%0 Journal Article %T Peritraumatic tonic immobility is associated with posttraumatic stress symptoms in undergraduate Brazilian students %A Portugal %A Liana Catarina L %A Pereira %A Mirtes Garcia %A Alves %A Rita de C¨¢ssia S %A Tavares %A Gisella %A Lobo %A Isabela %A Rocha-Rego %A Vanessa %A Marques-Portella %A Carla %A Mendlowicz %A Mauro V %A Coutinho %A Evandro S %A Fiszman %A Adriana %A Volchan %A Eliane %A Figueira %A Ivan %A Oliveira %A Let¨ªcia de %J Revista Brasileira de Psiquiatria %D 2012 %I Associa??o Brasileira de Psiquiatria (ABP) %R 10.1590/S1516-44462012000100011 %X objective: tonic immobility is a defensive reaction occurring under extreme life threats. patients with posttraumatic stress disorder (ptsd) reporting peritraumatic tonic immobility show the most severe symptoms and a poorer response to treatment. this study investigated the predictive falue of tonic immobility for posttraumatic stress symptoms in a non-clinical sample. methods: one hundred and ninety-eight college students exposed to various life threatening events were selected to participate. the posttraumatic stress disorder checklist - civilian version (pcl-c) and tonic immobility questions were used. linear regression models were fitted to investigate the association between peritraumatic tonic immobility and pcl-c scores. peritraumatic dissociation, peritraumatic panic reactions, negative affect, gender, type of trauma, and time since trauma were considered as confounding variables. results: we found significant association between peritraumatic tonic immobility and ptsd symptoms in a non-clinical sample exposed to various traumas, even after regression controlled for confounding variables (¦Â = 1.99, p = 0.017). conclusions: this automatic reaction under extreme life threatening stress, although adaptive for defense, may have pathological consequences as implied by its association with ptsd symptoms. %K posttraumatic stress disorder %K tests [interviews-psychometric] %K community mental health (public health) %K other research areas (tonic immobility) %K other patient groups [issues (non-clinical sample)]. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-44462012000100011&lng=en&nrm=iso&tlng=en