Physiological muscle tremor in boys and girls
Gespeichert in:
Deutscher übersetzter Titel: | Physiologischer Muskeltremor bei Jungen und Maedchen |
---|---|
Autor: | Gajewski, J.; Iskra, L.; Wit, A. |
Erschienen in: | Biology of sport |
Veröffentlicht: | 8 (1991), 2, S. 71-76, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0860-021X, 2083-1862 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199311051283 |
Quelle: | BISp |
Abstract
The phenomenon of forearm tremor was examined in boys and girls, aged 14 - 19, actively practising sports. Acceleration of a selected point of the hand kept as motionless as possible was measured by using a microcomputer with an A/D-converter and recorded on floppy disks. The sequences of samples underwent an off-line numerical processing. Power spectrum density functions for the signal measured were obtained for all subjects. The tremor acceleration was shown to have log-normal distribution. In the averaged PSD functions maxima were found at about 3, 7 and 10 Hz. Statistically significant differences between the variances in male andfemale groups were observed. Verf.-Referat