A Biomechanical Analysis of Jogging vs. Sprinting in Advanced and Beginner Subjects

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  • Topic: Ground reaction force, Reaction, Force
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  • Published : January 14, 2013
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A Biomechanical of Analysis of Jogging vs. Sprinting in Advanced and Beginner Subjects File Names used for Analysis CRJogSprintAJ CRJogSprintAS CRJogSprintBJ CRJogSprintBS Smoothing Factor of 5 By: Michael Alexander Racquel Dela Cruz Julla Edralin Christine Joy Rimando Rebecca Simon KIN 485 - Biomechanics Professor Schleihauf I. Introduction

In the sports domain, biomechanics play a very important role. Athletes are constantly looking for ways to improve performance and to have an advantage over an opponent. At the elite level, technique and proper execution is often the deciding factor in a win or loss. However, in some particular cases, having the “proper form” is irrelevant and numerous solutions can bring about successful execution of the desired movements (Schleihauf, 2004). For instance, there could be multiple techniques a quarterback could use to throw a football. Some quarterbacks throw side armed, some overhand. Although a quarterback coach may insist that there are certain mechanics a quarterback should have when throwing the football, there are some that make it without the ideal form. A prime example is Bret Farve; who consistently does things that are not considered to be proper quarterback mechanics. On the other hand, there are some activities where proper mechanics for a movement are essential. In these cases, the range for effective movement solutions is very small. An example of this would be a track start in the 100 meter sprint. Sprinters have a particular set of movements that they go through before the start of a race. A good or bad start out the blocks can determine the outcome of a race. Additionally, one might argue that competitive running does require a certain amount of technique and running is not purely determined by physiological attributes. To examine this further, a biomechanical analysis was conducted using an experienced runner and a novice runner. The purpose of this experiment was to see if there were significant differences in the runners’ movements that actually impact performance. Running at a high performance level requires skillful and proper timing when all of the body’s joints and extremities move with purpose and function (Saunders, Pyne, Telford, & Hawley, 2004). This in turn can be viewed as running economy. Running economy (RE) is defined as the energy demand for a given velocity of submaximal running (Saunders, Pyne, Telford, & Hawley, 2004). Research has shown that individuals with better RE will use less energy than an individual with a poor RE. It is hypothesized that the experienced runner will have better RE than the novice performer. From a biomechanical analysis RE can be assessed by several variables. These include oscilation of the body’s centre mass, knee angles during the swing phase, excessive/ non-excessive arm movement, ground reaction forces, and stride length. As stated, the experienced runner should display superiority in the independent variables; thereby reducing the effort needed to maintain the predetermined speeds for jogging and sprinting. II. Results and Discussion

Stride Length
Stride length is an important factor when evaluating the biomechanical analysis for the jog versus sprint movements. Stride length is defined as the distance between points of first contact of the same foot. In relation to the jog versus sprint movement study, the measurements for stride length includes the horizontal distance locations from the right toe during the first support phase and the right toe during the second support phase. Step Length is another factor that comes into play as it measures the distance between the first contact point of one foot and the opposite foot. For normal or symmetrical gait, it is important for step length distances of the right foot and left foot step lengths to be similar measurements. The measurement for step length is related to the stride length measurement. In order to find...
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