lecture 13 gravity and stability Flashcards
____ is a measure of the amount of matter in an object
Mass
____ of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity
Weight
_____Point at which gravity is said to act on an object
center of gravity
___is the sum of the centres of gravity of all of the body segments combined
CoG center of gravity
In anatomical position, CoG is at approximately ___ of individual’s height
55%
For adults CoG located approximately anterior to ___
S2
In infants, CoG located around __
T7
COG is higher in men or women
men
____increases with some pathological conditions (stroke, CNS nerve lesions, etc.)
Sway
____ , ___ ,____ and stability of external environment all affect postural sway
Pregnancy, obesity, injury
Three Factors that Affect Stability
Size and Shape of Base of Support, Height of CoG, Relationship of Line of Gravity (LoG) to BoS
In order to maintain balance, one’s CoG must remain over their _____
base of support
_____ increases stability
Lowering CoG
_____ refers to a straight line extending from CoG inferiorly
line of gravity
The closer the Line of gravity is to the centre of the _____, the more stable you will be
base of support
