start: 2025
Primary completion: 2025
Study completion: 2025
First posted: Mar 12, 2026
Registry last updated: Mar 12, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed