2.7 Movement Analysis

Is the science concerned with the internal and external forces acting on a human body or object and the effects produced by these forces

Movement as a joint resulting in the angle between two bones

Movement at a joint resulting in an increase in the angle between the 2 bones

Movement away from the midline of the body

Movement toward the midline of the body Anterior and posterior

Is the area of biomechanics that studies the description motion. This includes how fast, how far and how consistently a body moves

Is simply movement Different types include linear, angular and general motion

Is the motion of a body in a straight line

Is the motion of all parts of the object moving around a fixed point Cartwheel

The fixed point around which and object rotates Can be internal or external

The combination of linear and angular motion. Most human motion is categorised as general motion Eg running

A pro tile is a body that moves through air

Velocity of release - the harder a ball is hit/thrown this higher and further it will go. This is due to the transfer of momentum Angles of release - coaches need to ensure the participants use the correct angles of release Height of release - the higher the point of release relative to the ground the further the ball will travel Shape - streamlined shapes travel more efficiently in the air and travel further due to less drag force pulling the projectile backwards Air resistance - when a projectile pushes through the air it creates a drag force behind it Spin - changes the shape of the parabola depending how it spins

Measures the rate of positional change of an object It includes displacement rather than distance as displacement takes into account directions

Is the area of biomechanics that studies influences on the movement of a body. Where as kinematic describes the appearance of motion kinetics is the study of forces associated with motion

Is the amount of matter that makes up an object Mass directly measures the amount of inertia of a body Inertia is the resistance of any physical object to any change in its state of motion

Is a measure of the amount of motion by a moving body

Is the pushing/pulling effect of a body that can cause change Forces are acted upon a body as a result of interaction with the surrounding environment

Forces can be produced from within the body by muscular contractions Forces can be applied to equipment such as racquets and pedals

A body continues in its state of rest unless acted upon by a force Inertia - the mass on the body will determine the force required to change its state Inertia = speed x mass

The rate of change of acceleration to a body is proportional to the force applied f = ma

For every reaction there is an equal and opposite reaction

The human body is made up of levers in the forms of bones with the joints acting as axis The use of levers allows humans to apply increased drive and to generate greater speed in executing sporting activities

Centre of gravity- the COG of an object can be described as the balance