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The purpose of the current study was twofold: (1) to determine the isometric force and electromyographic (EMG) relationship of the sternocleidomastoid, splenii and trapezii muscles bilaterally in graded and maximal exertions in the sagittal, coronal and oblique planes. and (2) to develop regression equations to predict force based on the EMG scores. A newly(More)
To the memory of A. Ramanathan Let G be a semisimple, simply connected algebraic group over an algebraically closed field of characteristic p > 0. Let U be the unipotent radical of a Borel subgroup B ⊂ G and u the Lie algebra of U. Springer [16] has shown for good primes, that there is a B-equivariant isomorphism U → u, where B acts through conjugation on U(More)
In this paper we consider the eigenvalue problem, intersection theory of homogenous spaces (in particular, the Horn problem) and the saturation problem for the symplectic and odd orthogonal groups. The classical embeddings of these groups in the special linear groups will play an important role. We deduce properties for these classical groups from the known(More)
The generalized triangle inequalities for rank 3 symmetric spaces of noncompact type. Abstract We compute the generalized triangle inequalities explicitly for all rank 3 symmetric spaces of noncompact type. For SL(4, C) there are 50 inequalities none of them redundant by [KTW]. For both Sp(6, C) and Spin(7, C) there are 135 inequalities of which 24 are(More)
EMILY BRALEY: Eigencone Problems for Odd and Even Orthogonal Groups (Under the direction of Prakash Belkale) In this work, we consider the eigenvalue problem for the even and odd orthogonal groups. We give an embedding of SO(2n+1) ⊂ SO(2n+2) and consider the relationship between the intersection theories of homogeneous spaces for the two groups. We(More)
STUDY DESIGN An axial rotation tester was designed and fabricated for the study. This allowed stabilization of seated subjects (hip down) and coupling of shoulders, permitting axial rotation and coupled lateral flexion. Using this device, a "flexion-extension free" axial rotation was executed for studying its characteristics. OBJECTIVES To determine the(More)
Spinal rotation, though being a very common motion of the body, is poorly understood. Furthermore, this motion and the extent of its development is unique to the human. Beyond the extent of its need in common activities, spinal rotation is a destabilizating motion for an inherently unstable structure. Spinal rotation has been argued to be an essential(More)
Electromyographic (EMG) patterns of the trunk muscles were investigated during balance perturbations in a sitting position. Five healthy subjects (two females and three males, mean age 24.4 yr) were seated on a platform allowing rotational perturbations in the frontal and sagittal planes. Each of the forward, backward, right and left perturbations were(More)