Thomas Schlieck - Stressresistenztraining und Life Kinetik - Flanke1 

Thanks for the upload! What are they wearing though? sunglasses or something?

@navyseal4404 this is an eye-patch, not much reaserch on this but interesting tool, you reduce some sort of information (i.e. vision) so the athlete have to relay of other sources of information (i.e. prioproception), how it affects performance in long term is not known...

Psicocinetica ed uscita alta : OK. Non capisco, però, perchè i portieri hanno gli occhiali scuri.

bei 2:17 sagt er rot blau gelb rot und der torwart macht aber rot blau rot gelb rot und der towarttrainer sagt ok er wusste warscheinlich selber nicht mehr die farben:D