| Groups | 
        Parameters | 
        Control    group | 
        Diabetic    group | 
        Diabetic    group with nifedipine   | 
       
      
        | Systolic blood pressure“mmHg”  | 
        113.25±
          16.957  | 
          134.00±
          19.973 | 
        120.50±
          14.225  | 
       
      
        | t. test  | 
          | 
        -3.542 | 
        3.857 | 
       
      
        | P. Value  | 
          | 
        P    <0.05 | 
        P    <0.05 | 
       
      
        | Diastolic blood pressure “mmHg” | 
        73.250±
          11.035  | 
         87.000±    12.182 | 
        77.750±
          9.662  | 
       
      
        | t. test  | 
          | 
        - 3.741 | 
        5.663 | 
       
      
        | P. Value  | 
          | 
        P    <0.05 | 
        P    <0.05 | 
       
      
        | Heart rate (beat/minute): | 
        77.700±
          11.466  | 
        79.600±     11.268 | 
        86.750±     8.302 | 
       
      
        | t. test  | 
          | 
        -    .529 | 
        -    4.530 | 
       
      
        | P. Value  | 
          | 
        P    >   0.600 | 
        P    <   0.05 | 
       
      |