Kinesiology 3347A/B Chapter Notes - Chapter 9: Grip Strength, Golf Ball, Tennis Ball
5 Apr 2017
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Manipulative skills & the model of constraints: consider picking up a bowl, environment: gravity, task: shape of bowl. More on grasping: how do you shape your hand to pick up the following, golf ball, tennis ball, baseball we use body scaling. Body scaling: adapting to characteristics of task/environment to fit overall size of the body part; similar actions can be carried out because body scaled ratio is constant. Body scaling in grasping: grip movements are body scaled, key = hand size relative to object size, visual systems in infant are lacking for grasp accuracy, touch-then-grasp strategy, helps compensate for a not fully developed visual system. Reaching: within the first few months, infants exhibit random arm movements (prereaching, to reach objects, infants learn to control their arms they learn by experience. Hand mouth movements: at 3 to 4 months, infants become consistent in moving the hand to the mouth, this is also the time prereaching transitions to reaching.
