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Field Dependence And Orientation Of Upside-Down Posture In Water
Summary .— Sensory information from the environment is used for body orientation and maintaining posture for eff ective movement, and the eff ects of specifi c senses on orientation and posture can be tested by removing input. In the present study, fi eld dependence was used to evaluate the importance of vision in the perception of verticality when an upside-down posture was adopted under water. Eleven female synchronized swimmers at the French national level were participants. These swimmers were assessed for fi eld dependence and all of them attempted to orient to the vertical with diff erent types of sensory disturbance (eyes closed,opaque goggles, noiseless environment). Kinematic analyses of body inclination were conducted under the diff erent conditions of sensory disturbance. Participants who were more fi eld-dependent aligned their posture more accurately with the gravitational vertical than those who were more fi eld-independent when the tactile aff erents from the thighs are blocked.
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