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Completed

NCT Number: NCT03115645

Evaluation of the Dynamic Work Intervention for Office Workers to Reduce Sedentary Behaviour

Long-term sitting has been associated with multiple health risks. To reduce sitting time for office workers in a Dutch insurance company, an intervention will be implemented. The goal of this study is to evaluate this intervention on the short term (3 months) and long-term (12 months).

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Key information

Conditions

Lifestyle-related Condition Mental Disorders

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Achmea, Apeldoorn, Netherlands

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About this study

Large volumes of sitting time have been associated with multiple health risks such as diabetes, heart disease and premature death. Especially, in office workers sitting time per day can accumulate to over 10 hours a day. To reduce sitting time for office workers in a Dutch insurance company, an intervention will be implemented. The intervention contains the introduction of alternative workstations, intervention sessions with an occupational physiotherapist and an activity tracker with a self-help program booklet. The goal of this study is to evaluate the (cost) effectiveness of this intervention on the short term (3 months) and long-term (12 months). The primary outcome is objectively assessed sitting time.

In a cluster randomized controlled trial 250 employees of an insurance company will participate in the study. After baseline measurements, matched departments will be randomly assigned to the control or intervention group. The evaluation includes an economic and process evaluation.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Employed by the insurance company for at least the duration of the study (12 months)
  • Employed at least 28 hours per week
  • Employed at one of the participating departments

Exclusion criteria

  • Already access to the Dynamic Working Intervention
  • Unable to stand or walk for longer time periods (i.e. wheelchair bound)
  • Pregnancy

Treatment and study plan

Dynamic Work

Other

The intervention consists of the introduction of sit-stand workstations and desk bikes in the participants work environment in a ratio of 1:2 with traditional desks and chairs. Employees will receive a half hour intervention session at the start of the intervention from an occupational physiotherapist, who will provide further intervention support in the ensuing 12 weeks. Intervention participants will also receive an activity tracker which provides feedback on sitting time and physical activity levels.

Other names: Dynamisch Werken

Primary outcomes

  1. Sitting time

    Time frame: Change in sitting time between baseline and 12 month follow up assessment

    Total sitting time will be measured objectively with the activPAL activity tracker

Secondary outcomes

  1. Occupational sitting time

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, occupational time will be recorded and linked with a diary

  2. Non-occupational sitting time

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, non-occupational time will be recorded and linked with a diary

  3. Total standing time

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker

  4. Occupational standing time

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, occupational time will be recorded and linked with a diary

  5. Non-occupational standing time

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, non-occupational time will be recorded and linked with a diary

  6. Total stepping time

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker

  7. Occupational stepping time

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, occupational time will be recorded and linked with a diary

  8. Non-occupational stepping time

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, non-occupational time will be recorded and linked with a diary

  9. Sitting time in bouts of 30 min

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker

  10. Occupational sitting time in bouts of 30 min

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, occupational time will be recorded and linked with a diary

  11. Non-occupational sitting time in bouts of 30 min

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, non-occupational time will be recorded and linked with a diary

  12. Sitting time in bouts of 60 min

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker

  13. Occupational sitting time in bouts of 60 min

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, occupational time will be recorded and linked with a diary

  14. Non-occupational sitting time in bouts of 60 min

    Time frame: Assessed at baseline 3 months and 12 months

    Objectively assessed by the activPAL activity tracker, non-occupational time will be recorded and linked with a diary

  15. Waist circumference and body height

    Time frame: Assessed at baseline 3 months and 12 months

    Waist circumference and body height will be objectively measured in cm

  16. Body weight

    Time frame: Assessed at baseline 3 months and 12 months

    Body weight will be objectively measured in kg and used to calculate body mass index (BMI)

  17. Individual Work Performance

    Time frame: Assessed at baseline 3 months and 12 months

    Will be assessed with the Individual Work Performance Questionnaire (IWPQ)

  18. Need for recovery

    Time frame: Assessed at baseline 3 months and 12 months

    This will be assessed with the Need For Recovery (NFR) questionnaire

  19. Effort-reward imbalance

    Time frame: Assessed at baseline 3 months and 12 months

    This will be assessed with the short Effort-Reward Imbalance (ERI-short) questionnaire

  20. Musculoskeletal complaints

    Time frame: Assessed at baseline 3 months and 12 months

    This will be assessed with the Nordic Musculoskeletal questionnaire

  21. Vitality

    Time frame: Assessed at baseline 3 months and 12 months

    This will be assessed with the Vita-16© TNO questionnaire

  22. Quality of life measured with EQ-5D-5L

    Time frame: Assessed at baseline 3 months and 12 months

    This will be assessed with the EQ-5D-5L questionnaire

  23. Absenteeism

    Time frame: Assessed at baseline 3 months and 12 months

    This will be self-reported as well as assessed with company records

  24. Healthcare consumption

    Time frame: Assessed at 3 months and 12 months

    This includes general practitioner, allied health professionals, complementary medicine consumption

  25. Sitting, physical activity and work related outcomes

    Time frame: Assessed at baseline 3 months and 12 months

    These will be assessed with custom sitting, physical activity and work questions

  26. Process evaluation

    Time frame: Assessed at 3 months and 12 months

    A process evaluation will be performed using qualitative (focus group interviews) and quantitative methods (questionnaires) in order to determine the level of implementation of the intervention as well as barriers and facilitators of this implementation.

Sponsors and collaborators

Lead sponsor

Amsterdam UMC, location VUmc

Other

Collaborators

  • Achmea

Registry information

Important dates

Study start
2017
Primary completion
2018
Study completion
2018
First posted
Apr 14, 2017
Registry last updated
Oct 3, 2019

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.

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