Redistributing Intermittent Physical Activity Breaks to Target Postprandial Glucose Excursion.
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Franklin Pierce University
- Enrollment
- 11
- Locations
- 1
- Primary Endpoint
- Postprandial glucose levels
Study Overview
Brief Summary
The literature has shown that interrupting sitting time with frequent physical activities (e.g., cycling on a stationary bike for 3 minutes every 30 minutes of sitting) is effective for decreasing blood sugar levels. However, the optimal frequency and distribution of sitting interruption remains less clear. The purpose of this study is to compare the effects of two different protocols of sitting interruption (i.e., 3 minutes of cycling every 30 minutes versus 3 minutes of cycling every 15 minutes) on blood sugar levels.
Detailed Description
This study will involve two different physical activity conditions and a control condition. Each participant will undergo the three conditions in a random order. The first protocol involves 3 minutes of cycling on a stationary bike at moderate intensity every 30 minutes for 6 hours, totaling 36 minutes of cycling exercise. The second protocol involves 3 minutes of cycling on a stationary bike at moderate intensity every 15 minutes for 3 hours to match the total exercise duration in the first protocol. Participants will remain seated for 3 hours to match to the total time spent in the lab. For the control condition, participants will remain seated. For each condition, participants will be provided with two meals, one before the protocol and another one in the middle of the protocol. The meals will be purchased from the cafeteria on campus based on the participant's own choice as long as carbohydrates account for 55-65% of total calories. Participants will eat identical meals across the three conditions.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Crossover
- Primary Purpose
- Treatment
- Masking
- Triple (Participant, Investigator, Outcomes Assessor)
Eligibility Criteria
- Ages
- 18 Years to 45 Years (Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Apparently healthy persons
- •Sedentary lifestyle
Exclusion Criteria
- •Cardiovascular diseases
- •Pulmonary diseases
- •Metabolic diseases
- •Other contraindications to exercise
Arms & Interventions
3-min Exercise Per 30 Min
This protocol involves 3 minutes of cycling on a stationary bike at moderate intensity every 30 minutes for 6 hours, totaling 36 minutes of cycling exercise.
Intervention: 3-min Exercise Per 30 Min (Behavioral)
3-min Exercise Per 15 Min
This protocol involves 3 minutes of cycling on a stationary bike at moderate intensity every 15 minutes for 3 hours to match the total exercise duration in the first protocol.
Intervention: 3-min Exercise Per 15 Min (Behavioral)
Sitting
Sitting control.
Outcomes
Primary Outcomes
Postprandial glucose levels
Time Frame: three and a half hour after the carbohydrates intake
The investigators will measure capillary blood sugar levels every 30 minutes using the finger-stick method.
Secondary Outcomes
No secondary outcomes reported
Investigators
Tongyu Ma
Assistant Professor of Health Sciences
Franklin Pierce University