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In a field study two athletes (Austrian Junior Team) were examined. They performed classical diagonal techniques (CDT) on a 200m track (6° slope) and double pole technique (DPT) on an even track. Each technique has been performed with moderate and with maximum velocity. In order to induce mechanical stretch load on the extensor muscles CDT was performed with (WAX) and without (NOWAX) wax-prepared skies. Angular displacement was recorded from the ankle, knee, hip and ipsilateral elbow by means of electrogoniometers (Ernst, Germany; Penny an Giles, UK). Vertical ground reaction forces were detected using insole-systems (Pedar, Germany). Forces acting on the pole were registered via strain gauges attached to the left pole. Running velocity was pre-set by a light barrier system and off-line controlled by videorecording. Superficial EMG was picked um from Mm. soleus (Sol), gastrocnemius m. (GM), vastus m. (VM), tibialis a. (TA), peroneus (PER), biceps f. (BIC), glutaeus maximus (GM), latissimus d. (LD) (left side) and triceps brachii (TB) from the left arm. All channels have been sampled with a frequency of 1000 Hz (Pedar-System 100 Hz) and stored for off-line analysis on a BIOMES-system (Ernst, Germany).;
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