PA	Physical Activity
AP	Academic Performance
HADS	Hospital Anxiety and Depression Scale
DASS-21	Depression Anxiety and Stress Scale 21
GAD-7	Generalized Anxiety Disorder Scale
STAI	State-Trait Anxiety Inventory
SADS	Social Avoidance and Distress Scale
WTAI	Westside Test Anxiety Inventory
MLSQ-SF	Motivated Strategies for Learning Questionnaire (Short Form)
SISCO	SISCO Academic Stress Inventory
EVEA	Escala de Valoración del Estado de Ánimo
SAS	Self-rating Anxiety Scale
DSM-IV	Diagnostic and Statistical Manual of Mental Disorders (4th ed.)
PEP	Perceived Educational Progress
IPAQ	International Physical Activity Questionnaire
GPA	Grade Point Average