NCT07197879

Effect of Dynamic Sitting on Pain Development - Part 2

Effect of Dynamic Sitting on Pain Development - Part 2 - a Randomized Controlled Cross-over Study

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 20 (estimated)
• Sponsor: University of Applied Sciences for Health Professions Upper Austria · Academic / Other
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Accepted

Summary

As a follow-up project to the Dyn-Sit-Pain study, this research aims to investigate the overall health as well as the physical and mental well-being through dynamic office chairs. The development of an innovative dynamic office chair concept will be professionally and scientifically supported, and the developed prototypes will be examined within the framework of usability studies.

Detailed description

This clinical trial is a prospective, randomised, controlled, open-label study with two tracks, each in a cross-over design investigating the effect of of two dynamic office chairs (saddle chair with standard pendulum mechanism \[Smart Moving Technology\], study track 2 = office swivel chair with integrated newly developed pendulum mechanism \[Smart Moving Technology New\]) on the musculoskeletal system of office workers classified as pain developers. The study consists of a pre-screening visit and 4 assessment days / visits. After proving eligibility for the study (inclusion/exclusion criteria), subjects are assigned to one of the two study tracks. Subjects are randomised to one of the two study tracks and then to the respective group (Group A to D). * Study track 1: saddle chair with standard pendulum mechanism (= intervention 1) + static office chair (= control) * Study track 2: office swivel chair with integrated newly developed pendulum mechanism (= intervention 2) + static office chair (= control). Depending on the study track and group allocation, the test subjects first receive a dynamic office chair (= intervention) or a static office chair (= control). The randomization will be realized with opaque envelopes in different colours and follows international recommendations. Overall participants will execute identical assessments. A wash-put period between the control and the intervention phases ensures identical baseline conditions. The overall duration of study participation equals 16 weeks.

Conditions

• Lower Back Pain

Interventions

Type	Name	Description
DEVICE	Dynamic office chair (saddle chair with standard pendulum mechanism)	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.
DEVICE	Dynamic Office Chair (office swivel chair with integrated newly developed pendulum mechanism)	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.

Timeline

• Start date: 2025-05-12
• Primary completion: 2026-12-31
• Completion: 2027-03-31
• First posted: 2025-09-29
• Last updated: 2025-09-29

Locations

1 site across 1 country: Austria