Fear Clinical Trial
Official title:
Behavioral Consequences of Blunting Fear With Acetaminophen
NCT number | NCT05396677 |
Other study ID # | 21-07-024 |
Secondary ID | |
Status | Recruiting |
Phase | N/A |
First received | |
Last updated | |
Start date | May 2022 |
Est. completion date | December 2022 |
This study investigates the effects of acetaminophen on behavioral, physiological, and self-report fear responses.
Status | Recruiting |
Enrollment | 266 |
Est. completion date | December 2022 |
Est. primary completion date | December 2022 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - 18 years or older - Literate - Speaks English - Does not have any risk factors associated with acetaminophen (history of liver or kidney disease, taking other products with acetaminophen, has any allergies to acetaminophen, taking blood-thinning medications, drinks more than 12 alcoholic drinks per week for females, or more than 15 alcoholic drinks per week for males, are/ could be pregnant) - Has taken acetaminophen in the past without any adverse reactions - Is not diabetic - Did not have anything to eat within three hours of study time - Did not have any acetaminophen or alcohol in the 48 hours prior to study - Has never had an adverse reaction to virtual reality before, such as headaches or nausea Exclusion Criteria: - Younger than 18 - Non-literate - Does not speak English - Has at least one risk factor associated with acetaminophen (history of liver or kidney disease, taking other products with acetaminophen, has any allergies to acetaminophen, taking blood-thinning medications, drinks more than 12 alcoholic drinks per week for females, or more than 15 alcoholic drinks per week for males, are/ could be pregnant) - Has never taken acetaminophen before - Diabetic - Had something to eat within three hours of scheduled study time - Has had acetaminophen or alcohol in the past 48 hours - Has had an adverse reaction to virtual reality in the past, such as headaches or nausea |
Country | Name | City | State |
---|---|---|---|
Canada | University of Guelph | Guelph | Ontario |
Lead Sponsor | Collaborator |
---|---|
University of Guelph | Natural Sciences and Engineering Research Council, Canada |
Canada,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Walking speed on plank in virtual reality | Farthest distance reached on plank / time to get there | 1 hour after taking acetaminophen or placebo | |
Primary | Distance walked on plank | (Unless there are ceiling effects in which >90% of people make it to the end.) Measured in cm walked on a 2 m wooden plank before deciding to turn around and walk back. | 1 hour after taking acetaminophen or placebo | |
Primary | Proportion of time spent looking down at the plank | We will record what participants see in virtual reality while doing the plank walk, and then code the footage to calculate the proportion of time on the plank participants spent looking down at the plank (indicating more anxiety about falling off). | 1 hour after taking acetaminophen or placebo | |
Primary | Decision on whether to do the plank walk again with virtual spiders | After doing the plank walk, participants will be offered an optional second chance to try the same plank walk again but this time with virtual giant spiders around them. | 1 hour after taking acetaminophen or placebo | |
Primary | Verbal Self-Report Fear | While participants are in virtual reality, we will ask them to rate their fear verbally twice, once when they first step onto the plank, and once when they have changed direction (during which the plank tends to shake). They will answer from 0 (no fear or anxiety) to 10 (extreme fear or anxiety). For those who decide to do the plank walk again with virtual giant spiders, they will also rate their self-reported fear in the same manner twice, once when the spiders first appear, and once when they are on their way back to the virtual elevator while surrounded by giant spiders. | 1 hour after taking acetaminophen or placebo | |
Primary | Written Self-Report Fear | After taking off the headset, participants will answer two survey questions. The first is, "How scary do you think most people would agree the act of walking on a virtual plank is?" They will answer on an 11-point scale (0 = Not at all scary, 5 = Moderately scary, 10 = Extremely scary). They will also be asked "How fearful, scared, nervous, or anxious did you personally feel when walking on the virtual plank?" (0 = Not at all fearful or anxious, 5 = Moderately fearful or anxious, 10 = Extremely fearful or anxious). Those who choose to do the second optional plank walk with virtual spiders will answer the same questions about that experience afterwards. | 1 hour after taking acetaminophen or placebo | |
Primary | Heart rate | Average heart rate while on the plank walk, measured with a Polar Verity Sense optical heart rate sensor on forearm. | 1 hour after taking acetaminophen or placebo | |
Secondary | Time to take first step onto plank | Number of seconds it takes participants to leave the virtual elevator for the plank overlooking a virtual 80-story drop. | 1 hour after taking acetaminophen or placebo | |
Secondary | Speed towards virtual elevator after turning around on plank, | Amount of time it takes them to make it back to the starting point after turning around on the plank. It is not clear whether someone who walks faster would be doing so to get back to the feeling safety quicker or because they are less cautious due to less fear, and so this is a secondary measure. | 1 hour after taking acetaminophen or placebo | |
Secondary | Time before needing a break or quitting the virtual reality plank walk | (Unless there are ceiling effects in which >90% of participants do not quit early or need a break). Amount of time before a participant takes their headset off early, to quit or for a break, due to being overwhelmed. | 1 hour after taking acetaminophen or placebo |
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