In this research study, we are trying to understand how stress develops and changes during and after breast cancer treatment. We aim to better understand how the body’s stress systems, such as hormone activity, sleep, and heart rate, relate to emotional well-being and recovery. Stress and mood are connected to biological and behavioral factors, and we will measure these through wearable devices, saliva samples, and brief surveys about daily experiences.

We also want to explore whether digital and biological markers can help identify early signs of stress or emotional distress. To do that, we are combining insights from psychology, physiology, and data science to better understand how the body and mind respond to cancer treatment and recovery.

You may be eligible for this study if you meet the following criteria:

Inclusion Criteria:

• Women ages 18–59

• Currently receiving primary breast cancer treatment (e.g., chemotherapy, radiation, surgery, immunotherapy, etc)

• Reside in Miami-Dade or Broward County

• Able to use a smartphone application independently

• Willing to wear a wrist-worn wearable device continuously

• Willing to self-collect weekly saliva samples at home

• Speak English

Exclusion Criteria:

• Diagnosed neurological or other health conditions that affect motor or cognitive function

• Unable or unwilling to use a smartphone app or wearable device

• Unwilling to provide saliva samples weekly

• Non-English speakers

If you are eligible and choose to participate, you will be involved in the study for about a month. There will be two in-person visits for this study. 

Visit 1

The first visit, which lasts about one hour, will take place at your home, workplace, or at Florida International University, depending on what is most convenient. During this visit, the research team will:

• Set up the wearable device
• Assist with downloading a survey-taking application
• Provide you with step-by-step training on collecting and storing saliva samples
• Run a brief cognitive test
• Perform some physical measurements of your heart function.

Between Visits

Between visits 1 and 2, you will:

• Wear the device on your wrist continuously for 30 days
• Complete surveys on your phone.
• Collect saliva samples once a week at home

Visit 2

The second visit, which lasts about 10 minutes, will take place at your home at the end of the study. The research team will:

• Collect your wearable device and any remaining materials. 

As a participant, you may receive gift cards up to $250 for completing all study activities over the 30-days period. Compensation is based on active participation, meeting weekly requirements, and returning study materials in good condition.

There is no cost for you to participate in our research study.