The Kuratowski–Dugundji theorem that a metrizable space is an absolute (neighborhood) extensor in dimension n iff it is LCn−1&Cn−1 (resp., LCn−1) is extended to a class of non-metrizable absolute (neighborhood) extensors in dimension n. On this base, several facts concerning metrizable extensors are established for non-metrizable ones.

Materials and Methods: Thirty male patients who had nonspecific chronic low back pain were randomly assigned to either core stability training or dynamic strength training for 8 weeks. Peak torque of trunk flexors and extensors were evaluated using the Biodex Isokinetic System; and endurance time for flexors, extensors, and lateral trunk musculatures were evaluated through McGill’s core enduran...

Introduction. The primary purpose of the present paper is to express the Mth order intrinsic derivative of a higher order absolute tensor such as T, Tab, or T$ as a contraction of extensors. As a first step, we develop a rule for constructing extensors of the types E'fi\ Eaa.pi» E°e;¥a from absolute tensors T , Tab, T% by repeated differentiation with respect to the curve parameter followed by ...

Transcranial direct current stimulation (tDCS) is used as a noninvasive tool to modulate brain excitability in humans. Recently, several studies have demonstrated that tDCS applied over the motor cortex also modulates spinal neural network excitability and therefore can be used to explore the corticospinal control acting on spinal neurons. Previously, we showed that reciprocal inhibition direct...

The aim of this study was to perform a comparative analysis of maximal muscle torques at individual stages of development of athletes and to determine the relationship between muscle torques, fighting methods and the level of sports performance. The activity of 25 judo contestants during judo combats and the effectiveness of actions were evaluated. Maximum muscle torques in flexors/extensors of...

Quantitative telemetered electromyography from the four heads of the quadriceps femoris (vastus medialis, rectus femoris, vastus intermedius and vastus lateralis) during normal postures and locomotion (quadrupedal resting, walk/run, gallop and leaping) is presented for the brown lemur, Lemur fulvus. The vastus intermedius is the sole contributor to muscle recruitment during quadrupedal resting ...

abstract   introduction: balance is one of the most important contexts in ageing. improving balance in middle age can prevent falling down in elderly which impose the financial and mental costs to society. imbalance between dominant and non-dominant leg can lead to some problems. that’s way; studying effects of similar exercise on dominant and non-dominant legs of body can prevent problems caus...