Lecture 1: Terminology Flashcards
Biomechanics
- The physics/mechanics of the motion of the human bodies
- involves principles of anatomy and physics in descriptions and analysis of human movement
- examines forces acting on and within biological structures
Linear motion
- Translational movement (on straight or curved pathway)
- all points on body move same distance, same time
Angular motion
- Motion around some point
- different regions of same body segment do not move through same distance
Kinematics
Examines spatial and temporal (space and time)
Forces are not considered
Kinetics
Examines forces that cause motion
E.g. magnitude, direction, line of action, point of application
Statics
Examines systems not moving or moving at a constant speed
Equilibrium
No acceleration
Fundamental position
Relaxed arms, palms face inward
Ipsilateral vs. Contralateral
On same side vs. on opposite sides
Supination of the foot
Plantarflexion, inversion, adduction
Pronation of the foot
Dorsiflexion, eversion, abduction
Axes
Imaginary lines that intersect at right angles
Origin
Point of axes intersection
Cartesian coordinate system
Specifies each point uniquely in a plane by a pair of numerical coordinates
Polar coordinate system
Two dimensional coordinate system in which each point on a plane is determined by a distance from a reference point and an angle from reference direction
