This study will evaluate post-beverage subjective caffeine responses and physiological responses to caffeinated beverage variations in generally healthy adults.
This will evaluate post-beverage subjective caffeine responses using visual analog scale questionnaires, mood, quality of life, and physiological responses to ingredient variations in caffeine beverages.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
TRIPLE
Enrollment
75
Participants will consume a caffeinated beverage with variations in sweetener and caffeine content.
Participants will consume a caffeinated beverage with variations in sweetener and caffeine content.
Participants will consume a caffeinated beverage with the control level of sweetener and caffeine content.
Alethios, Inc.
San Francisco, California, United States
Subjective caffeine visual analog scales
Participants will rate how they feel on a horizontal line. Lines will be flanked with perceived feelings. Scores range from 0-100, where a higher score indicates increase in that feeling.
Time frame: Day 5
Subjective caffeine visual analog scales
Participants will rate how they feel on a horizontal line. Lines will be flanked with perceived feelings. Scores range from 0-100, where a higher score indicates increase in that feeling.
Time frame: Up to 5 hours after beverage consumption
Subjective quality of life ratings
Participants will rate how they feel using a Likert scale from 0-5. Where higher score indicate higher frequency in that feeling.
Time frame: Day 5
Physiological response - Sleep
Sleep time in hours will be collected on wearable-derived algorithms (Apple Health, Garmin, or Fitbit).
Time frame: Up to 5 hours post-beverage consumption and after 5 days of daily beverage consumption
Physiological responses - Activity
Activity in step count will be collected on wearables (Apple Health, Garmin, or Fitbit) via accelerometry.
Time frame: Up to 5 hours post-beverage consumption and after 5 days of daily beverage consumption
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