Mean (SD) and z scores calculated for athlete X with increasing numbers of observations
| No of observations | Mean (SD) | z Score | |||
|---|---|---|---|---|---|
| Baseline | Day 1 | Day 4 | Day 1 | Day 4 | |
| Mean (SD) data represent reaction times recorded in milliseconds. | |||||
| 5 | 247.6 (73.5) | 437.6 (259.0) | 190.8 (66.6) | 2.59 | −0.78 |
| 10 | 263.4 (111.6) | 362.6 (56.1) | 225.4 (17.6) | 0.90 | −0.34 |
| 20 | 240.5 (92.4) | 350.2 (81.8) | 233.5 (102.7) | 1.19 | −0.08 |
| 30 | 231.5 (78.0) | 363.9 (120.7) | 233.7 (64.1) | 1.66 | 0.03 |
| 50 | 237.7 (86.6) | 356.9 (75.6) | 237.1 (79.4) | 1.38 | −0.01 |
| 75 | 235.6 (73.6) | 361.9 (99.4) | 232.8 (66.2) | 1.72 | −0.04 |