II. Talent identification: multidisciplinary

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Talent identification Growth and maturation Age
effects in soccer
Sporiš Goran, PhD. http//kif.hr/predmet/mki http
//www.science4performance.com/
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Multidusciplinary model
Performance related characteristics
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Talent identification
Selection
Development
Detection
Identification
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Sample and design
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Sample and design
-12 -13 -14 -15 -16
mixed-longitudinal 75 158 173 143 116
cross-sectionial 82 104 42 49 68
total number 157 262 215 192 184
total number of players tested 665 total
number of observations 1086
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Morphological
Physiological
Technical
SOCCER TALENT
Psychological
Sociological
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• Height and weight
• 10 skinfolds
• Breadth measurements
• Circumferences
• Skeletal maturation (TW2)
• Secundary sexual characteristics (Tanner stages)

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Morphological
Physiological
Technical
SOCCER TALENT
Psychological
Sociological
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• EUROFIT
• Aërobic endurance
• treadmill
• Anaërobic endurance and power
• Shuttle tempo
• Van de Walle test
• Speed (and agility)
• 30 m sprint
• 5x10 m Shuttle sprint
• Strength
• VTJ, CMJ
• Isokinetic en isometric (BIODEX)

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Morphological
Physiological
Technical
SOCCER TALENT
Psychological
Sociological
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• Slalom dribbling test
• Accuracy of shooting
• Accuracy of passing (lob)
• Juggling
• Competition level
• national, provincial, local
• Field position

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Morphological
Physiological
Technical
SOCCER TALENT
Psychological
Sociological
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• Sport Interpersonal Relationship Q
• (Wylleman et al., 2000)
• Task and Ego Oriëntation in Sport S
• (Duda, 1989)
• Intrinsic Motivation Inventory
• (McAuley et al., 1989)
• Self Description Q II
• (Marsh, 1990)
• Sources of Sport-Confidence Q
• (Vealey et al., 1998)

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• Perceptual skills and decision making

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I. Problem of maturation?

• Do soccer players grow earlier and faster?
• Soccer players early or late mature?
• Physical characteristics in relation to PHV?

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Morphological maturation PHV

1. Do soccer players grow earlier and faster?

average mature
late mature
early mature
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example Height
cm/year
age
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example Height
cm/year
mean age at peak velocity
age
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Height and weight
height
weight
APHV 13.8 years
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• Question 1
• Do soccer players grow earlier and faster than
  their peers?
• Answer 1
• earlier probably
• faster NO !

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• 2. Soccer players early or late mature?

CL12.0 jaar SL9.0 jaar Height143.1 cm
CL12.6 jaar SL13.5 jaar Height165.0 cm
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10.5 jaar
17.5 jaar
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National level
?
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Provincial level
?
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Local level
?
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• Question 2
• Soccer players early or late mature?
• Answer 2
• on average early mature

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3. Physical characteristics in relation to PHV?
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example Standing Broad Jump
cm/year
age
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example Standing Broad Jump
cm/year
mean age at peak velocity
age
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Explosive strength
SBJ
VTJ
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Speed
SHR
SSPRINT
30m SPRINT
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Aërobic and anaërobic endurance
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Flexibility
SAR
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3. Physical characteristics in relation to PHV?
Strength and Speed
Flexibility
Aërobic and anaërobic endurance
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II. Talent identification multidisciplinary
Selection
Development
Detection
Identification
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Aërobic endurance
Variable Age National Provincial Local Diference
ESHR (min) -12 7.9 0.9 8.0 0.7 7.2 1.3 n.s.
-13 8.6 1.5 8.1 1.6 7.7 1.4 NgtltG
-14 9.6 1.4 9.2 1.0 8.2 1.4 N,PgtltG
-15 10.7 1.2 9.5 1.4 8.7 1.6 NgtltPgtltG
-16 10.9 1.5 10.3 2.1 8.9 1.7 N,PgtltG
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Aërobic endurance VO2max
Variable Age National Provincial Local Diference
VO2max -12 55.9 7.0 60.2 4.8 53.9 5.8 PgtltG
(ml/kg/min) -13 57.0 4.6 57.2 6.8 53.1 4.6 N,PgtltG
-14 57.3 5.7 56.8 4.3 53.2 4.9 N,PgtltG
-15 59.5 4.9 56.5 4.0 53.4 6.3 N,PgtltG
-16 57.4 4.6 56.1 4.2 54.7 3.3 NgtltG
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Anaërobic endurance Shuttle Tempo
Variable Age National Provincial Local Diference
STEMPO -12 77.4 4.8 72.3 2.4 80.1 5.4 PgtltG
(sec) -13 75.1 4.4 76.0 5.7 78.0 4.6 NgtltG
-14 72.4 3.6 74.4 4.4 76.4 5.4 NgtltG
-15 70.1 4.0 73.0 6.0 74.8 6.0 NgtltG
-16 67.6 3.7 69.3 3.6 72.1 4.6 NgtltG
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Speed
Variable Age National Provincial Local Difference
30 m (sec) -12 4.5 0.2 4.5 0.3 4.8 0.3 N,PgtltG
-13 4.4 0.2 4.5 0.2 4.6 0.2 NgtltP,G
-14 4.3 0.2 4.3 0.2 4.6 0.3 N,PgtltG
-15 4.1 0.2 4.2 0.2 4.4 0.3 N,PgtltG
-16 3.9 0.2 4.0 0.2 4.1 0.2 NgtltG
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Speed
Variable Age National Provincial Local Difference
SSPRINT -12 14.5 0.5 15.0 0.8 15.5 0.9 NgtltG
5 x 10 m -13 14.5 0.8 15.3 0.8 15.1 0.6 NgtltP,G
(sec) -14 14.3 1.1 14.9 0.9 14.9 0.9 NgtltP,G
-15 13.9 0.7 14.6 1.0 14.4 1.0 NgtltG
-16 13.6 0.9 14.1 0.8 14.1 0.6 NgtltP
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Strength
Variable Age National Provincial Local Difference
VTJ (m) -12 32.4 4.5 34.1 5.3 30.0 5.0 ns
-13 33.7 4.8 32.9 5.1 30.6 4.4 NgtltG
-14 37.0 5.1 37.0 4.4 34.3 5.4 N,PgtltG
-15 40.4 4.7 40.0 5.3 35.7 5.7 N,PgtltG
-16 44.8 5.0 45.5 5.8 40.0 6.5 N,PgtltG
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Flexibility
Variable Age National Provincial Local Difference
SAR (cm) -12 19.3 5.4 17.6 5.3 19.0 5.5 n.s.
-13 19.1 6.1 18.3 6.7 18.6 5.0 n.s.
-14 20.4 6.1 18.0 6.9 18.1 6.2 n.s.
-15 21.9 7.3 17.3 8.3 17.3 6.3 NgtltP,G
-16 22.8 6.9 19.8 8.2 15.5 7.8 NgtltG
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Slalom dribble
Variable Age National Provincial Local Difference
Dribbling -12 19.2 1.6 19.0 1.4 20.8 2.1 NgtltG
(sec) -13 18.1 1.5 18.8 2.2 19.5 1.9 NgtltG
-14 17.4 1.6 17.8 1.1 19.3 2.4 N,PgtltG
-15 17.2 1.3 17.4 1.2 19.2 2.2 N,PgtltG
-16 16.5 1.3 17.4 0.8 17.5 1.1 N,PgtltG
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Anthropometry
Variable Age National Provincial Local Difference
Height (cm) -12 147.7 6.8 148.4 6.3 145.9 6.7 n.s.
-13 151.8 6.4 152.1 6.0 153.6 7.4 n.s.
-14 158.2 9.3 160.4 7.6 159.8 8.8 n.s.
-15 167.0 9.2 168.9 7.1 167.4 8.8 n.s.
-16 172.0 7.4 174.5 8.5 174.1 7.7 n.s.
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Example Duarte, age -16
P10 P25 P50 P75 P90
Height (cm) 161.3 167.0 173.1 177.7 182.2
Weight (kg) 47.7 52.9 57.7 64.7 70.9
Sum 5 skinfolds (mm) 17.5 26.1 31.2 39.6 47.7
Sit and Reach (cm) 10.0 15.9 20.5 26.0 31.0
10 x 5 m SHR (sec) 21.3 19.9 18.9 17.9 17.4
Endurance SHR (min) 6.5 8.0 9.5 11.0 12.0
Dribbling (sec) 19.2 18.0 16.9 15.9 15.4
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The effects of task constraints on visual search
behaviour and decision-making skill in youth
soccer players

• Roel Vaeyens, Matthieu Lenoir, Mark Williams,
• Liesbeth Mazyn Renaat Philippaerts
• (Journal of Sport and Exercise Psychology, 2005,
  submitted)

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Test tactical skills

• Universal
• film clips of simulated soccer actions
• lab projection on life-size screen
• Decision taking open offensive situations
• 2 vs 1
• 3 vs 1
• 3 vs 2
• 4 vs 3
• 5 vs 3

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Mean number fixations/sec per group and situation
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Mean fixation duration per group and situation
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Fixation location 3 vs 1
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Fixation location 5 vs 3
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II. Talent identification multidisciplinary
Selection
Development
Detection
Identification
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Selection of younger players in 1st team?The
Belgian caseEvaluation of the under-21 rule Do
young adult (U-21) soccer players benefit?

• Roel Vaeyens Renaat Philippaerts
• Ghent University
• Dept. Movement and Sports Sciences

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Methods

• Official match data from Royal Belgian Football
  Association
• 2e national (D2) 3e national A (D3)
• 4 seasons
• 1998-1999
• 1999-2000
• 2000-2001
• 2001-2002
• 53 teams 2138 players

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Team selections conform -21 rule ()
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Means ( SD) of number of selections and playing
minutes per player and per season (D2)
Season Season Season Season
Age group 98-99 99-00 00-01 01-02
Selections U21 13.6 10.5 12.5 10.4 13.0 10.9 12.8 11.0
21 23.1 9.6 22.6 10.5 22.7 9.3 23.1 9.5
Minutes U21 732.2 840.1 605.6 804.0 672.4 830.6 620.5 845.9
21 1637.4 942.2 1646.9 1019.2 1625.6 908.6 1669.0 923.0
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Conclusions

• Teams in conformity with the U-21 rule
• Rather large variation within and between teams
• No increase in playing opportunities for young
  adult players in 1st team
• Solutions
• change in mentality of trainers-coaches, clubs
• better youth education programme