Screening the assymetries of the upright posture, in boys aged 13-16 who participate in football academy using the posture screen mobile (psm) application. The reported back pain and relation with weight, placement of the school bag and wrong seated posit

Introduction: Standing attitude is a habit, which is cultivated during childhood in relation to the way of life. (1) The "Posture" is the position of the members of the body between them is defined. The correct posture of the body is the position where the joints receive the minimum tension (2). Adopting a correct posture reduce the malfunctions (eg, back pain) as well as fatigue (3). Purpose: This research study aims to investigate postural asymmetries using the Posture Screen Mobile (PSM) application as well as the back pain reported by children and the relation with weight and positioning of the backpack. Subject: Our study included 30 children, boys, aged 13 to 16 years who participate in a football academy sessions, three times per week with a duration of training one hour. Without recent injuries, chronic disease and musculoskeletal problems that may be the cause of asymmetry of the body .The sample selection was non-randomized. Results: The results of the study showed that 1/3 (23.3%) of children reported signs of back pain with a frequency of pain twice a month. We notice that as the weight of the school bag increasing, there are also increases the deformities observed in the upright attitude with the use of the application (PSM). Moreover, children who have the habit of holding the school bag on one shoulder are more varied. Conclusion: Posture Screen Mobile (PSM) application results that there are differences in translations and angulation in the standing posture that are directly related to the reported back pain with strong indications that the factors that affect the weight of the school bag is significant, as well as its placement. Although no statistically significant differences (p> 0.05)