Force Plate Analysis - Lab Report Example

Summary

The paper aims to investigate the effect of increasing running speed on ground reaction force related variables. The GRF is an important external force acting upon the human body in motion. This force is used as propulsion to initiate and control the movement. …

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Subject: Formal science & Physical science
Type: Lab Report
Level: Undergraduate
Pages: 4 (1000 words)
Downloads: 1
Author: abbigail75

Extract of sample "Force Plate Analysis"

Download file to see previous pages The Kistler Force Plates use triaxial piezoelectric force transducers mounted at the corners of each plate to measure the three components of the ground reaction force vector (vertical, anterior-posterior, and mediolateral) throughout the stance phase of gait. For comparing data between different subjects and/or sessions, the joint moments are normalized to body weight. The change in the horizontal velocity during the braking, propulsive and stance phase are calculated. In the results, the changes are summarized and the variables are presented in relation to the bodyweight of the individual rather than in Newton. The discussion includes the explanation of the general pattern of the Fz- and Fy- time traces the other change in the magnitude of the Ground Reaction Force (GRF) variables between each running speed.

According to Newton’s Law of Gravitation, any two objects with masses attract each other and the magnitude of this attracting force is proportional to the product of the masses and inversely proportional to the square of the distance. The gravitational force acted upon an object by the earth is called gravity or weight of the object. Since we always have contact with the ground due to this gravity there is always an interaction between our bodies and the ground. The reaction from the ground is called the Ground Reaction Force (GRF).
A single male weighing 74kg uninjured participant was subjected to an exercise to determine the ground reaction force. Following habituation, GRF was recorded while he was running across the Kistler Force Plate five times at 3, 4 and 5 m-s-1 10 %. Following each trial during the laboratory session, an MS-Excel spreadsheet containing Fz (i.e the vertical component of GRF) and the Fy (i.e. the anterior-posterior component of GRF) versus time data and the braking and propulsive impulse were produced. From this raw data, we will need to obtain the magnitude of the following GRF related variables (shown in fig. 1) for each trial. ...Download file to see next pagesRead More

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Force Plate Analysis - Lab Report Example

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