Table 3. Subjective feelings data of men and women before, during, and after 4 h of gaming.
| Variable | Caffeine | AmaTea® | Placebo |
|---|---|---|---|
| Attentive | |||
| Hour 0 | 62±20 | 60±24 | 62±21 |
| Hour 1 | 65±19 | 63±22 | 62±23 |
| Hour 2 | 64±22 | 62±23 | 60±22 |
| Hour 3 | 63±23 | 58±23 | 60±22 |
| Hour 4 | 66±21 | 56±23 | 57±23 |
| Energetic | |||
| Hour 0 | 57±21 | 61±25 | 59±24 |
| Hour 1 | 65±20 | 61±24 | 63±24 |
| Hour 2 | 60±24 | 62±22 | 58±25 |
| Hour 3 | 63±21 | 55±24 | 56±25 |
| Hour 4 | 60±23 | 54±24 | 54±24 |
| Motivated | |||
| Hour 0 | 62±21 | 62±22 | 61±24 |
| Hour 1 | 64±21 | 61±25 | 64±23 |
| Hour 2 | 63±20 | 62±21 | 59±22 |
| Hour 3 | 59±23 | 56±22 | 59±22 |
| Hour 4 | 61±21 | 53±23 | 55±24 |
| Irritable | |||
| Hour 0 | 19±18 | 22±22 | 20±21 |
| Hour 1 | 21±20 | 17±17 | 18±16 |
| Hour 2 | 18±18 | 18±23 | 21±17 |
| Hour 3 | 18±20 | 18±19 | 20±18 |
| Hour 4 | 19±16 | 24±21 | 18±18 |
| Focused | |||
| Hour 0 | 61±22 | 62±23 | 64±23 |
| Hour 1 | 66±23 | 64±24 | 66±24 |
| Hour 2 | 65±21 | 65±22 | 64±25 |
| Hour 3 | 63±25 | 56±25 | 58±24 |
| Hour 4 | 63±23 | 55±21 | 58±23 |
| Jittery | |||
| Hour 0 | 26±27 | 30±29 | 23±25* |
| Hour 1 | 35±28 | 30±30 | 24±28* |
| Hour 2 | 27±25 | 29±28 | 25±25* |
| Hour 3 | 30±28 | 23±23 | 25±25* |
| Hour 4 | 28±25 | 26±24 | 20±23* |
| Moody | |||
| Hour 0 | 13±14 | 18±20 | 16±20 |
| Hour 1 | 16±16 | 19±20 | 13±15 |
| Hour 2 | 15±20 | 15±18 | 15±17 |
| Hour 3 | 15±16 | 16±17 | 16±18 |
| Hour 4 | 20±21 | 20±22 | 19±21 |
Values are mean±SD.
*
Condition effect (P=0.05); Values lower for Placebo than for Caffeine (P=0.02). No other differences of statistical significance were noted (P>0.05).