MOReS Freestyle Libre Validation Study
Study Details
Study Description
Brief Summary
To measure the effects of interrupting prolonged sitting with brief standing physical activity interventions on physical and cognitive performance, health and wellbeing in young people.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
N/A |
Detailed Description
Cross over randomised exposure response experimental study in 10 healthy children and adolescents, to measure the effects of interrupting prolonged sitting with brief standing physical activity interventions on their physical and cognitive performance, mobility, health and wellbeing. The study will assess the extent of the immediate and short-term effects of interrupting sitting with brief moderate-vigorous physical activity (MVPA) breaks compared to a sitting only condition.
Dietary analysis and metabolic and cognitive tests after acute exercise will be performed on the participants to compare the FreeStyle Libre responses between those with and without disabilities.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: 20 minutes MVPA 20 minutes of moderate to vigorous exercise at 50-80% maximum heart rate to be performed on a cycle ergometer 40 minutes from the start of the testing session following consumption of a glucose solution at 0 mins. Glucose readings from the FreeStyle Libre to be taken at 0 mins, 30 mins, 60 mins, 90 mins and 120 mins. Cognitive tests to be carried out before the glucose solution is administered at 0 mins and at the 120 min point. |
Other: Exposure
Participants randomised to one of the three exposures
|
| Experimental: 4 x 5 mins MVPA 4 bouts of 5 minutes of moderate to vigorous exercise at 50-80% maximum heart rate to be performed on a cycle ergometer 30 minutes from the start of the testing session and repeated at 60 mins, 90 mins and 120 mins following consumption of a glucose solution at 0 mins. Glucose readings from the FreeStyle Libre to be taken at 0 mins, 30 mins, 60 mins, 90 mins and 120 mins. Cognitive tests to be carried out before the glucose solution is administered at 0 mins and at the 120 min point. |
Other: Exposure
Participants randomised to one of the three exposures
|
| Experimental: Uninterrupted sitting - No exercise, sitting session (control). A sitting only exposure, glucose solution to be consumed at 0 mins.Glucose readings from the FreeStyle Libre to be taken at 0 mins, 30 mins, 60 mins, 90 mins and 120 mins. Cognitive tests to be carried out before the glucose solution is administered at 0 mins and at the 120 min point |
Other: Exposure
Participants randomised to one of the three exposures
|
Outcome Measures
Primary Outcome Measures
- Executive Functioning - Eriksen Flanker Task [Maximum of two weeks]
The main outcome will be change in executive functioning from the start to the end of the session using the Eriksen Flanker Task. The test measures selective attention and executive control and measures speed (milliseconds) and accuracy (number of responses correct). This will be performed before the oral glucose tolerance test and again at the end of each session.
- Working Memory - WISC Digit Span [Maximum of two weeks]
Wechsler Intelligence Scale for Children (WISC) Digit Span will test attention and working memory. The total score is calculated by the number of correct responses. This will be performed before the oral glucose tolerance test and again at the end of each session.
Secondary Outcome Measures
- Oral Glucose Tolerance Test (OGTT) [Maximum of two weeks]
On arrival an OGTT, simulating insulin and glucose response comparable to that following a meal will be given. Children will follow an identical protocol for OGTT during all conditions. Children will be asked to fast the night before, for 10 hours prior to the test. They will arrive fasted, have a baseline glucose reading taken and will be given the OGTT, followed by sit only or sit in addition to physical activity breaks regimens. For the OGTT the stimulus is 1.75g/kg body weight of glucose solution. A Freestyle Libre glucose monitoring system will be placed on the participants' arm and glucose readings will be monitored at timed intervals.
Eligibility Criteria
Criteria
Inclusion Criteria:
-
Young people aged 9-18 years old
-
No significant current or previous medical history
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Are able to participate safely in the study's assessments and brief interrupted sitting moderate to vigorous physical activity (MVPA)
Exclusion Criteria:
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Those with uncontrolled epilepsy/seizures (stable epilepsy/on medication > 12 weeks)
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Those who have Type 1 and Type 2 diabetes or other glucose intolerance or on medication for such conditions
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Those who experience contraindications to physical training
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Those who are on any form of steroids, anti-anxiety/depression drugs, birth control, beta-blockers, statin, adrenaline, HIV or Hepatitis C medications (these medications can affect the readings during the oral glucose tolerance test)
-
Those with known allergies to plasters
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Oxford Brookes University | Oxford | Oxfordshire | United Kingdom | OX3 0BP |
Sponsors and Collaborators
- Oxford Brookes University
Investigators
- Principal Investigator: Helen Dawes, PhD, Oxford Brookes University
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- LGHC072021