posture definitions Flashcards
posture
general term that is defined as a position or attitude of the body
the relative arrangement of body parts in relation to each other
optimal posture
the body segments are all aligned vertically
line of gravity passes through the joint axes
normal human anatomy makes this possible
correct posture
when the line of gravity falls close to, but not through, most axis
in normal standing posture, there is minimal amount of stress applied to the joint (less compression of our joints)
faulty posture
any position that increases stress to the joints
will result in injury, limitation of motion or deformity
–> gravity has a larger moment arm, external torque, internal torque
———> more stress (compression) on our joints
static posture
the non-moving, stationary alignment
positions of standing, lying or sitting
dynamic posture
the position that the body and its segments assume while moving
walking, running, throwing, lifting, etc.
line of gravity (LOG)
the resultant force of the force of gravity of each body segment
postural stability
when the center of gravity of the body lies w/in the base of support