Research Study Participation

We invite you to take part in a research study if you are:

• Female sex between 18-40 years old
• Premenopausal with a regular menstrual cycle between 25-35 days and have tracked your menstrual cycle consistently for at least the past three months.
• Willing to wear a Garmin activity tracker device daily including during sleep
• Own a smartphone with the ability to track and sync data via a mobile app
• Not be pregnant, less than 12 months postpartum, or breastfeeding

Additional criteria will be evaluated using an online screener

• Are a recreationally active (≥150 minutes per week of physical activity) male between the ages of 18-35.
• Are willing to come in for all five visits.

• Enrolled UCF student
• Female, aged 18 to 30
• Willing to wear an activity tracker on your wrist for 7 days
• Able to read, write, and provide informed consent in English

Inclusion criteria – ACL group:

• Age 18-35 years
• History of primary unilateral ACL reconstruction (ACLR) within last 2 years
• No history of any lower limb surgery besides the current ACLR
• Medical clearance to initiate jogging

Inclusion criteria – Uninjured group:

• Age 18-35 years
• No history of lower extremity surgery
• No history of lower extremity injury (defined as seeking medical attention) within last 2 years

• At least 14 years old
  • Individuals under the age of 18 must be accompanied by a parent
• Have at least 3 years of ballet experience
• Currently practice dance technique
  • At least 1 hour per week over the past 6 months
• Are familiar with basic ballet terminology

• Are at least 18 years old
• Currently identify as:
  • a dancer
  • a dance parent
  • a dance teach/choreographer/coach
  • a dance studio/company/program director or equivalent

• At least 18 years old
• A licensed or certified healthcare provider
• A student in an accredited professional healthcare program

• Age 12-45 years
• History of knee injury (e.g., ACL tear, meniscus tear, patellofemoral pain, osteoarthritis) or surgery (e.g., ACL reconstruction, meniscectomy or repair, total knee arthroplasty) within the last 2 years