Table 1

Response to performance questionnaire
Question
 Group
 T1
 T2
 T3
 AVG
My energy level is:
 Sup
 3.7 ± 0.7
 3.5 ± 0.7
 3.3 ± 0.6
 3.5 ± 0.5 *


PL
 3.2 ± 0.6
 3.2 ± 0.6
 2.8 ± 0.9
 3.1 ± 0.5
My fatigue level is:
 Sup
 2.3 ± 0.9
 2.8 ± 0.8
 3.1 ± 0.7
 2.7 ± 0.6


PL
 2.4 ± 0.7
 3.1 ± 0.5
 3.3 ± 0.9
 2.9 ± 0.5
My feeling of alertness is:
 Sup
 3.7 ± 0.7
 3.6 ± 0.5
 3.6 ± 0.7
 3.6 ± 0.4


PL
 3.3 ± 0.7
 3.4 ± 0.7
 3.1 ± 1.0
 3.3 ± 0.7
My feeling of focus for task is:
 Sup
 3.8 ± 0.7
 3.8 ± 0.6
 3.7 ± 0.7 *
 3.8 ± 0.5 *


PL
 3.3 ± 0.7
 3.5 ± 0.7
 3.0 ± 1.0
 3.3 ± 0.7

SUP = Supplement; PL = Placebo; * = significant difference between SUP and PL. All data are reported as Mean ± SD.

Hoffman et al. Journal of the International Society of Sports Nutrition 2009 6:2   doi:10.1186/1550-2783-6-2

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