Table 3 Perceived side effects based on questionnaires completed immediately after the testing session and the following morning
Variable | AA group – placebo | AA group – caffeine | AC/CC group – placebo | AC/CC group – caffeine |
|---|---|---|---|---|
Immediately after testing session | ||||
Muscle soreness | 46% | 23% | 0% | 0% |
Increased urine production | 0% | 23% | 0% | 11% |
Tachycardia and heart palpitations | 8% | 8% | 0% | 0% |
Increased anxiety | 0% | 23% | 0% | 0% |
Headache | 8% | 8% | 11% | 11% |
Abdominal/gut discomfort | 0% | 0% | 0% | 0% |
Increased vigor/activeness | 23% | 62% | 0%a | 67%a |
Perception of improved performance | 15% | 62% | 11%a | 100%a |
The following morning | ||||
Muscle soreness | 23% | 8% | 0% | 22% |
Increased urine production | 8% | 0% | 0% | 11% |
Tachycardia and heart palpitations | 0% | 0% | 0% | 0% |
Increased anxiety | 0% | 0% | 0% | 0% |
Headache | 8% | 8% | 22% | 0% |
Abdominal/gut discomfort | 0% | 0% | 0% | 0% |
Insomnia | 8% | 0% | 0% | 11% |
Increased vigor/activeness | 0% | 0% | 0% | 33% |