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Université de Fribourg

The drop height determines neuromuscular adaptations and changes in jump performance in stretch-shortening cycle training

Taube, Wolfgang ; Leukel, Christian ; Lauber, B. ; Gollhofer, Albert

In: Scandinavian Journal of Medicine & Science in Sports, 2011, p. -

There is an ongoing discussion about how to improve jump performance most efficiently with plyometric training. It has been proposed that drop height influences the outcome, although longitudinal studies are missing. Based on cross-sectional drop jump studies showing height-dependent Hoffmann (H)-reflex activities, we hypothesized that the drop height should influence the neuromuscular...

Université de Fribourg

Spinal reflex plasticity in response to alpine skiing in the elderly

Lauber, B. ; Keller, Martin ; Gollhofer, Albert ; Müller, E. ; Taube, Wolfgang

In: Scandinavian Journal of Medicine & Science in Sports, 2011, vol. 21, no. s1, p. 62–68

The present study was designed to assess the influence of 12 weeks (28.5±2.6 skiing days) of alpine skiing on spinal reflex plasticity, strength and postural control in senior citizens. Therefore, soleus H-reflexes and postural stability were measured during bipedal quiet and unstable stance in 22 (12 male and 10 female) elderly subjects aged 66.6±1 years. Furthermore, the maximal isometric...

Université de Fribourg

Changes in predictive motor control in drop-jumps based on uncertainties in task execution

Leukel, Christian ; Taube, Wolfgang ; Lorch, Michael ; Gollhofer, Albert

In: Human Movement Science, 2011, p. -

Drop-jumps are controlled by predictive and reactive motor strategies which differ with respect to the utilization of sensory feedback. With reaction, sensory feedback is integrated while performing the task. With prediction, sensory information may be used prior to movement onset. Certainty about upcoming events is important for prediction. The present study aimed at investigating how...

Université de Fribourg

Short-term pressure induced suppression of the short latency response - a new methodology for investigating stretch reflexes

Leukel, Christian ; Lundbye-Jensen, Jesper ; Gruber, Markus ; Zuur, Abraham T. ; Gollhofer, Albert ; Taube, Wolfgang

In: Journal of Applied Physiology, 2009///doi:10.1152/japplphysiol.00301.2009

During experiments involving ischemic nerve block we noticed that the short latency response (SLR) of evoked stretches in m. soleus decreased immediately following inflation of a pneumatic cuff surrounding the lower leg. The present study aimed to investigate this short-term effect of pressure application in more detail. 58 healthy subjects were divided into 7 protocols. Unilateral stretches were...