Effect of a Wrist-worn Device That Produces a Small Vibration on Sleep and Performance That Can Occur During and After Night Shift Work

Eligibility Criteria

• 1. are 18 years of age or older;
• 2. have not been diagnosed or told by a healthcare clinician that they have a medical condition that may impact their blood pressure or cardiovascular health/system;
• 3. can abstain from smoking tobacco or chewing tobacco / nicotine products during the protocol and data collection;
• 4. can abstain from alcohol and moderate to high intensity exercise during the protocol and data collection;
• 5. are not prescribed medications or take over the counter medications that may impact blood pressure or heart rate (a team physician will review any reported medications identified during screening);
• 6. do not have a physical condition that may interfere with application of non-invasive devices on the wrist, upper arm, or chest for purposes of data collection with non-invasive devices;
• 7. feel that they can avoid working and complete the study protocol without interruption.
• 8. a public safety or healthcare shift worker based on standard licensing / certification requirements in the state of Pennsylvania.
• 1. a medical condition or diagnosis that may impact their blood pressure or heart rate;
• 2. taking any standing medications or prescriptions, other than over the counter medications or contraceptives, that may impact their blood pressure or heart rate;
• 3. are unable to adhere to the study protocol that involves abstaining from alcohol, tobacco products (nicotine), and moderate to intense exercise during the study protocol and data collection periods;
• 4. have a physical condition that may limit use of non-invasive devices applied to the wrist, upper arm, or chest for data collection purposes.
• 5. being pregnant.
• 6. "heavy" alcohol use as defined by the CDC (8 or more drinks per week in women or 15 or more drinks per week in men)?