Ambulatory children and youth with cerebral palsy have limitations in locomotor capacities and in community mobility. The ability of three locomotor tests to predict community mobility in this population (N = 49, 27 boys, 6-16 years old) was examined. The tests were a level ground walking test, the 6-min-Walk-Test (6MWT), and two tests of advanced locomotor capacities, the 10-meter-Shuttle-Run-...

We construct an A ∞ -category D(C|B) from a given A ∞ -category C and its full subcategory B. The construction is similar to a particular case of Drinfeld’s construction of the quotient of differential graded categories [Dri04]. We use D(C|B) to construct an A ∞ -functor of K-injective resolutions of a complex, when the ground ring is a field. The conventional derived category is obtained as th...

We construct an A∞-category D(C|B) from a given A∞-category C and its full subcategory B. The construction is similar to a particular case of Drinfeld’s construction of the quotient of differential graded categories [Dri04]. We use D(C|B) to construct an A∞-functor of K-injective resolutions of a complex, when the ground ring is a field. The conventional derived category is obtained as the 0-th...

We show that, in any Mal’tsev (and a fortiori protomodular) category E, not only the fibre GrdXE of internal groupoids above the object X is a naturally Mal’tsev category, but moreover it shares with the category Ab of abelian groups the property following which the domain of any split epimorphism is isomorphic with the direct sum of its codomain with its kernel. This allows us to point at a ne...

We present a comparative study of certain invariants defined for group actions and their analogues orbifolds. In particular, we prove that Fadell's equivariant category $G$-spaces coincides with the Lusternik-Schnirelmann orbifolds when is finite.

Interactions between trunk orientation and gait kinetics are proposed to be inevitable for maintaining dynamic balance, and these interactions are unknown for walking on uneven ground. The purpose of this study was to investigate the interaction effects of posture (regular erect, 30°, 50° and 70° trunk flexion) and step category (unperturbed, perturbation, preand post-perturbation) on able-bodi...