The parameters in the VLPs group (+) were significantly different from those in the VLPs group (-): HFQRS and LAHF were higher (110.35 ± 16.45 and 41.08 ± 5.38ms) compared with (81.03ms) ± 9.49 and 29.71 ± 7.57ms); while RMS40 = 16.81 ± 3.96mcV was smaller than 29.26 ± 10.96mcV in VLPs group (-) (p<0.05).