Study of momentary posture adjustments under the application of unilateral overload

Author(s)

Monica Peixoto Munhoz

• Document type: Master's Dissertation
• Press: Campinas, SP.
• Institution: Universidade Estadual de Campinas (UNICAMP). Faculdade de Educação Física
• Defense date: 1995-05-22

Examining board members

Roberto Vilarta; Edison Duarte; René Brenzikofer

• Advisor: Roberto Vilarta

Abstract

The main objective of this study is to make a three-dimensional analysis of the posture adjustments of the spínal curvature observed in subjects under a unilateral progressive overload, simulating the action of holding a chíld. For this purpose, we have proposed to study ten female no-sedentary subjects, who didn't present any significative posture deviations wich could interfere in the final results. Considering the fact that the human back is a surface in a three-dimensional space, we have choosen the tridimensional reconstruction methodology from stereoscopic photograph register wich has provided with precision the localization in a three-dimensional euclidian space of twenty anatomic points marked on the spinous processes of the vertebra. The anatomic points were placed with the subject in static and erect position in the definitive place to be photographed. The overload were applied using puppets of 0, 4, 12 and 16 Kg. Before increasing the overload some posture reactions were being accentuated. The most remarkable were the following: posterior trunk dislocation, the accentuation of the thoracic curvature and the accentuation of the scoliotics desviations when avaluable. This shows that, in spite of the individual peculiarities that characterize the posture adjustments in general, it is possible to notice common tendencies. This kind of quantified evidence gives a sound base to the studies and the works for prevention and treatment of posture problems, a trouble that is more and more incorporated in the life of the contemporary man (AU)