Flow Path Twenty subjects in the experimental group were randomly assigned into three groups: SP (n=7), KLCIR (n=7) and KLC (n=6). Eight control subjects neither received any training nor was engaged in body-building on their own during the training period. Every subject was asked to fill in basic information, including age, body height, and body weight. Before the experiments, the flow path was explained to each subject who had already signed an informed-consent form.