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welcome1PRINCIPLES OF LIFE SPAN MOTOR DEVELOPMENT2UNIT IDefinition-Motor Development, Motor Learning, Moto Control, Physical growth, Maturation and Aging-Newells Model of Motor Development-Theoretical perspectives in Motor Development: Maturation, information processing and ecological perspectives- Principles of Motion and StabilityClassification of Motor Activities.3SYNOPSISPrinciples of motion and stabilityParabolic principleNewtons law of motionOppositional movementsRotational movementsInertiaOpen Kinetic chainBalanceCenter of gravity4Principles of motion and stabilityCertain physical laws of motion bound or limit your movements. An example is gravity which constrains interaction and an objects movement. 5Principles of motion and stability act on all movements and movers.

As movers become more proficient at skills, they often use these principles to their advantage.

67Motion is a change in position of an object with respect to time also on its reference point, its typically described in terms of displacement, direction, velocity, acceleration, time and speed.

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Relates to resisting movement. Two footed support base.11

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13Parabolic Principle

When a person projects herself or an object at an angle (as opposed to straight up and down), then the force of gravity will ensure this flight path.

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16 One must apply force to a stationary object to move it, and to a moving object to change its movements.

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19 The acceleration of a person or object is proportional to the force applied to it and inversely proportional to its mass.

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23 The law of action reaction sates that for every force you exert on an object, the object exerts an equal force back on you, in the opposite direction.24

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26Oppositional arm and leg movement

When the lower body twists one way and the upper body twist the opposite way. One leg swings forward and the arm on that side of the body swings backward in reaction; thus the leg on one side of the body and the arm on the opposite side swing forward and back in unison.

27Rotational movementWhen individuals move when their limbs rotate around one or several joints.

2829 Refers to an objects resistance to motion, and its related to the mass of the object.

30Open kinetic chainRefers to the correctly timed sequence of movements an individual uses to successfully perform a skill.

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3233Related to the ability of an object or person to maintain equilibrium. Once footed support base.34

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38The concentration point of the earth's gravitational pull on an individual.

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40Five step process for systematically observing and analyzing skill performanceObserve the complete skill.Analyze each phase and its key elements.Use your knowledge of mechanics in your analysis.Select errors to be corrected.Decide on appropriate methods for the correction of errors41REACH PERFORMANCE(success)

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