Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #3
Laboratory 2 Introduction to Musculoskeletal Simulation (OpenSim)
Problem 1:
A. Degrees of Freedom:
1) There are 14 degrees of freedom; hip flexion, hip adduction, hip rotation, knee
angle, ankle

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #8
Pre-Lab 8:
1. We could use a kinematic analysis in lab to compare knee joint kinematics of walking
over-ground vs. walking on the surface of a treadmill. This would be an inquiry to see
how the fl

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #7
Pre-Lab 7:
1.
2. In this lab, we will begin by opening the Jframe computer program and look at the 12
frames of a jumping sequence. We will then calculate reference values and convert the
computer

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #6
Pre-Lab 6:
1. The modulus of elasticity is a material property, that describes an objects stiffness.
Mechanical deformation puts energy into a material. The energy is stored elastically or
dissipa

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #5
Pre-Lab 5:
1.
The torque created by the muscles about the ankle joint is _.
2. For this lab we will begin by positioning the subject with their dominant arm being tested
on the Biodex software. Fo

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #4
Pre-Lab 4:
1.
The torque created by the ankle weight about the knee joint is _.
2. For this lab we will begin by placing two passive surface electrodes on the gluteus
medius muscle, and a common g

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #3
Pre-Lab 3:
1.
The center of gravity for the barbell is_
2. Figure 1:
Figure 2:
Figure 3:
3.
In Phase one we will be first measuring the weight of the reaction board to determine
Fboard . We will t

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #2
Pre-Lab 2: Introduction to Musculoskeletal Simulation (OpenSim)
1. The gait cycle (walking cycle) extends from heel strike to heel strike of one leg and
includes the stance and swing phases of bot

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #7
Laboratory 7 Two-Dimensional Kinematics
-PART 1-
Problem 1:
Sample Calculation for Knee Flexion Angle:
Problem 2:
We found that the quickest angular velocity occurs between Frame #5 and #6. Using

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #6
Laboratory 6 Deformable Body Mechanics: Theraband
Problem 1:
A)
Sample Calculation for Stiffness:
B) Calculations for Modulus of Elasticity:
Red 6
Red 12
Red 18
C) The effects of the initial ba

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #5
Laboratory 5 Muscle Strength Testing
Problem 1:
Problem 2:
Problem 3: SEE ATTACHED GRAPH (Figure #1)
Flextion Angle
()
FB (Predicted)
Moment Arm
r
15
30
45
60
75
90
105
7447 N
2573 N
1511.4 N
1650

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #4
Laboratory 4 Electromyography (EMG)
Problem 1:
Problem 2:
Problem 3:
Problem 4: Our percent force and percent EMG levels were somewhat expected since our
contralateral force was larger than the no

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #3
Laboratory 3 Center of Mass
Problem 1:
Problem 2:
Problem 3:
Problem 4:
Problem 5: The subjects center of mass (COM) is located in the upper portion of their body,
closer to the scale end of the b

Alaina Hahn
Lab Section: Tuesday, 10-11:50am
Assignment #1
Laboratory 1 - Friction
Part 1 Problem 1:
Problem 2:
Dr
y Condition
Wet Condition
Soapy Condition
*Mean and Standard Deviation (SD) calculated using MS Excel.
Sample Calculation of s:
Problem 3: T