Quantitative Kinetic and Kinematic Analysis of Human Activity Essay

п»їPractical One: Quantitative Kinetic and Kinematic Analysis of Human Movement: The Inverse Remedy

Tacita Thorogood

Student amount: 12593352

Subject matter: SP2011 Progress Biomechanics

Lecturer: Sara Brice

Group: Even Week, Group 1


In the field of sports and exercise science the use of digitizing video footage can be used to track human being movement. Guns are placed upon anatomical landmarks of the body of a human to track motions which the body undergoes, this procedure is critical in the development of quantitative details of man movement. Embroidery involves offering these landmarked points, heads to in that case follow the items as the entire body moves in space and time. The body, its sectors and joints can be determined using this data, linear and slanted kinematics through its activity. Joint reaction forces and muscles torques during movement can be determined whenever using linear and angular kinematics combined with kinetic information. Clinicians within the sports and physical exercise industry are able to use this information along with normative data and analysis assessment to assess the efficiency of moves along with assist in technique development. This kinematic info can also be used in aid from the prevention of injury amongst athletes. Theory

Full kinematic description and accurate anthropometric measures Link-segment modelling in determining effect forces and muscle torques Involves inverse solution

Step 1 : (horizontal)

Step two: (vertical)

3: (rotation regarding centre of mass)

Kinematic variables are normally found using the digitizing video footage Kinetic variables happen to be measured using a type of power transducer By using a force dish scientists may measure the forces applied by the foot towards the ground, referred to as ground response forces The magnitude and directions of those forces apply to Newton's Third Law, equivalent and opposing reactions A force-time contour can indicate technique flaws


The aim of this experiment was to record and review a person's walking. In conjunction, with calculating the response forces and muscle torques across the individuals ankle, leg and hip during the high heel contact, mid-stand and toe-off of the gait cycle. Tools

you x Baslerв„ў High Speed Camcorders

1 back button tripod

Computer with Vicon Motusв„ў software program and manual

Amtiiв„ў Push Platform

Notebook computer with AccuPowerв„ў Software

Retro-reflective markers

Tape measure

Dimension callipers


First treatment Data Collection and Finalizing

When preparing the force program for info collection, a five second time span was created the test timeframe box. By selecting the ‘zero button' the force program was arranged. The pounds (N) from the participant was taken by located on the arranged force system and selecting ‘weight subject', recorded in table 1 . Using the subjects' right lower leg the following measurements were created table 1 .

Foot span

Foot breadth

Malleolus diameter

Malleolus level

Calf span

Calf circumference

Knee size

Thigh size

Mid-thigh area

ASIS breadth

Using the strapping measure the pursuing anatomical attractions were set up and retro-reflective markers were attached.

Back heel of Metatarsal II


Lateral Malleolus

Knee joint centre


Middle of the shank in line with the lateral Malleolus and knee joint indicators Middle of the upper leg in line with the knee joint marker as well as the greater trochanter The subjects' parameters had been selected in the Vicon Motus software plus the values in table 1 were came into. Heel contact, mid-stance and toe-off had been selected plus the 2D online video was exhibited on the display screen. The camera was adjusted using the display screen and camera lens to ensure a clear, direct and shiny image which include all retro-reflective markers when the participant was standing in the middle of the force program. The camera was zoomed in as much as possible and centered on the entire plate and subjects' body. While someone was standing in the middle of...