1. Lab 1 - Motion Description Concepts and Terminology – pp 28-40 of Hall text
Objectives:
Define and provide examples of linear, angular, & general forms of motion
Identify & describe reference positions, planes, and axes associated with the human body
Define & appropriately use directional terms & joint movement terminology

2. Forms of motion (p 28-30)
Linear motion can be either straightline (rectilinear) or curvilinear. The entire object moves from one place to another, or translates
Examples:
Rectilinear -path of a dropped ball (not shown)
Curvilinear - path of thrown ball, path of enter of mass of body while in the air

3. Rotary, or angular, movement can take place around an axis running through a joint (A), through the center of mass (B), or about an external axis (C). All human body segmental movements are rotary. Ex: all body segmental movements, rotation of thrown ball.

4. General, or combination motion is both linear and rotary
General, or combination motion is both linear and rotary. Ex: movement of football. Path is curvilinear, but ball also rotates about its center of mass, which is rotary.

5. Standard Reference Terminology
Review the meaning of the following
terms on page 30 of Hall text
Superior
Inferior
Anterior
Posterior
Medial
Lateral
Proximal
Distal
Superficial
Deep

6. Movement Description
All human body movements are rotary. All basic movements take place within one of three planes (sagital, frontal, or transverse) and around one of three axes running perpendicular to the plane (mediolateral, anterioposterior, or longitudinal)

8. The Three Movement Planes and Axes
Planes (See Figure on next slide)
Transverse (cutting across the segment), frontal (divides segment into front and back sections), and sagital (divides segment into left and right sections)
Axes (See figure on next slide)
mediolateral (side to side), anterio-posterior (front to back), longitudinal, and diagonal (or oblique)

10. There are Only Three General Types of Segmental Movements
Flexion-extension (mediolateral axis, sagital plane)
example: knee and hip while doing squats
Abduction-adduction (anterio-post axis, frontal plane)
example: raising arm to side of shoulder
Rotation (longitudinal axis, transverse plane)
example: turning head to side

11. Movements in Sagital
Plane

12. Movements
In Frontal
Plane

13. Movements in
Transverse plane

14. Flexion-extension –
All occur in sagital
plane

15. Abduction-
Adduction – all
Occur in frontal
plane

16. Rotation:
All occur in
Transverse
plane