Laterality of Stance during Optic Flow Stimulation in Male and Female Young Adults

During self-motion, the spatial and temporal properties of the optic flow input directly influence the body sway. Men and women have anatomical and biomechanical differences that influence the postural control during visual stimulation. Given that recent findings suggest a peculiar role of each leg...

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Bibliographic Details
Published in:BioMed research international 2015-01, Vol.2015 (2015), p.1-9
Main Authors: Raffi, Milena, Squatrito, Salvatore, Piras, Alessandro, Persiani, Michela
Format: Article
Language:English
Subjects:
Adult
Bioengineering
Comparative analysis
Extremities, Lower
Female
Foot - physiology
Gender
Humans
Leg
Male
Optic Flow - physiology
Photic Stimulation
Physiological aspects
Postural Balance - physiology
Posture
Posture - physiology
Software
Visual perception
Women
Young Adult
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Summary:During self-motion, the spatial and temporal properties of the optic flow input directly influence the body sway. Men and women have anatomical and biomechanical differences that influence the postural control during visual stimulation. Given that recent findings suggest a peculiar role of each leg in the postural control of the two genders, we investigated whether the body sway during optic flow perturbances is lateralized and whether anteroposterior and mediolateral components of specific center of pressure (COP) parameters of the right and left legs differ, reexamining a previous experiment (Raffi et al. (2014)) performed with two, side-by-side, force plates. Experiments were performed on 24 right-handed and right-footed young subjects. We analyzed five measures related to the COP of each foot and global data: anteroposterior and mediolateral range of oscillation, anteroposterior and mediolateral COP velocity, and sway area. Results showed that men consistently had larger COP parameters than women. The values of the COP parameters were correlated between the two feet only in the mediolateral axis of women. These findings suggest that optic flow stimulation causes asymmetry in postural balance and different lateralization of postural controls in men and women.
ISSN:2314-6133
2314-6141
DOI:10.1155/2015/542645