Between groups , comparing with the time point T0 , the amplitude of variation of MAP , COR , and E at T2 in group C were significantly less ( P < 0.05 ) ; the amplitude of variation of HR , MAP , and COR at T3 in group C were less significantly , when compared with the time point T0 ( P < 0.05 ) ; the amplitude of variation of HR , MAP , COR , E , and Glu at T4 and T5 in group C were less significantly , when compared with the time point T0 ( P < 0.05 ) .