W32 - BSIPs

Question 1

What are BSIPs used for?

Answer 1

Calculate joint segment kinetics

Question 2

What are BSIPs? (stand for and what they are)

Answer 2

Body Segment Inertial Parameters

Segment mass, CoM location, Segment length, Moment of Inertia

Question 3

Define Moment of Inerita:

Answer 3

Ability of an object/segment to resist changes in angular velocity

Question 4

What is Newtons 2nd Law of Angular Motion in practice?

Answer 4

If hip flexors/hamstrings are working at max, decreasing length of leg increases angular acceleration

Question 5

What is the radius of gyration?

Answer 5

The distance in rotating system between the point of rotation and the point from which an energy transfer has the maximum effect

Question 6

How can you calculate the Moment of Inertia around the CoM

Answer 6

Using the radius of gyration and segment mass

Question 7

What is the Parallel Axis Theorem?

Answer 7

Moment of Inertia around an axis = Moment of Inertia around CoM + (distance x segment mass)^2

Question 8

Centre of Mass Position Equation:

Answer 8

XCoM = X0 + ratioCoM*(Xp-X0)

Question 9

Distance between two points Equation:

Answer 9

Pythagoras x CoMratio

Question 10

Moment of Inertia around CoM Equation:

Answer 10

ICoM = mp^2
m= Body Mass x Mratio
p = Length x Pratio

Question 11

Moment of Inertia of segment (e.g. foot):

Answer 11

Ia = ICoM + mx^2
m = mass of segment
x = length x CoMratio