BACKGROUND The aim of the study was to carry out a complex analysis of loading and overloading of a musician. MATERIALS AND METHODS Eighty students of music school accordion class, and 60 students of colleges, participated in a pilot test. The test estimated the function of hand muscles, the body statics, the body posture, the presence of spinal curvatures, the time of straight reaction, the ...

Image formation is described by means of modern geometry in terms of topological and geometric curvatures. These curvatures and derived equivalences are a quantisation of the set of rules for constructing the image in particular along discontinuity, singularity and bifurcation sets. A simpliication of the set of construction rules is proposed by applying a dynamic scale-space paradigm. Dynamic ...

Methods A validated patient-specific biomechanical modeling and simulation technique was used to assess the 3D correction of a Lenke-1 AIS case through posterior spinal instrumentation. Uniplanar pedicle screws were bilaterally placed at the 2 proximal, 2 distal, and 3 apical levels. The simulation steps included only the concave side 5.5 mm CobaltChrome rod attachment and its derotation follow...

We investigate the asymptotic behavior of curvatures of the Weil-Petersson metric in Teichmüller space. We use a pointwise curvature estimate to study directions, in the tangent space, of extremely negative curvature and directions of asymptotically zero curvatures.

OBJECTIVE To explore the safety and effect of the technique of reconstructing anterior and middle columns by posterior approach in treating lumbar burst fractures. METHODS From July 2005 to January 2007, 22 cases (18 males and 4 females, aged 28-57 years, 42.7 years on average) of lumbar burst fractures were treated with surgical procedures in our hospital. Based on the routine posterior appr...

BACKGROUND AND PURPOSE Although the relevance of understanding spinal kinematics during functional activities in patients with complex spinal deformities is undisputed among researchers and clinicians, evidence using skin marker-based motion capture systems is still limited to a handful of studies, mostly conducted on healthy subjects and using non-validated marker configurations. The current s...

The aims of this study were: 1) to determine the differences in hamstring extensibility between kneeling and forward legs in a group of canoeists; 2) to compare hamstring extensibility between canoeists and kayakers; and 3) to compare the sagittal spinal posture and pelvic tilt in the maximal trunk flexion with knees extended in kayakers and canoeists. Ninety-nine young male paddlers (17.51±6.1...

Abstract. We construct a sequence of compact embedded minimal disks in the unit ball in Euclidean 3-space whose boundaries are in the boundary of the ball and where the curvatures blow up at every point of a line segment of the vertical axis, extending from the origin. We further study the transversal structure of the minimal limit lamination and find removable singularities along the line segm...

Aging is associated with alterations in thoracolumbar curvatures and respiratory function. Research information regarding the correlation between thoracolumbar curvatures and a comprehensive examination of respiratory function parameters in older adults is limited. The aim of the present study was to examine the correlation between thoracolumbar curvatures and respiratory function in community-...