Biomechanical responses to repeated stretches in human hamstring muscle in vivo
Gespeichert in:
Deutscher übersetzter Titel: | Biomechanische Reaktionen auf wiederholte Dehnungen der menschlichen Hamstrings-Muskeln in vivo |
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Autor: | Magnusson, S.P.; Simonsen, E.B.; Aagaard, P.; Kjær, Michael |
Erschienen in: | The American journal of sports medicine |
Veröffentlicht: | 24 (1996), 5, S. 622-628, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0363-5465, 1552-3365 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199703203424 |
Quelle: | BISp |
TY - JOUR AU - Magnusson, S.P. A2 - Magnusson, S.P. A2 - Simonsen, E.B. A2 - Aagaard, P. A2 - Kjær, Michael DB - BISp DP - BISp KW - Analyse, biomechanische KW - Diagnostische Verfahren KW - Muskeldehnung KW - Muskelelastizität KW - Muskelstiffness KW - Muskeluntersuchung KW - Muskulatur, ischiocrurale KW - Orthopädie KW - Skelettmuskulatur KW - Sportmedizin KW - Untersuchungsmethode LA - eng TI - Biomechanical responses to repeated stretches in human hamstring muscle in vivo TT - Biomechanische Reaktionen auf wiederholte Dehnungen der menschlichen Hamstrings-Muskeln in vivo PY - 1996 N2 - To examine stiffness, energy, and passive torque in the dynamic and static phases of a stretch maneuver in the human hamstring muscle in vivo we used a test-retest protocol and a repeated stretches protocol. Resistance to stretch was defined as passive torque (in newton-meters) offered by the hamstring muscle group during passive knee extension as measured using an isokinetic dynamometer with a modified thigh pad. In 13 uninjured subjects, the knee was passively extended to a predetermined final position (0.0875 rad/sec, dynamic phase) where it remained stationary for 90 seconds (static phase). The test-retest protocol included two tests administered 1 hour apart. On a separate occasion, five consecutive static stretches were administered separated by 30 seconds and followed by a sixth stretch 1 hour later. For the test-retest phase, stiffness and energy in the dynamic phase and passive torque in the static phase did not differ and yielded correlations of r=0.91 to 0.99. During the static phase, passive torque declined in both tests (P<0.0001). For the repeated stretches, decreases were observed for energy (P<0.01) and stiffness (P<0.05) in the dynamic phase and for passive torque (P<0.0001) in the static phase. However, the decline in the variables returned to baseline within 1 hour. The data show that the method employed is a useful tool for measuring biomechanical variables during a stretch maneuver. This may provide a more detailed method to examine skeletal muscle flexibility. Verf.-Referat SP - S. 622-628 SN - 0363-5465 JO - The American journal of sports medicine IS - 5 VL - 24 M3 - Gedruckte Ressource ID - PU199703203424 ER -