Objectives
- To define a number of anatomical movements and demonstrate these movements with appropriate illustrations using the Quintic software.
- Identify sport specific skills where the identified anatomical movements occur and determine the role these movements play in successful completion of the sport skill.
Methods
-
- Video footage was captured at 50 fps using a Panasonic 3CCD Camera of a subject performing anatomical movements. The videos were then exported into Quintic Biomechanics 9.03v17 software.
- The blend, shapes and still capture functions in Quintic were used to illustrate the various anatomical movements from the captured footage.
- Video footage was then captured of various sport skills and opened in the Quintic software where they were analysed in order to determine the specific joint movements that the skill was composed of.
Functions of the Quintic software used:
- Single Camera Function
- Still Image Capture
- Photo Sequence module
- Shape Tools
- Blend Function
- Play Speed Function
Results
Note: All movements being described assume the body begins from the anatomical position unless stated otherwise as described in the introduction.
1. Flexion
Flexion is a bending movement that results in the decrease of the angle in a joint by bringing bones closer together. It usually occurs in the sagittal plane. The table below represents some of the joints where flexion can occur and an example of that motion;
Flexion
|
Joint
|
Example
|
Shoulder
|
Raising your arms upwards and in front of the body. |
Elbow
|
Movement of the forearm to the shoulder by bending the elbow to decrease its angle |
Spine
|
Moving the chin towards the chest. |
Hip
|
Movement of the femur towards the pelvis / bringing knee into chest |
Knee
|
Moving the heel towards the buttocks. |
Figure 3 below demonstrates flexion of the wrist joint. Flexion of the wrist joint is an important movement in many sport skills especially racquet sports as it can provide stability and power to a performance. In the follow through phase of a basketball free-throw wrist flexion is evident. The purpose of this movement which is technically known as a wrist snap (demonstrated in Figure 4 below) is to generate enhanced spin on the ball which will in turn add lift to the trajectory (flight of the ball), this can increase release velocity of the ball and improve the overall performance making it an important aspect to the execution of a basketball free-throw.