NCT03305107

High-intensity Interval Exercise and Chocolate Milk on Blood Glucose and Cognition

The Effects of High-intensity Interval Exercise and Chocolate Milk on Glycemic Control and Cognitive Function in Children.

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 20 (actual)
• Sponsor: Toronto Metropolitan University · Academic / Other
• Sex: All
• Age: 9 Years – 13 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to determine the separate and combined effects of high-intensity interval exercise and chocolate milk on glycemic response, cognitive function, subjective appetite, and salivary cortisol among children aged 9-13 year old children.

Detailed description

Twenty children 9-13 years of age will be recruited for this study. On four separate mornings, after a 10 hour overnight fast, each child will consume a standardized breakfast (including orange juice, a strawberry breakfast bar and a pear fruit cup) at home. Using a 2x2 factorial design, 2 hours after breakfast consumption, each participant will arrive in the lab (T=-20 min) and participate in high-intensity interval exercise or sit quietly for 20 min, followed by a treatment drink of chocolate milk or water (control) consumption in 10 min. During high-intensity interval exercise treatment, children will exercise on a cycle ergometer with a 3-min warm-up, 7 repeated bouts of 60-sec exercise at 90% of peak power output and 60-second recovery, and a 3-min cool down. Blood glucose will be measured via finger-prick at baseline (-20 min), 10, 30, 60, and 90 min. Cognitive functions will be measured using a battery of cognitive tests which assess verbal declarative memory, working memory, and executive functioning, and will be measured at baseline, 10. 30. 60, and 90 min. Subjective appetite and emotions will be measured using a 100-mm visual analogue scale (VAS) at baseline, 10, 30, 60, and 90 min. Salivary cortisol will be assessed from saliva samples collected using the passive drool method, and will be collected at baseline, 10 and 30 min.

Conditions

• Glycemic Response
• Cognitive Function

Interventions

Type	Name	Description
OTHER	Exercise and Chocolate Milk	High intensity interval exercise Chocolate Milk
OTHER	Exercise and Water	High intensity interval exercise Water
OTHER	Sitting and Chocolate Milk	Sitting Chocolate Milk
OTHER	Sitting and Water	Sitting Water

Timeline

• Start date: 2017-07-08
• Primary completion: 2017-12-31
• Completion: 2018-05-31
• First posted: 2017-10-09
• Last updated: 2018-08-10

Locations

1 site across 1 country: Canada