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 undergoing or have completed breast cancer treatment (e.g., chemotherapy, radiation, surgery, hormonal therapy, or immunotherapy) within the past 5 years

• 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 provide weekly saliva samples

• 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

The entire study lasts about 4 weeks. Once enrolled, participation involves the following:

In-person Visits:

• 2 in-person visits — one at the beginning and one at the end of the study.
• *Visits can take place at your home, workplace, or at Florida International University, depending on what’s most convenient for you. 
  • During the first visit, you’ll receive a wrist-worn wearable device, help setting up a smartphone app, and instructions for collecting saliva samples.
  • During the final visit, the research team will collect the device and materials and review your experience.

Remote, Daily Activities:

• Wear a wristband continuously for 30 days to track movement, sleep, and heart rate.
• Complete short surveys on your smartphone or computer about your mood, stress, fatigue, and daily experiences.
• Collect saliva samples once per week, providing three samples in one day (morning, afternoon, and evening).

Participation is designed to fit into your daily routine and can be done mostly from home!

As a participant, you may receive gift cards up to $250 for completing all study activities over the 4-week 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.