Transcript Lab 1 - Motion Description Concepts and Terminology – pp 28-

Lab 1 - Motion Description
Concepts and Terminology – pp 2840 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
Review the meaning of the following
terms on page 30 of Hall text
•
•
•
•
•
•
Superior
Inferior
Anterior
Posterior
Medial
Lateral
•
•
•
•
Proximal
Distal
Superficial
Deep
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 Sagital
Plane
Movements
In Frontal
Plane
Movements in
Transverse plane
Flexion-extension –
All occur in sagital
plane
AbductionAdduction – all
Occur in frontal
plane
Rotation:
All occur in
Transverse
plane