HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Horizontal body and trunk center of mass offset and standing balance in scoliotic girls

Abstract : In adolescent idiopathic scoliotic girls, postural imbalance is attributed to a sensory rearrangement of the motor system on the representation of the body in space. The objectives of this study were to test if the anteroposterior (AP), mediolateral (ML) and resultant body-head and trunk center of mass (COM) horizontal offsets were similar in able-bodied and scoliotic girls and if these offsets were related to the center of pressure displacements. A total of 21 adolescent idiopathic scoliosis girls and 20 able-bodied girls participated in this study. Their body COM position and that of the head and trunk were estimated according to Damavandi et al. (Med Eng Phys 31:1187-1194, 2009). The COP range and speed in both AP and ML axes were calculated from force plate measurements in quiet standing. The AP offset of the able-bodied group was anterior to the body COM by 11.0 ± 15.9 mm, while that of the scoliotic group was posterior to it by -17.3 ± 11.2 mm. The able-bodied group maintained their head-trunk segment COM more to the right by 14.1 ± 13.1 mm, while that of the scoliotic group was nearly over their body centerline. The scoliotic girls presented higher values for COP range and COP speed than the able-bodied girls. The resultant COM offset was correlated with both the ML COP range and speed only for the scoliotic girls. The small ML COM offset in the scoliotic girls was attributed to a compensatory action of the spinal deformity in the frontal plane resulting in a backward resultant COM offset to regain postural balance concomitant to an increase in the ML neuromuscular demand.
Document type :
Journal articles
Complete list of metadata

Contributor : Réunion Univ Connect in order to contact the contributor
Submitted on : Monday, November 23, 2015 - 1:48:42 PM
Last modification on : Saturday, May 7, 2022 - 3:25:34 AM

Links full text




Georges Dalleau, Mohsen Damavandi, Pierre Leroyer, Chantal Verkindt, Charles-Hilaire Rivard, et al.. Horizontal body and trunk center of mass offset and standing balance in scoliotic girls. European Spine Journal, Springer Verlag, 2011, 20 (1), pp.123--128. ⟨10.1007/s00586-010-1554-z⟩. ⟨hal-01232329⟩



Record views