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Static postural control in youth with osteogenesis imperfecta type I

Year: 2017

Pouliot-Laforte A, LemayM , Rauch F, Veilleux LN
1) Research Center Sainte-Justine UHC, Marie Enfant Rehabilitation Center, 5200 rue Bélanger, Montréal, Qc, Canada H1T 1C9; (2) Department of physical activity sciences, Université du Québec à Montréal, 141 Avenue du Président-Kennedy, Montréal, Qc, Can


To assess static postural control in eyes-open and eyes-closed conditions in
4 individuals with osteogenesis imperfecta (OI) type I as compared to typically developing (TD) 5 individuals. The second aim was to explore the relation between postural control and lower-limbs 6 muscle function.
This is a cross-sectional study. Settings: The study was carried out in 7 the outpatient department of a pediatric orthopedic hospital.
22 individuals with OI 8 type I (mean age [range]: 13.1 [6-21] years) and 16 typically developing (TD) individuals (mean 9 age [range]: 13.1 [6-20] years) participated in the study. A convenience sample of participants 10 was selected. Participants were eligible if they were between 6 and 21 years and if they did not 11 have any fracture or surgery in the lower limb in the 12 months prior to testing. Main Outcomes 12
Postural control was assessed through static balance tests and muscle function 13 through mechanograhic tests, on a force plateform. Selected postural parameters were: path 14 length and velocity, 90% confidence ellipse area and the ellipse’s medio-lateral and antero15 posterior axes length. Mechanographic parameters were peak force (kN) and peak power (kW) 16 as measured in the Multiple Two-Legged Hopping and the Single Two-Legged jump, 17 respectively.
OI type I had poorer postural control than TD as indicated by longer and 18 faster displacements and a larger ellipse area. Muscle function was unrelated to postural control 19 in the OI group. Removing visual information resulted in a larger increase in postural control 20 parameters for the OI group compared to the TD group.
A proprioceptive deficit is 21 suggested to explain decreased postural control in individuals with OI type I.

Keywords: Posturography
GID: 4424; Last update: 24.04.2017