Uc sport studies poster daniel scroope
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CRICOS #00212K CRICOS #00212K Comparing elite and sub-elite AFL attacking 50m entrances Daniel Scroope (U3038907) National Institute of Sport Studies, Faculty of Health, University of Canberra and AFL NSW/ACT Talent Department [email protected] Background Australian rules football (AFL) is a sport the relies on the basic principle of out scoring the opposing team to win(1,2,4). Therefore, scoring more points than the opposing team is the most crucial factor within the game. To score points teams must get the ball into an attacking position. In AFL the best attacking positions are found in each teams forward 50m arc. Previous literature shows that the closer the ball gets to the goals the higher chance there is of scoring a goal (6point) (4). Previous literature has also shown that there is a gap between sub-elite and elite footballers skills and physical and mental capabilities(3). Is there a difference between sub-elite and elite attacking 50m entrances? The aim of the study is to identify if there is a difference between sub-elite and elite attacking 50m entrances. Further objectives are to determine if there is a difference between the amount of entries into the attacking 50m arc between elite and sub-elite teams. To determine the relationship between elite and sub- elite’s, area the ball enter, effectiveness of the ball entering, how the ball enters and the outcome that follows. . Methods Discussion Results Video Footage of 5 games (6teams) from the 2013 AFL u18's national championships were compared to 5 games (4teams) from the 2012 AFL finals campaign using lapsed-time coding by a single analyst. The variables coded were. • The Team who's attacking 50m arc the ball enters • The Outcome (goal, behind or no result) • >How the ball enters the attacking 50m arc (kick, run, handball, hit out and 50m penalty) • The area the ball enters the attacking 50m (Figure 1) • The player that first touches the ball (attacker, defender or midfielder) • The effectiveness of the ball entering the attacking 50m (Effective, marked by own player, free kick for or retain possession in more than 3m of space. Neutral, Retaining possession with less than 3m of space, boundary throw in or ball brought to ground after contest. Not effective, turnover, free kick against or opposition gain possession). Chi-squared (χ2)tests were used to establish a relationship between all variables. An intra- coder reliability analysis (using Kappa statistics) was performed to determine consistency among coding's. The intra-coder reliability found the Kappa = 1.0 showing a very strong statistical significance. A significance level of p<0.05 was used for all analyses. (1) Figure 1. AFL attacking 50m areas It was observed that elite footballers were able to enter the attacking 50m arc (505) more times than Sub-Elite footballers (385) (Figure 2) . There was no statistical significance (χ2(2, N = 890) = 1.144, p = .564) observed between sub-elite and elite footballers when comparing the outcomes. (Figure 3) There was no statistical significance (χ2(3, N = 890) =1.465, p = .690) observed between sub-elite and elite footballers when comparing the effectiveness of the entrance. (Figure 3) There was no statistical significance (χ2(4, N = 890) =2.948, p = .567) observed between sub-elite and elite footballers when comparing how the ball entered the attacking 50m areas. (Figure 3) There was no statistical significance (χ2(3, N = 890) =4.454, p = .216) observed between sub-elite and elite footballers when comparing the area that the ball enters the attacking 50m arc. (Figure 3) The results of this project show that as a whole, there isn’t any statistical difference between Elite and Sub- Elite entrances into the attacking 50m arc. This being the case that doesn’t mean there isn’t any differences between the two levels of football. The elite footballers were still able to conjure more forward entrances which allows them to score more points as shown in the results. The results also presented with the elite footballers having more effective disposals into the attacking 50m but also more ineffective disposals. This can be accounted for due to the better defence but also better attacking players and players delivering the ball. Interestingly the results show that the elite and sub-elite footballers are very similar in the areas which they kick to. But the elite footballers seem to favour section four. Weather this can be attributed to the fact that the Sydney Swans and Hawthorn Hawks were the main two teams which were analysed is unknown. But these two teams do have forwards which use their left foot as preferred therefore leading into area four would be their preferred area. Both sub-elite and elite levels used kicking as their usual way in which they would dispose of the ball into the attacking 50m. Research Question Due to the difference in skill level , physical capabilities and mental composure I hypothesise that the elite AFL players will be able to get the ball into the attacking 50m areas more often, and more often effectively, therefore scoring more points. 1. Brace, N. SPSS for psychologists: a guide to data analysis using SPSS for Windows (2nd ed.).2003 2. Clarke. S. When to Rush a ‘behind’ in Australian Rules Football: a dynamic programming approach. 1998 3. Davis, D + L. Getting into Australian Rules Football. 2006 4. O’Shaughnessy, D. Possession Versus Position: Strategic Evaluation. 2006 References Conclusion It has been observed that there isn’t any statistical difference between sub-elite and elite 50m entrances in AFL. This is contrary to the hypothesis in which it was thought that there would be a difference due to physical, mental and skill level differences between the two groups. Acknowledgements Thank you to the talent department of NSW/ACT AFL for providing me with the footage to analyse. Sub- Elite 385 Elite 505 Elite Sub- Elite Elite Sub- Elite Elite Sub- Elite Elite Sub- Elite Area 4 171 106 Area 3 118 92 Area 2 156 127 Area 1 61 59 Hitout 7 3 Handball 25 13 Run 41 34 Kick 432 334 Effective 146 109 Neutural 298 230 Not Effective 62 44 No Result 273 195 Behind 109 86 Goal 124 103 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Percentage Figure 3. Sub-Elite v Elite 50m entrance factors Figure 2. Number of entries Elite v Sub- Elite
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Transcript of Uc sport studies poster daniel scroope
CRICOS #00212KCRICOS #00212K
Comparing elite and sub-elite AFL attacking 50m entrances Daniel Scroope (U3038907)National Institute of Sport Studies, Faculty of Health, University of Canberra and AFL NSW/ACT Talent Department
Background
Australian rules football (AFL) is a sport the relies on the basic principle of out scoring the opposing team to win(1,2,4). Therefore, scoring more points than the opposing team is the most crucial factor within the game. To score points teams must get the ball into an attacking position. In AFL the best attacking positions are found in each teams forward 50m arc. Previous literature shows that the closer the ball gets to the goals the higher chance there is of scoring a goal (6point) (4). Previous literature has also shown that there is a gap between sub-elite and elite footballers skills and physical and mental capabilities(3).
Is there a difference between sub-elite and elite attacking 50m entrances?The aim of the study is to identify if there is a difference between sub-elite and elite attacking 50m entrances. Further objectives are to determine if there is a difference between the amount of entries into the attacking 50m arc between elite and sub-elite teams.To determine the relationship between elite and sub-elite’s, area the ball enter, effectiveness of the ball entering, how the ball enters and the outcome that follows. .
Methods DiscussionResults
Video Footage of 5 games (6teams) from the 2013 AFL u18's national championships were compared to 5 games (4teams) from the 2012 AFL finals campaign using lapsed-time coding by a single analyst. The variables coded were.• The Team who's attacking 50m arc the ball enters• The Outcome (goal, behind or no result)• >How the ball enters the attacking 50m arc (kick,
run, handball, hit out and 50m penalty)• The area the ball enters the attacking 50m (Figure 1)• The player that first touches the ball (attacker,
defender or midfielder)• The effectiveness of the ball entering the attacking
50m (Effective, marked by own player, free kick for or retain possession in more than 3m of space. Neutral, Retaining possession with less than 3m of space, boundary throw in or ball brought to ground after contest. Not effective, turnover, free kick against or opposition gain possession).
Chi-squared (χ2)tests were used to establish a relationship between all variables. An intra- coder reliability analysis (using Kappa statistics) was performed to determine consistency among coding's. The intra-coder reliability found the Kappa = 1.0 showing a very strong statistical significance. A significance level of p<0.05 was used for all analyses. (1)
Figure 1. AFL attacking 50m areas
It was observed that elite footballers were able to enter the attacking 50m arc (505) more times than Sub-Elite footballers (385) (Figure 2) . There was no statistical significance (χ2(2, N = 890) = 1.144, p = .564) observed between sub-elite and elite footballers when comparing the outcomes. (Figure 3)There was no statistical significance (χ2(3, N = 890) =1.465, p = .690) observed between sub-elite and elite footballers when comparing the effectiveness of the entrance. (Figure 3)There was no statistical significance (χ2(4, N = 890) =2.948, p = .567) observed between sub-elite and elite footballers when comparing how the ball entered the attacking 50m areas. (Figure 3) There was no statistical significance (χ2(3, N = 890) =4.454, p = .216) observed between sub-elite and elite footballers when comparing the area that the ball enters the attacking 50m arc. (Figure 3)
The results of this project show that as a whole, there isn’t any statistical difference between Elite and Sub-Elite entrances into the attacking 50m arc. This being the case that doesn’t mean there isn’t any differences between the two levels of football. The elite footballers were still able to conjure more forward entrances which allows them to score more points as shown in the results. The results also presented with the elite footballers having more effective disposals into the attacking 50m but also more ineffective disposals. This can be accounted for due to the better defence but also better attacking players and players delivering the ball. Interestingly the results show that the elite and sub-elite footballers are very similar in the areas which they kick to. But the elite footballers seem to favour section four. Weather this can be attributed to the fact that the Sydney Swans and Hawthorn Hawks were the main two teams which were analysed is unknown. But these two teams do have forwards which use their left foot as preferred therefore leading into area four would be their preferred area. Both sub-elite and elite levels used kicking as their usual way in which they would dispose of the ball into the attacking 50m.
Research Question
Due to the difference in skill level , physical capabilities and mental composure I hypothesise that the elite AFL players will be able to get the ball into the attacking 50m areas more often, and more often effectively, therefore scoring more points.
1. Brace, N. SPSS for psychologists: a guide to data analysis using SPSS for Windows (2nd ed.).20032. Clarke. S. When to Rush a ‘behind’ in Australian Rules Football: a dynamic programming approach. 19983. Davis, D + L. Getting into Australian Rules Football. 20064. O’Shaughnessy, D. Possession Versus Position: Strategic Evaluation. 2006
References
ConclusionIt has been observed that there isn’t any statistical difference between sub-elite and elite 50m entrances in AFL. This is contrary to the hypothesis in which it was thought that there would be a difference due to physical, mental and skill level differences between the two groups.
AcknowledgementsThank you to the talent department of NSW/ACT AFL for providing me with the footage to analyse.
Sub-Elite 385
Elite 505
EliteSub-Elite
EliteSub-Elite
EliteSub-Elite
EliteSub-Elite
Area 4 171 106
Area 3 118 92
Area 2 156 127
Area 1 61 59
Hitout 7 3
Handball 25 13
Run 41 34
Kick 432 334
Effective 146 109
Neutural 298 230
Not Effective 62 44
No Result 273 195
Behind 109 86
Goal 124 103
0%
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20%
30%
40%
50%
60%
70%
80%
90%
100%
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Figure 3. Sub-Elite v Elite 50m entrance factors
Figure 2. Number of entries Elite v Sub-Elite
