Anthony Siokos (5835) Unit Assessment - Task 2 Poster Presentation (15%) Understanding Motion and Human Movement (SC222) Raul Landeo Due: Week 12, 7/5/08
Introduction The skill, exercise, movement task or sporting skill chosen for analysis is a kicking motion frequently used in the sport of football (soccer). In order to understand the biomechanics of this movement a number of points have been highlighted which include the muscles used in the movement, the range of motion, internal and external environment, and level of ability of the
Kick 1: Standing kick
subject used for this analysis. Quantitative data has been produced using the computer analysis protocol, Swinger. A qualitative assessment has been briefly touched upon in order to produce a complete analysis of the subject and the type of movement. Adjacent/below are a series of graphs displaying the results compiled and calculated.
Methods
Kick 2: Running kick
Discussion
Results
On Tuesday, 18 March 2008, digital video recording of a youth
“Biomechanics can be defined as the science that examines
Joint Trajectory
football player was undertaken in order to compare and analyse
kicking foot firmly planted on the ground and the kicking foot swinging back to then come forward and strike the ball using the in-step of the foot. The second, a running kick where the subject was asked to strike the ball after running toward it, using the same simple
350 Vertical Displacement
two kicking movements. The first, a standing kick with the non-
internal and external forces acting on the human body and the effects produced by these forces” (Sewell, Watkins & Griffin, 2005,
300
Run Hip
p.191). In football, there are a number of different kicking
250
Run Knee
200
Run Ankle
movements which produce force to propel the ball forward, in this
150
Stand Hip
case a standing kick and running kick have been analysed.
100
Stand Knee
50
Stand Ankle
Table 1 (Howe & Hanchard, 2003, p.18).
0 0
technique of planting the non-kicking foot firmly on the ground and
The movement can be divided into four phases as shown in
100
200
300
400
500
Horizontal Displacement
using the in-step to connect with the ball propelling it forward.
Movement (in one plane)
Action
Phase 1
Priming the thigh and leg during backswing Rotation of the thigh and leg laterally and flexion of the hip Deceleration of the thigh and acceleration of the leg The follow through
All data was collected with the use of the local football field, a Figure 1. Joint Trajectory comparison between “Standing” & “Running” kicks.
Phase 2
Joint Velocity
Phase 3
number of footballs, digital video camera and the subject conducting the movement. The subject’s name is Michael Kenyon, aged 14 with only two-years experience playing football
to Swinger where the shoulder, hip, knee and ankle movements were plotted producing quantitative data for assessment. From this data Figure 1 and Figure 2 adjacent have been produced to analyse the movement in more detail.
Velocity
i.e. he has a limited level of technique and skill. Post collection of subject data, two video files were uploaded
Phase 4
140 120
Run Hip
100 80
Run Knee
60 40
Stand Hip
20
Stand Ankle
Run Ankle Stand Knee
whether there was a significant difference between the two kicks.
Reference List
0 1
7 13 19 25 31 37 43 49 55 61 67 73 79 85 91 97 Frames
The focal point of analysis for this comparison is the hip, knee and ankle movements. The objective was to measure
Table 1. Action phases of kicking a ball.
Howe, T., & Hanchard, N. (2003). Functional anatomy. In T. Reilly, & A.M. Williams, A.M. (Eds.), (2003). Science and soccer (2nd ed.) (pp. 9-20). Abingdon, Oxon: Routledge.
Figure 2. Joint Velocity comparison between “Standing” & “Running” kicks.
Sewell, D., Watkins, P., & Griffin, M. (2005). Sport and exercise science: An introduction. London: Hodder Arnold.