Fig. 3 Comparison of the mean value of %MVC between the three groups during the simulation surgery. White bar: control group; dotted bar: SAS- group; grey bar: SAS＋ group; lt: left; rt: right. N.S.: not significant（ Mann-Whitney U test）.
Fig. 3 Comparison of the mean value of %MVC between the three groups during the simulation surgery. White bar: control group; dotted bar: SAS- group; grey bar: SAS＋ group; lt: left; rt: right. N.S.: not significant（ Mann-Whitney U test）.