easy homework

Motion Capture

Frame Calibration and Wanding https://youtu.be/p6PDFelru6s

Full Body Static Dynamic https://youtu.be/v_eH8FlqIBw

Full Body Marker Set https://youtu.be/YKCUk8bClkI

Postural Sway Force Plate data

Base of Support Defined as the area within lines connecting the outer perimeter of the points of support.

COG and BOS (COP) • Stances where the Center Line of Gravity is close to edge of

Base of Support are less stable (and more easily mobile)

• Static stability and mobility are inversely related

COP vs COM

Objectives

Evaluate quiet standing Three stances and 2 conditions (flat shoes and high heels)

• Eyes open • Eyes closed • Tandem • One leg

Flat vs. High heels

Stabiligram

X - Medial Lateral (m)

Z -A nt er io r po

st er io r (m

)

Quiet standing flat shoes and high heels

Score Eyes open Eyes Closed Tandem 1 Leg

Flat 88 3.34 2.78 11.16 6.21

High Heels 82 6.99 6.61 7.63 11.80

Body Posture

Updates

• Ethics essay due October 10 (20%) • Force plate data homework due October 3 (10%)

Blackboard Force plate data

Files Quiet Standing (QS) • Eyes open and Eyes Closed • FP1 = Force plate 1; FP2 = Force plate 2 • COP = Center of Pressure in x,y, and z • For = Force in x, y and z

Task (homework due October 3rd, 10% of grade): 1. Graph sway (combine force plate data) 2. Analyze sway data– come up with some measures.

How are the data sets different?