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Palacky University Olomouc

2 ARTICLES PUBLISHED IN JoVE

Biology

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions

Christian T. Herbst^1,2, Vit Hampala¹, Maxime Garcia^2,3, Riccardo Hofer², Jan G. Svec¹

¹Voice Research Lab, Department of Biophysics, Faculty of Science, Palacky University Olomouc, ²Laboratory of Bio-Acoustics, Dept. of Cognitive Biology, University of Vienna, ³ENES Lab, NEURO-PSI,CNRS UMR 9197, Université Lyon/Saint-Etienne, France

This paper introduces a protocol for the preparation of hemi-larynx specimens facilitating a multi-dimensional view of vocal fold vibration, in order to investigate various biophysical aspects of voice production in humans and non-human mammals.

Medicine

Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations

Petr Stastny¹, Michal Lehnert², James J. Tufano¹

¹Faculty of Physical Education and Sport, Charles University, ²Faculty of Physical Culture, Palacky University Olomouc

The hamstrings are a group of muscles that are sometimes problematic for athletes, resulting in soft tissue injury in the lower limbs. To prevent such injuries, functional training of the hamstrings requires intensive eccentric contractions. Additionally, hamstring function should be tested in relation to quadricep function at different contraction speeds.