RESULTS	The increase of satisfactory percentage of sexual arousal in the four groups ( placebo , 500 g , 700 g and 900 g ) was 22.63 % , 36.67 % , 34.01 % , and 44.29 % , respectively ( P < 0.05 ) , and the increase was statistically higher in the 900 g group than in the placebo group ( P < 0.0167 ) .\