Development of energy and time parameters in the walking of healthy human infants

摘要: Sixteen infants were analyzed longitudinally from the onset of independent walking to 3 years age using time parameters, speed and energy recovery. Considerable variation irregularities observed in many parameters infant walking, especially until 13 months when had difficulty steadily step by step. Infant was characterized a small braking duration, caused mainly forward inclination trunk, large relative stance phase which maintained static balance, short stride length, due range lower limb joint angle, recovery external energy. These characteristics also predominantly evident age. The characteristic flexed joints, pronounced output, younger infants, slow speed. maximum up 2 age, though smaller than adults, appeared at about 0.45 dimensionless speed, is same that adults particular naturally their appeared. trunk influenced development bipedal walking.