alertheid, concentratie Attention concentration
Conditions
Interventions
None listed
Sponsors
Unilever
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: 1) Male and female participants in the age 18 - 50 at start of the study; 2) Weight range for males: 85 kg +/- 10 kg; Weight range for females: 65 kg +/- 10 kg; 3) BMI: 20.0 - 30.0 kg/m2; 4) Healthy 5) Alcohol consumption for females 50%; 9) Proficient in Dutch language (and able to understand written instructions); 10) Consumes caffeine (3 cups of either tea, cola or coffee per week minimum) maximum of 21 cups per week to avoid withdrawal effects.
Exclusion criteria
Exclusion criteria: 1) Being an employee of Unilever or the CRO; 2) Not usually having breakfast in the morning; 3) Currently on a medically prescribed or slimming diet; 4) Undergoing medical treatment that may interfere with the study outcome as assessed by the research physician; 5) Reported lactating (or lactating 10 h/w; 8) Reported weight loss/gain > 10% of body weight in the 6 month preceding pre-study examination; 9) Reported participation in another biomedical trial 3 months before the start or before last dosing; 10) The habit of smoking during the past 6 months or using nicotine containing products during the past month; 11) Reported participation in night shift work (1 week before screening and during the study); 12) Colour-blindness or self-reported dyslexia; 13) Participation in pilot study (only for main study).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Pilot: To investigate whether there is a significant difference in variability of performance on attention tests between the pilot and previous studies conducted by Unilever. Hoofdonderzoek: To show that black tea improves attention using attention tests. | — |
Secondary
| Measure | Time frame |
|---|---|
| Not applicable. | — |
Countries
Netherlands
Outcome results
None listed