Development of a Lifestyle Physical Activity Intervention to Reduce Risk for Perinatal Cannabis Use - RCT

Inclusion Criteria:

1. women 18+ years of age

2. 12-25 weeks gestation with a healthy singleton pregnancy

3. medically-cleared by their prenatal provider for moderate intensity physicalactivity

4. self-report of cannabis use at least once/week in the 3 months prior to the currentpregnancy and desire to not engage in prenatal CU

5. current psychological distress as defined by Edinburgh Postnatal Depression Scalescore >7 and/or Generalized Anxiety Disorder 7 score >5)

6. English-speaking

7. owns a smartphone to enable use of the Fitbit app

8. current physical activity level does not meet public health recommendations (lessthan 150 minutes/week moderate intensity physical activity for the past 3 months)

9. expresses interest in reducing or discontinuing CU

Exclusion Criteria:

1. current DSM-5 diagnosis of moderate/severe substance use disorder other thancannabis use disorder or nicotine use disorder

2. use of illicit substances in the last 3 months (other than cannabis)

3. acute psychotic symptoms

4. current or recent suicidality or homicidality

5. current anorexia or bulimia

6. current cognitive impairment

7. physical or medical problems that would not allow safe participation in moderateintensity physical activity

8. has plan to relocate away from the geographic area during the study intervention orassessment period

9. recently started a new form of mental health or substance use treatment within thepast 4 weeks