This study was designed to assess musculo-tendinous stiffness of the head-neck segment in response to quick-release in flexion and extension. Musculo-tendinous stiffness of the neck was calculated using analysis of head kinematics with optimization procedure during the first 30 ms after the acceleration peak following the release at different exertion levels (20 % to 70 % MVC). Results showed a linear relationship between torque and musculo-tendinsous stiffness for flexion (R = 0.82, P < 0.5) and extension (R = 0.69, P < 0.05). Resultas shows also an increase of moment of inertia with torque. Correlation between stiffness and torque indicates that quick-release perturbations applied to the head associated with optimization procedure to assess head kinematics provide an attractive approach to investigate head-neck musculo-tendinous stiffness. In addition, changes noticed on head-neck moment of inertia shows that mechanical properties evaluated in this study could be altered by modifications of geometry of the corporal segment induced by exertion level.
Weitere Kapitel dieses Buchs durch Wischen aufrufen
Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten
Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:
- In vivo Neck Musculo-Tendinous Stiffness in Response to Quick-Releases
- Springer Berlin Heidelberg