Table 2.
Mean values ± SD for different collective positional variables and ball possession and corresponding difference comparisons between first and second half.
| Mean ± SD (n) | Differences observed for the first half compared with second | |||||
|---|---|---|---|---|---|---|
| First half | Second half | Difference in means (%) | Chances* | Qualitative assessment | Effect size | |
| Stretch index | 23.94 ± 22.70 (111) | 26.44 ± 25.96 (102) | 15.36; ± 25.97 | 34/65/1 | Possibly ↑ | 0.14; ± 0.23 |
| Speed of dispersion | 3.37 ± 3.32 (800) | 3.24 ± 2.93 (833) | −2.48; ± 6.08 | 0/100/0 | Most likely trivial | −0.03; ± 0.08 |
| Length | 7.27 ± 7.56 (370) | 7.55 ± 8.46 (357) | 2.12; ± 11.21 | 1/99/0 | Very likely trivial | 0.02; ± 0.12 |
| Width | 9.20 ± 9.10 (289) | 9.27 ± 9.52 (291) | 0.18; ± 12.57 | 1/98/1 | Very likely trivial | 0.00; ± 0.14 |
| Sectors | 22.05 ± 18.21 (119) | 24.37 ± 25.31 (110) | −3.27; ± 22.53 | 4/86/10 | Likely trivial | −0.03; ± 0.22 |
| Corridors | 37.10 ± 47.07 (73) | 29.96 ± 32.69 (90) | −0.68; ± 33.40 | 10/79/11 | Unclear | −0.01; ± 0.26 |
| Longitudinal speed of team center | 4.50 ± 5.03 (598) | 3.98 ± 3.96 (678) | −5.34; ± 7.71 | 0/99/1 | Very likely trivial | −0.06; ± 0.09 |
| Lateral speed of team center | 3.82 ± 3.84 (707) | 3.89 ± 3.96 (693) | 1.38; ± 7.67 | 0/100/0 | Most likely trivial | 0.02; ± 0.09 |
| Ball possession | 30.30 ± 32.30 (89) | 26.19 ± 25.91 (103) | −11.02; ± 22.82 | 2/72/27 | Possibly ↓ | −0.11; ± 0.24 |
*
Percentage chance of having substantially positive/trivial/substantially negative effect.
↑, Increase; ↓, decrease.