ClinicalTrials.gg
WithdrawnNCT03468894Updated Apr 18, 2019

Breaking up Sitting With a Treadmill Desk in Office Workers

An interventional study of Treadmill desk walking in Cardiovascular Risk Factor, Type2 Diabetes and Sedentary Lifestyle, sponsored by University of Bedfordshire. Withdrawn. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-04-18.

Sponsored by University of Bedfordshire · Not applicable, Interventional, and Prevention

Why this study was withdrawn
Insufficient resources to support study
Phase
Not applicable
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

Sitting for long uninterrupted periods of time can increase risk of heart disease, diabetes and early death, even if you take part in the United Kingdom government guidelines for physical activity of 21/2 hours per week of exercise. Effective interventions to reduce the risk of these diseases are therefore needed. The aim of this study is to examine the effects of regularly breaking up sitting time with light intensity treadmill desk walking among office workers on health markers, sitting time and physical activity. If using a treadmill desk leads to benefits in these disease risk markers then this could be an effective strategy to improve employee health in the workplace.

Participants will be randomly assigned to the intervention group or the control group. After baseline activity and health measures, they will take part in the study for 4 weeks.

Intervention group: Participants will have a treadmill desk placed in their office or a nearby location and will be asked to walk while working on the treadmill desk continuously for 20 minutes at a self-selected slow pace each hour for a minimum of 6 hours per shift. There will be one treadmill desk between 2-3 people.

Control group: Participants will be asked to work as usual at their regular workstation with no changes in their physical activity and dietary habits.

Sitting time and physical activity will be measured at baseline and during the last week f the intervention. A range of health and psychological measures will be taken at baseline and post-intervention.

02

Conditions studied

  • Cardiovascular Risk Factor
  • Type2 Diabetes
  • Sedentary Lifestyle

Keywords

  • prolonged sitting
  • sedentary behaviour
  • physical activity
  • office workplace
03

In context

Sedentary Behavior

1,273 studies on the registry are indexed under Sedentary Behavior; 300 are open to participants now.

Browse Sedentary Behavior studies →

Lead sponsor

University of Bedfordshire is the lead sponsor of 12 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 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • adults aged 18-65 years who work for shifts lasting ≥ 6 h and spend ≥ 75% of this time sitting at their desk
  • work a minimum of 3 days per week

Exclusion criteria

Exclusion Criteria:

  • the presence of any known blood borne disease
  • self-reported diagnosed diabetes
  • physical activity
  • pregnancy
  • any major injury or illness, tobacco use, or any other health issue that my limit the participant in carrying out the required activity bouts.
  • any planned absence from their office for more than one week during the 4 week study period.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
0 participants (actual)

Study arms

  • No intervention
    Control

    The control group will continue to work as usual at their regular workstations.

  • Experimental
    Intervention

    A shared treadmill workstation will be installed in participating offices, or in a nearby location in case there is no space to fit the workstation in the office, enrolled to this group. Within the intervention group there will be a maximum allocation of two participants per treadmill desk. The participants in the intervention group will be asked to interrupt their sitting with 20 minutes of self-selected light-intensity walking at a speed of 1-4 km/h each hour for a minimum of 6 hours per shift to accumulate a total of 2 hours of light-intensity activity per work day.

    Behavioral: Treadmill desk walking

Interventions

  • BehavioralTreadmill desk walking

    See intervention arm description

06

What researchers measure

Primary outcomes

  1. Change in Workplace sitting time

    This will be objectively measured using an activpal thigh worn activity monitor

    Time frame: Baseline and week 4 of intervention

Secondary outcomes

  1. Change in Workplace stepping

    This will be objectively measured using an activpal thigh worn activity monitor

    Time frame: Baseline and week 4 of intervention

  2. Change in Daily sitting time

    This will be objectively measured using an activpal thigh worn activity monitor

    Time frame: Baseline and week 4 of intervention

  3. Change in Daily physical activity

    This will be objectively measured using an activpal thigh worn activity monitor

    Time frame: Baseline and week 4 of intervention

  4. Change in Sleep quality and quantity

    Measured with the Pittsburgh Sleep Quality Index

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  5. Change in Mental-wellbeing

    Measured using the Warwick-Edinburgh Mental Well-being Scale. each of the following items is indicated on the following scale: none of the time=1; rarely=2; some of the time=3; often=4; all of the time=5 (5 indicating a better outcome).The total scores are summed. Items: * I've been feeling optimistic about the future * I've been feeling useful * I've been feeling relaxed * I've been feeling interested in other people * I've had energy to spare * I've been dealing with problems well * I've been thinking clearly * I've been feeling good about myself * I've been feeling close to other people * I've been feeling confident * I've been able to make up my own mind about things * I've been feeling loved * I've been interested in new things * I've been feeling cheerful

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  6. Change in body mass index (kg/m2)

    Calculated with measurement of height and weight

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  7. Change in waist circumference (cm)

    Measured with a tape measure at the level of the umbillicus

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  8. Change in blood pressure (mmHg)

    Measured using an automated blood pressure monitoring device

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  9. Change in blood glucose (mmol/L)

    Measured via finger prick method and analysed using the Cholestech analyser

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  10. Change in triglycerides (mmol/L)

    Measured via finger prick method and analysed using the Cholestech analyser

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  11. Change in high-density lipoprotein cholesterol (mmol/L)

    Measured via finger prick method and analysed using the Cholestech analyser

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  12. Change in positive and negative affect

    Measured using the positive and negative affect scale. Items will be measured on the following scale: very slightly or not at all=1; a little=2; moderately=3; quite a bit=4; extremely=5. The items are: * interested * distressed * excited * upset * strong * guilty * scared * hostile * enthusiastic * proud * irritable * alert * ashamed * inspired * nervous * determined * attentive * jittery * active * afraid The 10 items for POSITIVE (PA) affect are: attentive, interested, alert, excited, enthusiastic, inspired, proud, determined, strong and active. The 10 items for NEGATIVE (NA) affect are: distressed, upset, hostile, irritable, scared, afraid, ashamed, guilty and nervous, jittery. The scores generated will vary along the scale of 10 - 50, with lower scores indicating low (positive or negative) affect and higher scores indicating high (positive or negative) affect.

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  13. Change in self-efficacy

    Measured using the Self-Efficacy Scale questionnaire (Schwarzer and Renner, 2009)

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  14. Change in job performance

    Measured using a single-item 7-point likert scale

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  15. Change in work engagement

    Measured using the Utrecht Work Engagement Scale multi-item 7-point likert scale

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  16. Change in musculoskeletal symptoms

    Measured using the Sandardised Nordic Questionnaire

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  17. Change in presenteeism

    Measured using the 8-item Work Limitations Questionnaire

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  18. Change in quality of life

    Measured using the World Health Organization Quality of Life questionnaire

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  19. Change in perceived stress

    Measured using the Cohen Perceived Stress likert scale. 10 items are answered on the following scale that refer to the person's thoughts and feelings over the past month: never=1; almost never=2; sometimes=3; fairly often=4; very often=5 The items are in the past month how often have you: * been upset because of something that happened unexpectedly * felt unable to control the important things in your life * felt nervous or stressed * felt confident about your ability to handle personal problems * felt that things were going your way * found that you could not cope with all the things you had to do * been able to control irritations in your life * that you were on top of things * been angry because of things that happened that were outside of your control * felt that difficulties were piling up so high that you could not overcome them Positively worded items are reverse scored and the ratings are summed, with higher scores indicating more perceived stress.

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

  20. Change in perceived vigor

    Measured using a 12 item likert scale. The scale is: never of almost never=1; very infrequently=2; quite infrequently=3; sometimes=4; quite frequently=5; very frequently=6; always or almost always=7. The items are based on how often have you felt this way at work? There are three subscales of the Shirom-Melamed Vigor Measure. The three subscales are: Physical Strength; Emotional Energy; and Cognitive Liveliness. Higher scores indicate better outcomes.

    Time frame: Baseline and post-intervention (within 1 week after intervention ends)

07

Study locations

No study locations are listed for this record.

08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Mar 2018; primary completion for Oct 2018, 7 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 28, 2018
First posted
Mar 19, 2018
StartEst.
Mar 22, 2018
Primary completionEst.
Oct 30, 2018
CompletionEst.
Oct 30, 2018
Last update
Apr 18, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 18, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03468894
Lead sponsor
University of Bedfordshire
Responsible party
Daniel Bailey (Senior Lecturer in Health, Nutrition and Exercise, University of Bedfordshire) — Principal investigator
First posted
Mar 19, 2018
Start date
Mar 22, 2018 (estimated)
Primary completion
Oct 30, 2018 (estimated)
Completion
Oct 30, 2018 (estimated)
Last update
Apr 18, 2019

Oversight

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

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