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The Acute Impact of Sit-stand Desks on Post-meal Blood Sugar Levels

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT02913079
Recruitment Status : Completed
First Posted : September 23, 2016
Last Update Posted : October 17, 2018
Sponsor:
Information provided by (Responsible Party):
Travis Saunders, University of Prince Edward Island

Tracking Information
First Submitted Date  ICMJE September 15, 2016
First Posted Date  ICMJE September 23, 2016
Last Update Posted Date October 17, 2018
Study Start Date  ICMJE September 2016
Actual Primary Completion Date June 2018   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: September 20, 2016)
Postprandial Glucose [ Time Frame: 12 hours ]
Postprandial glucose will be assessed over 1 workday in both the experimental and control conditions.
Original Primary Outcome Measures  ICMJE Same as current
Change History
Current Secondary Outcome Measures  ICMJE
 (submitted: September 20, 2016)
  • Objectively measured minutes of light, moderate and vigorous physical activity. [ Time Frame: 24 hours ]
    Physical activity time will be assessed over 1 workday during both conditions.
  • Objectively measured minutes of sitting [ Time Frame: 24 hours ]
    Sitting time will be assessed over 1 workday during both conditions.
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE The Acute Impact of Sit-stand Desks on Post-meal Blood Sugar Levels
Official Title  ICMJE The Acute Impact of Sit-stand Desks on Post-meal Blood Sugar Levels
Brief Summary Context and Rationale: Uninterrupted sitting is associated with increased risk of diabetes, heart disease, and death, even among people who are physically active. These relationships are likely due to increases in post-meal blood sugar observed when people sit for long periods (e.g. > 1 hour) without interruption. In contrast to sitting, standing results in large reductions in post-meal blood sugar levels. Our group has recently shown that sit-stand desks result in large (e.g. 2.5 hour/day) reductions in occupational sitting time. Taken together, these findings suggest that sit-stand desks may help to reduce post-meal blood sugar levels. However, this has yet to be examined in the field. Theoretical Approach and Objectives: The objective of this randomized crossover study is to determine whether people have lower blood sugar when using a sit-stand desk, in comparison to a desk that can only be used while sitting. Methods and Procedures: Sixteen participants will be asked to wear a continuous glucose monitor to measure their blood sugar levels during 2 separate conditions. During one condition, they will be asked to use a sit-stand desk to sit and/or stand as much as they like during 1 workday. During the other condition, they will be asked to work at a seated desk for 1 workday. Participants will be provided with identical meals to eat during each of the two conditions. We hypothesize that participants will have lower blood sugar levels on the day when they use the sit-stand desk, in comparison to the day using a traditional seated desk. Significance and Future Use: If our results support this hypothesis, this would suggest that sit-stand desks may be a useful way to reduce blood sugar levels in people at risk for diabetes. This could also lead to larger population-based interventions studying the health impact of sit-stand desks.
Detailed Description Not Provided
Study Type  ICMJE Interventional
Study Phase  ICMJE Not Applicable
Study Design  ICMJE Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Condition  ICMJE
  • Insulin Sensitivity
  • Glucose Tolerance
  • Sedentary Behaviour
  • Physical Activity
Intervention  ICMJE
  • Behavioral: Sit-stand desk
  • Behavioral: Sitting desk
Study Arms  ICMJE
  • Experimental: Sit-stand desk
    During this condition, participants will sit or stand as much as they like throughout a workday.
    Intervention: Behavioral: Sit-stand desk
  • Placebo Comparator: Sitting
    During this condition, participants will work in the sitting position only.
    Intervention: Behavioral: Sitting desk
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Completed
Actual Enrollment  ICMJE
 (submitted: October 12, 2018)
14
Original Estimated Enrollment  ICMJE
 (submitted: September 20, 2016)
25
Actual Study Completion Date  ICMJE September 2018
Actual Primary Completion Date June 2018   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  • To participate in this study, participants must be between the ages of 20 and 65, and have access to a sit-stand desk (depending on your workspace, we may be able to provide you with a sit-stand desk during the study if you do not already have one).

Exclusion Criteria:

  • Participants will be excluded if they are currently taking any diabetes medications targeting blood sugar or insulin sensitivity as this will impact our primary outcome of postprandial glucose. Participants will also be excluded if they are unable to stand or walk independently, as these are secondary outcomes in the present study.
Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 20 Years to 65 Years   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE Yes
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE Canada
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT02913079
Other Study ID Numbers  ICMJE 6006774
Has Data Monitoring Committee No
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE
Plan to Share IPD: No
Plan Description: No.
Responsible Party Travis Saunders, University of Prince Edward Island
Study Sponsor  ICMJE University of Prince Edward Island
Collaborators  ICMJE Not Provided
Investigators  ICMJE Not Provided
PRS Account University of Prince Edward Island
Verification Date October 2018

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP