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

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-07-08

Study Completion Date

2018-05-31

Brief Summary

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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.

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Detailed Description

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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

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Glycemic Response Cognitive Function

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Exercise and Chocolate Milk

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.

Children will then drink 240mL of chocolate milk

Group Type EXPERIMENTAL

Exercise and Chocolate Milk

Intervention Type OTHER

High intensity interval exercise Chocolate Milk

Exercise and Water

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.

Children will then drink 240mL of water

Group Type EXPERIMENTAL

Exercise and Water

Intervention Type OTHER

High intensity interval exercise Water

Sitting and Chocolate Milk

Children will quietly sit for 20 minutes Children will then drink 240mL of chocolate milk

Group Type EXPERIMENTAL

Sitting and Chocolate Milk

Intervention Type OTHER

Sitting Chocolate Milk

Sitting and Water

Children will quietly sit for 20 minutes Children will then drink 240mL of water

Group Type EXPERIMENTAL

Sitting and Water

Intervention Type OTHER

Sitting Water

Interventions

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Exercise and Chocolate Milk

High intensity interval exercise Chocolate Milk

Intervention Type OTHER

Exercise and Water

High intensity interval exercise Water

Intervention Type OTHER

Sitting and Chocolate Milk

Sitting Chocolate Milk

Intervention Type OTHER

Sitting and Water

Sitting Water

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* be between 9 and 13 years of age
* be healthy, and have been born at term
* not be taking any medications
* not have allergies to dairy or gluten.

Exclusion Criteria

* Food sensitivities, allergies, or dietary restrictions
* Health, learning, emotional, or behavioural problems
* Receiving any medications
* Non-habitual breakfast eater (\<5 days/week)

Minimum Eligible Age

9 Years

Maximum Eligible Age

13 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes