Electromyographic Assessment of the Lower Leg Muscles during Concentric and Eccentric Phases of Standing Heel Raise

Only a small number of muscle activation patterns from lower limbs have been reported and simultaneous several limb muscles not yet investigated. The purpose this study was to examine any gender differences in surface electromyography (EMG) activity six recorded the dominant at baseline (i.e., with foot placed flat on floor neutral position), during concentric eccentric phases when performing heel raise task. In total, 10 females males performed standing task comprising three continuous phases: baseline, unloading (concentric action), loading (eccentric action) phases. Muscle (gastrocnemius medialis, gastrocnemius lateralis, soleus, tibialis anterior, peroneus longus, brevis) were measured using Myon 320 EMG System. Root mean squared values each calculated for phase. Descriptive inferential statistics incorporated into study. Statistically significant p set 0.05. results showed no between concentric, respect Except medialis phases, observed genders or contractions. data suggests that does significantly influence phase