Participate in a Study

Current Opportunities

OR-FACE –Mobile Toolbox Safety Talks:

The OR-FACE program works to prevent occupational fatalities in Oregon State. OR-FACE identifies high risk industries and develops interventions to improve worker safety. See more about our program here. The OR-FACE Mobile Toolbox Safety Talk study is testing the effects of digital safety talk delivery on construction worker safety.

All supervisors currently working in any construction field are welcome to participate. Participants will receive one safety talk, via text and email, every other week for 14 weeks. Participants will also be asked to complete two short surveys, one at the start and one at the end of the three month study. On weeks when no talks are sent, participants will receive a two-question poll. Participating supervisors will receive $60 in cash as compensation.

If you want to participate, please contact the OR-FACE program at orface@ohsu.edu

Circadian Rhythms and Cardiovascular risk:

This study aims to investigate how behaviors and the body's internal clock affect the control of the heart and blood pressure. After 2-4 screening visits, eligible study volunteers will maintain a set sleep schedule at home for up to 3 weeks and then spend 5 consecutive days and nights at our facility while sleep, blood pressure, and other tests and measurements are performed.

Eligible study volunteers will be between the age of 30 and 80 years old with a BMI less than 40 who have no current or previous history of pharmacological hypertension treatment. Eligible participants may have a diagnosis of sleep apnea. Further eligibility is determined during a medical evaluation at no cost to you. Receive up to $1,800 for study completion as well as reasonable parking and transportation cost coverage.

If you are interested in participating, please access our pre-screening survey here:

http://is.gd/circadian

Cannabis Use Habits and Sleep:

We are seeking subjects to take part in a ~15 minute online research survey about cannabis (i.e. marijuana/hash) use habits including method of ingestion, strain, concentration of cannabis components, and sleep quality.

Eligible participants will be 18+ years old and currently using cannabis products for sleep. You will be adding to research in the field of cannabis, which aims to reduce associated harms while increasing benefits. By completing the survey, you will also be added to a drawing for a $50 Amazon gift card.

If you have used marijuana in the past 24 hours, access the survey here:

http://is.gd/cansleep

Vitamin C and Cardiovascular Risk

We are looking for healthy people aged 40-60 for a study focused on Vitamin C and sleep. We are investigating how a single dose of Vitamin C affects blood vessels during daily morning activities (such as exercise and changes in posture). 

Eligible participants may be lean or overweight (BMI<30) with no current medication use and no history of cancer, heart disease, or other chronic illness. Participants currently taking Vitamin C supplements or eating more than 14 servings of fruit/vegetables weekly will be excluded. Initial screening involves 2-4 hospital visits followed by establishing a 1-2 week home sleep and activity routine. If successfully completed, this will be followed by two separate overnight in-lab stays. Compensation up to $445 will be provided. If you are interested in participating, please access our pre-screening survey here:

https://is.gd/OHSUVITC

Circadian Mechanisms of Cardiovascular Risk in Obesity

We are looking for healthy people aged 35-65 for a study focused on body weight and sleep. We are investigation how behaviors (such as exercise and changes in posture) and the body's internal clock (called the circadian rhythm) affect the control of the heart and blood pressure. Eligible participants may be lean or overweight with no current medication use and no history of cancer, heart disease, or other chronic illness. Initial screening involves 2-4 hospital visits followed by establishing a 1-3 week home sleep and activity routine. If successfully completed, this will be followed by a 5 day in-lab stay. Compensation up to $1,700 will be provided.

If you are interested in participating, please access our pre-screening survey here:

https://is.gd/bodyweightsleep

Upcoming Studies

Recruiting for the following studies will begin soon. If you are interested in being contacted for future screening please email: circadian@ohsu.edu 

THC and Sleep 

We are looking for volunteers for a study on the effect of tetrahydrocannabinol (THC) on sleep in humans. Eligible participants will be between the age of 21 and 34 years old with a BMI less than 30 and free of any acute, chronic or debilitating medical conditions. Participants may be regular cannabis users (smoked, or digested weekly for the past 3 months) or controls with no cannabis use. Initial screening involves 2-3 clinic visits (<8 hours total) followed by establishing a 1-3 week home sleep and activity routine. If successfully completed, this will be followed by a 3 night in-lab stay including administration of oral THC. Compensation up to $755 will be provided. 

Health Disparities in Hypertension

We are looking for healthy people aged 40-60 for a study focused on hypertension and sleep. We are investigation how behaviors (such as exercise and changes in posture) and the body's internal clock (called the circadian rhythm) affect the control of the heart and blood pressure. Eligible participants may have normal blood pressure or have mild hypertension with no current medication use and no history of cancer, heart disease, or other chronic illness. Initial screening involves 2-4 hospital visits followed by establishing a 1-3 week home sleep and activity routine. If successfully completed, this will be followed by a 6 night in-lab stay. Compensation up to $2,400 will be provided.