Biomechanics Essay

1433 Words Mar 27th, 2013 6 Pages
BIOMECHANICS MEASUREMENT REPORT 3

CALUM NICHOLL (201033796)

GROUND REACTION FORCE (GRF)

CONTERMOVEMENT AND SQUAT JUMP KINETICS

BIOMECHANICS LAB 3- CALUM NICHOLL

Introduction

Using a motion analysis system (Vicon Nexus System) the class were able to analyse the forces generated whilst the subject carried out counter movement and squat jumps. The T-Series cameras (6xT160, 6xT40) and the force plate that is dived into 4 sections were used to record the forces. The subject uses the stretch shortening cycle to gain height when jumping.

There are threes phases that make up the stretch shortening cycle (SSC), the concentric, amortization and eccentric
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Plyometric training does carry a high injury risk due to its explosive nature. For this reason athletes should firstly develop a base level of strength through a standard resistance programme. A thorough warm-up and cool down will also help to prevent injuries, as will a gradual development of the intensity of the exercises performed. Delayed onset muscle soreness (DOMS) is a common complaint after plyometric training. The eccentric muscle contractions that consist of jumping or any other plyometric exercise can result in DOMS. DOMS usually occurs 12-48 hours post-exercise. Muscle aching and tightness are the most common symptoms, often resulting in a decreased range of motion. Often the discomfort eases within 3 days post exercise and a full range of movement is restored.

Objectives

Using the force plate in the bio engineering lab, a comparison will be made between the a squat jump and a counter movement jump. Once the results have been generated and the data produced, calculating the maximum power generation, max height and optimum velocity differences between the jumps will be carried out. Also the acceleration, force, velocity and power will be compared graphically. A discussion with regards to the results will then be made, disusing how the stretch shortening cycle can help to increase vertical.

Methods

1. Shown how to set up cameras in the lab for our capture volume space. 2. The Vicon Nexus System was then calibrated,

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