Evaluating the Acute Glycemic Response to Different Strategies of Breaking Up Sedentary Time

Completed · Not applicable

Conditions studied: Pre Diabetes, Postprandial Hyperglycemia

In brief

This study aims to determine the most effective strategy of reducing sedentary behavior to improve health. Specifically, we aim to answer the following questions: (a) To determine if there is a significant difference in acute post-prandial glucose response between continuous sitting and two intermittent standing regimes (high frequency, low duration breaks (HFLD) and low frequency, high duration breaks (LFHD)). We hypothesize that intermittent standing (combined HFLD breaks and LFHD breaks regimes) will result in lower overall acute post-prandial glucose compared to continuous sitting. (b) To determine if there is a significant difference in acute post-prandial glucose response between two strategies to reduce sitting with standing (HFLD standing breaks vs. LFHD standing breaks). We hypothesize that the HFLD breaks condition will elicit lower acute post-prandial glucose level compared to the LFHD breaks condition. All eligible participants will be consented and subjected to all three study conditions: (i) Uninterrupted sitting, (ii) HFLD breaks, and (iii) LFHD breaks. The order at which participants were subjected to these conditions will be randomly determined and each condition were performed a week apart. Standardized meals (breakfast and lunch) will be provided during each lab visit and participants will be then be asked to perform their usual work activity using a sit-stand workstation in the lab. Depending on their assigned condition, the participants will be prompted to stand or sit for a given period of time. A continuous glucose monitor will be used to measure glucose response to the intervention while an activPAL device will be used to make sure that participants are compliant with the study protocol.

Key facts

Study ID

NCT04144920

Run by

Arizona State University

People needed

12

Starts

2018-08-01

Expected to finish

2019-06-14

Last updated by the study team

2019-10-30

Who can join

Age: 35 and older, up to 65. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• (i) ages 35-65 years, (ii) sedentary work habits, (iii) presence of impaired fasting glucose (fasting glucose level of 100-125 mg/dL), (iv) willing to engage in three 7.5 hour lab visit, (v) willing to wear the activPAL and continuous glucose monitor, (vii) current sit-stand workstation owner, and (viii) BMI 25-45 kg/m2

You may not qualify if…

• (i) chronic mobility limitations, such as moderate-to-severe arthritis, (ii) psychiatric disorders, (iii) cardiometabolic abnormality, (iv) food allergy/restriction, (v) BMI>45 kg/m2

Where it is running

• Arizona State University — Tempe, Arizona, United States

Full record on ClinicalTrials.gov

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