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Romanian Society for Sports Medicine

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"Medicina Sportiva" No.14 - 2008 The 15-th Sports Medicine Balkan Congress


Antoaneta Cretu, Carmen Gherghel
A.N.E.F.S. Bucharest, Romania

INTRODUCTION. There are a lot of techniques which allow postural oscillation analysis, observed on a subject in orthostatic position, among those, the pressure centre analysis is considered to be a relevant method. The pressure centre can be considered as a nervous system controlled variable, proportionally with the force moment applied with both feet on a standing surface, representing the muscular force necessary for high structure establishment. Pressure center time analysis, can reveal informations about the control postural system. Some authors realised the division of the variables tided of pressure center in 2 categories: global and structural parameters. Global parameters (medium speed) gives a general balance performance representation on a time medium higher than 20 seconds. Structure parameters inform about control processes. Control in proaction which is the main stabilization mechanism process, a sequence of motric anticipation command.
MATERIAL AND METHOD. In this study were tested 2 teams: one formed from ANEFS students, second formed from performance shooting sport’s practicant’s. The test was made with a new postural test software program, which allowes the visualisation of foot pression indicate the body weight center, and the amprents of standing foot. Each subject was tested in standing position 30 seconds. So in the floor surface plan can be established conventionally 2 directions: N-S for anterior-posterior center projection movements, and E-V for laterality. Those movements will register oscillation proportionally with the pressure center instability.
RESULTS AND CONCLUSION. The results show a semnificativ difference between the N-S oscillation for the 2 groups. A possible answer can be that usually the lack of equilibrum has place in the automatic postural answers, speed below 250 msec, which excludes any voluntary control component.
KEY WORDS: pressure center, postural oscillation, postural test software.

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