The Effects of Breakfast on Mental Workload

Not Applicable

Completed

• Conditions: Healthy Subjects
• Interventions: Dietary Supplement: Breakfast juice

• Registration Number: NCT01555385
• Lead Sponsor: University of Helsinki

Brief Summary

The aim of the study is to investigate the influence of nutritive (high-protein or high-carbohydrate) and non-nutritive (low energy) breakfast on psychological and physiological responses of mental workload during multitasking in healthy volunteers.

Detailed Description

Not available

Study Timeline

• Study Start: 2011-09
• Study First Submitted: 2012-03-14
• Study First Submitted QC: 2012-03-14
• Study First Posted: 2012-03-15
• Primary Completion: 2012-04
• Status Verified: 2013-03
• Study Completion: 2013-03
• Last Update Submitted: 2013-03-05
• Last Update Posted: 2013-03-06

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 13

Inclusion Criteria

• eats usually breakfast
• use computer mouse with right hand
• normal sleep-wake rhythm between 9 pm and 8 am
• in females hormonal contraception

Exclusion Criteria

• gastrointestinal disease, diabetes or any other significant major medical morbidity
• milk allergy
• lactose intolerance
• smoking
• excess use of alcohol, coffee, tea, cola drinks (> 10 doses/day)
• pregnancy and breast feeding
• no medication or dietary supplements influencing measured responses
• BMI > 30 kg/m2 or < 18 kg/m2

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Dietary supplement: high-protein breakfast	Breakfast juice	high-protein juice
Dietary supplement: high-carbohydrate breakfast	Breakfast juice	high-carbohydrate juice
Dietary supplement: low energy breakfast	Breakfast juice	low-calorie juice

Primary Outcome Measures

Name	Time	Method
Brain measures of mental workload (ERP 300 amplitude and latency) and heart rate	1 day

Secondary Outcome Measures

Name	Time	Method
Subjective mental workload and mood measurement assessed using visual analogue scale in response to test meal.	1 day
cognitive function measurements	1 day
Blood concentration of glucose	1 day
salivary cortisol	1 day
Blood concentration of tryptophan in relation to other large neutral amino acids	1 day

Trial Locations

Locations (1)

University of Helsinki, Institute of Biomedicine; 🇫🇮 Helsinki, Finland