Table 1. Changes of COD deficit, YYIRT, CMJ, shooting, passing, and dribbling over time among CON and BG groups.
CONq1q2 (n
= 12)
CONq1q2 (n
= 12)
CONq3q4 (n
= 9)
CONq3q4 (n
= 9)
BGq1q2 (n
= 11)
BGq1q2 (n
= 11)
BGq3q4 (n
= 9)
BGq3q4 (n
= 9)
Baseline
6-month
Baseline
6-month
Baseline
6-month
Baseline
6-month
COD
deficit (s)
0.65 ±
0.19
0.54 ±
0.12
0.67 ±
0.08
0.65 ±
0.6
0.66 ±
0.14
0.55 ±
0.06
0.63 ±
0.15
0.54 ±
0.09
YYIRT
(m)
448.3 ±
100.3
548.3 ±
93.2
442.2 ±
95.6
448.9 ±
89.5
443.6 ±
88.0
541.8 ±
74.0
444.4 ±
35.7
542.2 ±
40.6
CMJ
(cm)
27.7 ±
2.7
30.6 ±
1.5
27.2 ±
2.0
28.1 ±
1.8
27.5 ±
2.8
30.7 ±
2.4
27.3 ±
1.5
30.0 ±
1.3
Shooting
(n)
26.5 ±
1.6
29.7 ±
1.6
26.3 ±
1.9
27.0 ±
2.1
27.1 ±
2.0
30.3 ±
2.0
27.1 ±
2.3
30.4 ±
2.0
Passing
(n)
91.3 ±
1.7
94.6 ±
1.8
90.8 ±
2.5
91.2 ±
3.1
91.1 ±
2.2
94.5 ±
2.4
90.6 ±
2.0
94.0 ±
2.0
Dribbling
(n)
15.8 ±
0.4
15.2 ±
0.3
15.8 ±
15.7
15.8 ±
0.3
15.8 ±
0.4
15.2 ±
0.3
15.8 ±
0.4
15.2 ±
0.4
COD: change-of-direction; YYIRT: Yo-Yo intermittent recovery test; CMJ: countermovement jump; CON: control; BG: birthdate grouping; q1q2: birthdate between January and June; q3q4: birthdate between July and December.