![]() ![]() All the segmental mass and COM values obtained from the force plate method were within the range of those of the other methods for the entire sample. The proposedmethodwas tested in individuals with different body mass index (i.e., lean, normal, and obese) to verify its sensitivity. ![]() This study presented a simple force plate method that can be used to determine subject-specific segment masses and COM locations and compared it to otherwell-known methods. The present clinical methods are limited to similar populations from which the anthropometric measures were obtained. These inertial properties are estimated from methods involving cadavers or living individuals. Results suggest that one SAA per segment is sufficient to predict the dynamics of a biomechanical model of any degrees of freedom.īody segment masses and center of mass (COM) locations are required to calculate intersegmental forces and net joint moments using inverse or forward dynamics equations. A telescopic inverted pendulum model was adopted to analyze the balance control in rSTS using only predicted CoP and CoM. Using De Leva’s parameters in place of those estimated, RMSEs increase from 12 to 21 N (F X ), from 21 to 24 N (F Z ), and from 21.1 to 55.6 mm (CoP) in rSTS similarly, RMSEs increase from 3.1 to 3.3 N (F X ) and from 5.5 to 6.6 mm (CoP) in oscillatory trials. These predicted dynamic variables, as well as those obtained using anthropometric parameters derived from De Leva, were compared to actual FP outputs in terms of root mean-squared errors (RMSEs). After this preliminary estimation, the accelerometer alone is used to make quasi-real-time predictions of ground reaction force (anterior/posterior, F X, and vertical, F Z, components), center of pressure (CoP) and center of mass (CoM), during rSTS and postural oscillation in the sagittal plane. This paper proposes a 2D functional evaluation tool for estimating subject-specific body segment parameters, which uses a simple motor task (repeated sit-to-stand, rSTS), recorded with one single-axis accelerometer (SAA) per segment and a force plate (FP). ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |