TABLE 1.

Definitions of factors affecting parent and child reserve capacity.

Factor	Definition
Child
Symptom severity	The severity of SEBD-related disregulation experienced by the child at a given point in time. Can fluctuate and affect child PA perceptions and engagement differently across time.
Medication side effects	Physical effects of psychotropic medications affecting PA engagement, including lethargy and weight gain.
Coping strategies	Non-pharmacologic tools a child feels able to implement to manage their symptoms and impacts on wellbeing.
Perceived discrimination	Perceived stigma, judgment, and exclusion related not only to the child’s SEBD, but also intersectional characteristics such as race/ethnicity, gender identity, and/or sexual orientation.
Previous PA experiences	Positive, negative, or neutral experiences the child has had engaging in PA in previous programs and settings.
Social support	Friend/peer/adult relationships external to the child’s extended family that provide child social support.
Clinical support	Ongoing clinical care that supports child wellbeing and symptom regulation/alleviation.
Parent/family support	Family-based emotional, financial, and logical support for the child. Can include parent/caregivers, siblings, and extended family.
School support	Educational, learning, and social supports provided by academic institutions. These may be human (e.g., teachers and aids) or structural (e.g., accessible learning spaces, individualized educational plans).
Existing health behaviors	Child health habits that affect SEBD symptoms and overall wellbeing, such as sleep, nutrition, screen time, and PA.
Parent
Financial security	The extent to which the parent has both adequate income to meet family needs, including care for their child with SEBD, and savings to meet unexpected or future financial demands, such as long-term care for their child after the parent’s death.
Parent health	Parent physical and mental health.
Child health and safety	Child physical health and safety, including concerns about suicidality, substance use, and criminal justice risk.
Child disregulation	The severity of SEBD-related child disregulation experienced by the parent at a given point in time. Can fluctuate and affect parent perceptions and willingness/ability to support child PA engagement differently across time.
Perceived discrimination	Perceived stigma, judgment, and exclusion related not only to their child’s SEBD, but also the parents’ own intersectional characteristics such as mental health challenges, race/ethnicity, gender identity, and/or sexual orientation.
Social support	Perceived parental social support.
Job flexibility	The extent to which a parent can set their own hours, take time off, or work remotely to provide care, transportation, or attend appointments with their child.
Access to care	Includes characteristics of health insurance and availability of quality health care for the parent and child.
Family safety net	Parental perceptions of tangible resources available to provide for family needs in the event of financial, health, or other crises (e.g., house foreclosure, job loss, and divorce) in addition to what the parent alone can provide.
Education and training	Level of parent educational attainment and SEBD-related parenting training.