Pelvic Area Extension Measurements for Four Types of Lumbopelvic Balance Using Three Different Methods

Inclusion Criteria: * The healthy volunteer must have given his/her informed and signed consent * The healthy volunteer must be insured or beneficiary of a health insurance plan Exclusion Criteria: * The healthy volunteer is participating in another study * The healthy volunteer is in an exclusion period determined by a previous study * The healthy volunteer is under judicial protection, under tutorship or curatorship * The healthy volunteer refuses to sign the consent * It is impossible to correctly inform the healthy volunteer * The healthy volunteer is pregnant, parturient, or breastfeeding * The healthy volunteers had a history of chronic pain or surgery at the hip, the thoracolumbar spine or the sacroiliac area * The healthy volunteer has a hip, knee or ankle abnormality