Head and body positions affect thermoregulatory tonus in deltoid muscles
Gespeichert in:
Deutscher übersetzter Titel: | Kopf- und Koerperhaltung beeinflusst den thermoregulatorischen Tonus der Deltoideusmuskeln |
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Autor: | Meigal, Alexander Y.; Lupandin, Yuri V.; Hänninen, Osmo |
Erschienen in: | Journal of applied physiology |
Veröffentlicht: | 80 (1996), 4, S. 1397-1400, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 8750-7587, 0021-8987, 0161-7567, 1522-1601 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199605107597 |
Quelle: | BISp |
TY - JOUR AU - Meigal, Alexander Y. A2 - Meigal, Alexander Y. A2 - Lupandin, Yuri V. A2 - Hänninen, Osmo DB - BISp DP - BISp KW - Elektromyographie KW - Kopfhaltung KW - Kältebelastung KW - Körperhaltung KW - M. deltoideus KW - Muskeltonus KW - Reflex KW - Skelettmuskulatur KW - Sportmedizin KW - Thermoregulation LA - eng TI - Head and body positions affect thermoregulatory tonus in deltoid muscles TT - Kopf- und Koerperhaltung beeinflusst den thermoregulatorischen Tonus der Deltoideusmuskeln PY - 1996 N2 - Electromyograms (EMGs) were recorded from both deltoid muscles (DMs) when subjects were sitting, standing, and bending the head laterally at different cold sensations to clarify the role of head and body positions in the thermoregulatory tonus. At room temperature (22øC), neither EMG related to thermoregulatory muscle tonus (TMT) nor were changes in EMG intensity observed during changes in posture. At a cold temperature (5øC), when the subjects felt slightly cold or cold, the averaged surface EMG intensity of TMT was ca. 2-3 micro-V during sitting with the head held upright. The EMG of TMT was 7.23+/-2.99 micro-V in subjects sitting with the head upright when feeling cold and extremely cold and increased to 14.75+/-5.15 micro-V when the subjects stood at ease and to 19.96+/-11.01 micro-V when the subjects stood on tiptoes. Lateral head bending in subjects standing at ease and feeling extremely cold increased the EMG 40-60% in the contralateral DM without any significant effect on the ipsilateral DM. The results suggest that in humans TMT is influenced by tonic postural reflexes. Verf.-Referat SP - S. 1397-1400 SN - 8750-7587 JO - Journal of applied physiology IS - 4 VL - 80 M3 - Gedruckte Ressource ID - PU199605107597 ER -