CClinicalTrials.gg
Status unknownNCT05822401Updated Apr 20, 2023

Prevention, Management and Rehabilitation of Knee Osteoarthritis at the Workplace

An interventional study of Blood flow restriction (BFR) and Usual care (control) in Knee Pain Chronic, Knee Osteoarthritis and Knee Discomfort, sponsored by National Research Centre for the Working Environment, Denmark. Status unknown. Open to participants aged 18 Years to 67 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-04-20.

Sponsored by National Research Centre for the Working Environment, Denmark · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Apr 2023), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
18 Years to 67 Years
Sex
All
01

Study summary

The goal of this intervention study is to assess the effect of blood flow restricted (BFR) exercise integrated into the daily work tasks among hospital workers with or at increased risk of chronic knee pain.

The main questions are:

Can BFR exercise integrated into the daily work tasks reduce knee pain (primary outcome) and improve function and work ability among hospital workers with or at increased risk of chronic knee pain? Participants in the intervention group will for shorts bouts during their workdays integrate BFR into their daily work tasks involving walking, whereas the control group will continue as usual.

02

Conditions studied

  • Knee Pain Chronic
  • Knee Osteoarthritis
  • Knee Discomfort
03

In context

Osteoarthritis

4,397 studies on the registry are indexed under Osteoarthritis; 581 are open to participants now.

This study's planned enrollment of 80 is above the median of 70 across 3,440 interventional studies indexed under Osteoarthritis.

Browse Osteoarthritis studies →

Lead sponsor

National Research Centre for the Working Environment, Denmark is the lead sponsor of 22 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 67 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Hospital workers working at least 20 hours per week with or without chronic knee pain (>3 months)

Exclusion criteria

Exclusion Criteria:

  • Life-threatening disease
  • Conditions where BFR training may be contraindicated, e.g. pregnancy, cancer, diabetes, major cardiovascular disease, current, previous or family history of clotting disorders, recent immobilization, major surgery or injections into the joint (i.e. corticosteroid injection)
  • Systolic/diastolic blood pressure above 160/100 mmHg
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
80 participants (estimated)

Study arms

  • Experimental
    Blood flow restriction (BFR)

    Blood flow restricted training (BFR) integrated into the daily work tasks for 8 weeks.

    Behavioral: Blood flow restriction (BFR) · Behavioral: Usual care (control)

  • Active comparator
    Usual care (control)

    Will continue their work as usual

    Behavioral: Usual care (control)

Interventions

  • BehavioralBlood flow restriction (BFR)

    Blood flow restricted training integrated into the daily work tasks for 8 weeks.

  • BehavioralUsual care (control)

    Will continue their work as usual

06

What researchers measure

Primary outcomes

  1. Pain intensity

    Change in worst knee pain intensity during the last week rated on a 11-point numeric rating scale (NRS)

    Time frame: Change pre-post 8 weeks of intervention

Secondary outcomes

  1. Functional performance

    30-s chair-stand test, 40 m fast-paced walk test, a stair-climb test, maximal isometric knee extensor muscle strength

    Time frame: Change pre-post 8 weeks of intervention

  2. Work ability

    Single-item on physical work ability derived from the Work Ability Index (WAI)

    Time frame: Change pre-post 8 weeks of intervention

Other outcomes

  1. Work-limiting pain

    Rating of the degree of work limitations due to pain

    Time frame: Change pre-post 8 weeks of intervention

  2. Work-related fatigue

    Rating af work-related fatigue in different body parts

    Time frame: Change pre-post 8 weeks of intervention

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 20, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05822401
Lead sponsor
National Research Centre for the Working Environment, Denmark
Collaborators
University of Southern Denmark, University Hospital Bispebjerg and Frederiksberg
Responsible party
Lars L. Andersen (Professor, National Research Centre for the Working Environment, Denmark) — Principal investigator
First posted
Apr 20, 2023
Start date
Apr 11, 2023 (estimated)
Primary completion
Dec 31, 2023 (estimated)
Completion
Dec 31, 2023 (estimated)
Last update
Apr 20, 2023

Study contacts

Sebastian Skovlund
Contact
svs@nfa.dk
40385166

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Apr 2023. You cannot join it, but the record below documents what was studied.

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