PA	Physical activity
IPAQ-LF	International Physical Activity Questionnaire-Long Form
PedsQL	Pediatric Quality of Life
SQ	Sleep quality
NS-LPB	Non-specific low back pain
STROBE	Strengthening the Reporting of Observational Studies in Epidemiology
PSQI	Pittsburgh Sleep Quality
VAS	Visual Analogue Scale
SM	Spinal Mouse
ICC	Interclass Correlation Coefficient
PSIS	Posterior superior iliac spine
BMI	Body mass index
MET	Metabolic Equivalent of Tasks
NA	Not applicable
df	Degree of freedom
SD	Standard deviation
SES	Socioeconomic status