The interaction between leading and trailing limbs during stopping in humans.

摘要: While the initiation of gait has been well studied, mechanisms stopping forward progression center mass have received less attention. The purpose this current experiment was to examine effects constraining cadence on how body is brought a stop. Lower limb electromyogram (gluteus medius, hamstrings and soleus (SOL)) force plate data were compared between two conditions, walking planned stopping, at three different cadences (100, 125 150% normal cadence). As increased, onset muscle activity prior heel-strike decreased for all muscles except SOL. SOL evident during after walking. times before shorter in became active more rapidly normalized duration remained invariant as increased. This always longer under lead each cadence. reflected by increases braking forces produced leading limb. rate which generated not conditions but increased with increasing Thus, subjects relied trailing