Table 2 Descriptive statistics for study variables and differences between means on supplement and placebo conditions.

N = 37		Mean (±SD)	Min – Max	p-value
General Vitality a		4.50 (1.19)	1.00 – 6.83
ReducedSense of Accomplishment b		2.49 (.73)	1.00 – 3.60
Emotional/Physical Exhaustion b		3.25 (.79)	1.20 – 4.80
Devaluation b		2.79 (.97)	1.00 – 4.60
N = 34
Current Vitality a	Supplement Placebo	4.21 (1.07) 3.99 (.83)	1.42 – 6.83 2.25 – 6.00	.22
Energetic c	Supplement Placebo	2.38 (.61) 2.31 (.59)	1.00 – 3.60 1.20 – 4.00	.42
Tiredness c	Supplement Placebo	2.27 (.71) 2.45 (.66)	1.00 – 3.7 0 1.20 – 4.00	.15
Tension c	Supplement Placebo	1.64 (.48) 1.62 (.44)	1.00 – 2.70 1.00 – 2.50	.72
Calmness c	Supplement Placebo	2.32 (.52) 2.44 (.54)	1.40 – 3.60 1.10 – 3.50	.19

Scores are on a scale of 1 to 7 for the General Vitality Scale and Current Feelings of Vitality Scale. Scores are on a scale of 1 to 5 for the Athlete Burnout Questionnaire. Scores are on a scale of 1 to 4 for the Activation-Deactivation Adjective Checklist.