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Über mechanische und elektrophysiologische Eigenschaften von so genannt langsamen und schnellen Muskeln - Eine Untersuchung am M.quadriceps femoris von Marathonläufern, Sprintern, Volleyballspielern und Sportstudenten

Über mechanische und elektrophysiologische Eigenschaften von so genannt langsamen und schnellen Muskeln - Eine Untersuchung am M.quadriceps femoris von Marathonläufern, Sprintern, Volleyballspielern und Sportstudenten

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HERING, Gernot, 2000. Über mechanische und elektrophysiologische Eigenschaften von so genannt langsamen und schnellen Muskeln - Eine Untersuchung am M.quadriceps femoris von Marathonläufern, Sprintern, Volleyballspielern und Sportstudenten

@phdthesis{Hering2000mecha-5408, title={Über mechanische und elektrophysiologische Eigenschaften von so genannt langsamen und schnellen Muskeln - Eine Untersuchung am M.quadriceps femoris von Marathonläufern, Sprintern, Volleyballspielern und Sportstudenten}, year={2000}, author={Hering, Gernot}, address={Konstanz}, school={Universität Konstanz} }

Hering, Gernot 2011-03-24T15:38:43Z deposit-license 2011-03-24T15:38:43Z application/pdf deu 2000 Über mechanische und elektrophysiologische Eigenschaften von so genannt langsamen und schnellen Muskeln - Eine Untersuchung am M.quadriceps femoris von Marathonläufern, Sprintern, Volleyballspielern und Sportstudenten On the one hand, there are hints in the literature which suggest a connection between the percentage of fast-twitch muscle fibres in thigh muscles and 100 m record times, on the other hand, few out of the numerous training studies report a transformation in fiber distribution from slow-twitch to fast-twitch fibers. Most longitudinal studies rather show adaptions from fast-twitch to slow-twitch. This contrasts with numerous animal studies which provide evidence for both fiber transformation from MHCIIB via isoforms to MHCI and vice versa from MHCI to MHCIIB. A confusing situation that remains without any conclusive explanation so far.<br />These facts provided the basis for the study at hand which aims to describe the mechanical properties of so-called slow and fast muscle fibers by examining simple voluntary contractions at different levels of demand in order to gain insight into the functional relation between specific training stimuli and fiber properties.<br />For this purpose, 12 short-track runners, 12 volleyball players, 12 marathon runners and 12 students of the faculty of sports were submitted to tests of maximal strength, reflexes, anaerobic strength at two different levels, relaxation and aerobic strength. The anthropometric, strength and EMG data raised in the study were used as a basis for calculating 575 values.<br />The results claim a dominant role of neuronal processes in the development of specific performance parameters of different sports. In order to link muscle innervation and morphological adaption, the Ca2+-system will be discussed. Since intracellular Ca2+ concentration can be seen as a possible trigger for MHC transformation, length and frequency of muscle innervation as well as the specific recruitment of motor units play a decisive role in the structural plasticity of contest specific muscles. This should be considered in the selection of exercise and training methods. About mechanical and electrophysiological properties of so called slow and fast muscles - A study at the M.quadriceps femoris of marathon runners, sprinters, volleyball players and physical education students Hering, Gernot

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

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