Bigongiari, A.; Cotta, R. F.; Coelho, T.; Souza, A.; Adão, S. C.; Lima, A. P. A.; Prado, C. D.; Araujo, R. C.; Mochizuki, L.
December 2013
Revista Brasileira de Biomecânica;2013, Vol. 14 Issue 27, p76
Academic Journal
Postural control in children involves anticipatory and compensatory postural adjustments. OBJECTIVE: The aim of the study was to further investigate these two components of postural control in typically developing children (N=12, main age 9.4±1.3 years old, main weight 31.7±5.5 kg and mean height 1.40±0.10 m) using the task of the trunk extension. METHODS: Electrical activity of the four lower extremity muscles (biceps femoris, rectus femoris, tibialis anterioris, and gastrocnemius lateralis) as well as changes in the angular position of the hip joint were recorded and analyzed during the anticipatory and compensatory phases of the bending. RESULTS: Higher EMG during compensatory postural adjustments for all muscles. CONCLUSION: The larger co-activation of ankle muscles and the decrease anticipatory activity due to age suggest how children choose an efficient postural pattern to stabilize the posture.


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