The Effect of Tea Breaks on Cerebrovascular Perfusion During Desk Work

NCT ID: NCT03953391

Last Updated: 2019-08-07

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 20 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2019-04-30
• Study Completion Date: 2019-07-15

Brief Summary

Sedentary behaviour of healthy subjects may have a detrimental impact on cerebral blood flow as well as cognitive measures related to mood and alertness. In this study we focus on the impact of leaving the desk to consume a cup of tea at regular intervals during a sedentary working day.

Detailed Description

Prolonged desk work has detrimental impact on cerebral blood flow as well as cognitive measures related to mood and alertness caused. These effects might be prevented by taking short breaks with physical activity. Usually, desk workers have short breaks during office times for either a visit to the restroom or to enjoy for a moment a (hot) drink. Consumption of tea has been associated with benefits related to attention, alertness, mood and creativity. This study focuses on the impact of physically leaving the desk to prepare and consume a cup of tea at regular intervals during a sedentary working day.

Conditions

Cerebrovascular Circulation; Affect

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: OTHER
• Blinding Strategy: SINGLE

Study Groups

Tea-water

Tea before water

Group Type: EXPERIMENTAL

Tea

Intervention Type: OTHER

Subjects walk to a nearby area and prepare a cup of 150 ml tea once every hour. The tea is consumed whilst being seated at their desks.

Water

Intervention Type: OTHER

150 ml water is served to subjects once every hour. The water is consumed whilst being seated at their desks.

Water-tea

Water before tea

Group Type: EXPERIMENTAL

Tea

Intervention Type: OTHER

Subjects walk to a nearby area and prepare a cup of 150 ml tea once every hour. The tea is consumed whilst being seated at their desks.

Water

Intervention Type: OTHER

150 ml water is served to subjects once every hour. The water is consumed whilst being seated at their desks.

Interventions

Tea

Subjects walk to a nearby area and prepare a cup of 150 ml tea once every hour. The tea is consumed whilst being seated at their desks.

Intervention Type: OTHER

Water

150 ml water is served to subjects once every hour. The water is consumed whilst being seated at their desks.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Healthy males and females, age at screening > 18 and < 60 years;
• BMI > 18 and < 30 kg/m2
• Apparently healthy
• Agreeing to be informed about medically relevant personal test-results by a physician
• Informed consent signed
• Sedentary working individuals (≥6 hours desk work per day, ≥4 days per week)

Exclusion Criteria

• Reported physical exercise ≥4 hours per week
• Taking medication (including food supplements and traditional medicines) which may interfere with study measurements, as judged by the PI
• Reported participation in another nutritional or biomedical trial (involving an intervention of at least 1 week) 3 months before the screening or during the study
• Reported participation in night shift work 2 weeks prior to screening or during the study. Night work is defined as working between midnight and 6.00 a.m.
• Reported consumption of > 14 units (female subjects) and > 21 units (male subjects) alcoholic drinks in a typical week.
• Reported use of any nicotine containing products in the 6 months preceding the study and during the study itself.
• If female, is pregnant (or has been pregnant during the last < 3 months ago) or will be planning pregnancy during the study period.
• If female, is lactating or has been lactating in the 6 weeks before screening and/or during the study period.
• Reported weight loss/gain (> 10%) in the last 6 months before the study.
• Being an employee of Unilever or an employee or a student working in RISES LJMU that is directly involved in this study.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Liverpool John Moores University

OTHER

Sponsor Role: collaborator

Unilever R&D

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Dick Thijssen, prof

Role: PRINCIPAL_INVESTIGATOR

Liverpool John Moores University

Locations

John Moores University

Liverpool, , United Kingdom

Countries

United Kingdom

Other Identifiers

REF-BEV-3235

Identifier Type: -

Identifier Source: org_study_id