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

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

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.

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.

Standard Reference Terminology

• Superior

• Inferior

• Anterior

• Posterior

• Medial

• Lateral

• Proximal

• Distal

• Superficial

• Deep

Review the meaning of the following terms on page 30 of Hall text

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)

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)

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

Movements in SagitalPlane

MovementsIn Frontal Plane

Movements in Transverse plane

Flexion-extension –All occur in sagitalplane

Abduction-Adduction – all Occur in frontalplane

Rotation:All occur inTransverseplane