Gross motor control is the ability to make large, general movements (such as waving an arm or lifting a leg). It requires proper coordination and function of muscle, bones, and nerves.
Gross motor control is a milestone in the development of an infant.
Infants develop gross motor control before they develop the ability to make small, precise movements known as fine motor control.
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Onigbanjo MT, Feigelman S. The first year. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 22.