Effect of Dynamic Sitting on Pain Development

NCT05664776 | Completed

• 1 other identifier: DynSit-Pain
• Study Type: interventional
• Target: 13
• Locations: 1 country
• Sites: 1

Brief Summary

Worksite based prolonged static sitting postures can cause musculoskeletal pain. While the development of pain increases due to the constant growth of digitalization at work, numerous interventions to reduce prolonged sitting periods have been created. The effects of such interventions have not yet been properly examined. Thus, the "DynSit-Pain" project was initiated to investigate the influence of dynamic sitting on the pain development of pain developers in office environments.

Conditions

Lower Back Pain

Keywords

Sedentary Behavior; Occupational Diseases; Pain Developer; Lower Back Pain; Office Environments

Outcome Measures

Primary Outcomes (1)

• Mean change in subjectively perceived lower back pain as determined with a Visual Analogue Scale (VAS)

  Participants will rate their subjectively perceived lower back pain before and after a conventional occupational day on 5 consecutive days starting at baseline (week 1) and ending with the post-intervention visit (week 6). Subjectively perceived lower back pain will be assessed with a Visual Analogue Scale (VAS). The VAS used for this study ranges from 0 (none) to 100 points (strongest pain imaginable). Question: Please rate the level of your lower back pain at this moment.

  6 weeks

Secondary Outcomes (8)

• Change in impact of pain on daily life (pre- vs. post-intervention) estimated with the German version of the Oswestry Disability Index (ODI-D)

  6 weeks

• Mean change in subjectively perceived mental fatigue (pre- vs. post-work, weekly average) estimated via Visual Analogue Scale (VAS)

  6 weeks

• Mean subjectively rated working performance (post-work, weekly average) estimated via VAS

  6 weeks

• Change in quality of life (pre- vs. post-intervention) estimated via 5-level EuroQol quality of life questionnaire (EQ-5D-5L)

  6 weeks

• User's experience estimated with the User Experience Questionnaire-Short version (UEQ-S)

  6 weeks

Study Arms (2)

Arm A (control first)

EXPERIMENTAL

The pre-existing static office chair will be used in the personal workplace for the first 6 weeks within the first half of the study. A wash-out period of a minimum of 4 weeks will be executed after the first half of the study. A dynamic office chair will be used on the personal workstation for 6 weeks within the second half of the study after the wash-out period.

Device: Dynamic office chair

Arm B (intervention first)

EXPERIMENTAL

A dynamic office chair will be used in the personal workplace for the first 6 weeks within the first half of the study. A wash-out period of a minimum of 4 weeks will be executed after the first half of the study. The pre-existing static office chair will be used on the personal workstation for 6 weeks within the second half of the study after the wash-out period.

Device: Dynamic office chair

Interventions

Dynamic office chair DEVICE

The dynamic office chair has a typical office chair design (e.g. seat pan and a lumbar support). The seat pan is mounted on a flexible mechanic construction that allows hip movements in the frontal plane while sitting.

Arm A (control first); Arm B (intervention first)

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Signed informed consent
• People aged between 18 and 65 years
• People classified as pain developers (e.g., increase of pain of 10 mm on a 100 mm paper based visual analogue scale) determined by pre-screening
• Office workers
• Employment status: \> 30 h / week
• Sufficient German language skills (minimum B2 level)
• Table height of at least 63 cm at the main workplace

You may not qualify if:

• Physical or mental limitations that aggravate dynamic sitting or using the interventional chair (e.g., wheel chair users, vestibular dysfunctions)
• Pregnancy
• Working in sitting posture for less than 20 hours per working week in the main workplace.
• Bodyweight over 110 kg and a body height over 195 cm
• Regular therapy or medication for pain

Sponsors & Collaborators

• University of Applied Sciences for Health Professions Upper Austria: lead
• Bergardi GmbH: collaborator

Study Sites (1)

University of Applied Sciences for Health Professions Upper Austria

Linz, Upper Austria, 4020, Austria

Location

MeSH Terms

Conditions

Low Back Pain; Sedentary Behavior; Occupational Diseases

Condition Hierarchy (Ancestors)

Back Pain; Pain; Neurologic Manifestations; Signs and Symptoms; Pathological Conditions, Signs and Symptoms; Behavior

Study Officials

• Bernhard Schwartz, Dr. BSc MSc

  FH Gesundheitsberufe OÖ

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: December 5, 2022
• First Posted: December 27, 2022
• Study Start: December 5, 2022
• Primary Completion: October 20, 2023
• Study Completion: October 20, 2023
• Last Updated: December 5, 2023

Record last verified: 2023-12

Data Sharing

• IPD Sharing: Will not share

Locations

AU (1)