The GM, GL, and SO have been observed to be the primary muscles in initiating the heel raise by contracting powerfully to lift the heel from the ground.

These muscles also assist with foot stability and rigidity during weight bearing tasks including heel raises and push-offs. Lower limb muscles such as the gastrocnemius medialis (GM), gastrocnemius lateralis (GL), soleus (SO), tibialis anterior (TA), peroneus longus (PL), and peroneus brevis (PB) play an important role in absorbing kinetic energy when the foot makes contact with the ground. The data suggests that gender does not significantly influence the eccentric phase during the standing heel raise task.ĭuring human locomotion and everyday movements, muscular activity has been found to dampen soft tissue kinetic vibrations during each heel strike. Except for the gastrocnemius medialis at baseline and concentric phases, no significant differences were observed between genders or contractions. The results showed no significant differences between baseline, concentric, and eccentric phases with respect to each of the muscles investigated. Statistically significant p values were set at 0.05. Descriptive and inferential statistics were incorporated into the study. Root mean squared values of each muscle were calculated for each phase. Muscle activation from six muscles (gastrocnemius medialis, gastrocnemius lateralis, soleus, tibialis anterior, peroneus longus, and peroneus brevis) were measured using the Myon 320 EMG System. In total, 10 females and 10 males performed a standing heel raise task comprising of three continuous phases: baseline, unloading (concentric muscle action), and loading (eccentric muscle action) phases. The purpose of this study was to examine any gender differences in surface electromyography (EMG) activity from six recorded lower limb muscles of the dominant limb at baseline (i.e., with the foot placed flat on the floor and in the neutral position), and during concentric and eccentric phases when performing a heel raise task.

Only a small number of muscle activation patterns from lower limbs have been reported and simultaneous muscle activation from several lower limb muscles have not yet been investigated.

Muscle jumping and pain emg testing