SetPlayerSprintStyle(playerid, style);

SetPlayerSprintStyle(playerid, SPRINT_NORMAL); //Normal
SetPlayerSprintStyle(playerid, SPRINT_CIVIL); //Civil
SetPlayerSprintStyle(playerid, SPRINT_FAT); //Fat1
SetPlayerSprintStyle(playerid, SPRINT_FATOLD); //Fat 2
SetPlayerSprintStyle(playerid, SPRINT_GANGSTA); //Gangster
SetPlayerSprintStyle(playerid, SPRINT_WUZI); //blind
SetPlayerSprintStyle(playerid, SPRINT_PANIC); //Panic
SetPlayerSprintStyle(playerid, SPRINT_OLD); //old

#include <a_samp>
#include <seif_sprint>

public OnPlayerCommandText(playerid, cmdtext[])
{
    if (strcmp("/Runningstyles", cmdtext, true, 10) == 0)
    {
        ShowPlayerDialog(playerid,3,DIALOG_STYLE_LIST,"Choose your form of run","runNormal\nrunCivil\nrunfat 1\nrunfat 2\nrunGanster\nrunblind\nrunPanic\nrunold","accept","Cancel");
        return 1;
    }
    return 0;
}

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    if(dialogid == 3)
    {
        if(response)
        {
            switch(listitem)
            {
              case 0: {SetPlayerSprintStyle(playerid, SPRINT_NORMAL); SendClientMessage(playerid, -1, "Running selected the Normal style");}
              case 1: {SetPlayerSprintStyle(playerid, SPRINT_CIVIL); SendClientMessage(playerid, -1, "Running selected the Civil style");}
              case 2: {SetPlayerSprintStyle(playerid, SPRINT_FAT); SendClientMessage(playerid, -1, "Running selected the fat 1 style");}
              case 3: {SetPlayerSprintStyle(playerid, SPRINT_FATOLD); SendClientMessage(playerid, -1, "Running selected the fat 2 style");}
              case 4: {SetPlayerSprintStyle(playerid, SPRINT_GANGSTA); SendClientMessage(playerid, -1, "Running selected the Gangster style");}
              case 5: {SetPlayerSprintStyle(playerid, SPRINT_WUZI); SendClientMessage(playerid, -1, "Running selected the blind style");}
              case 6: {SetPlayerSprintStyle(playerid, SPRINT_PANIC); SendClientMessage(playerid, -1, "Running selected the Panic style ");}
              case 7: {SetPlayerSprintStyle(playerid, SPRINT_OLD); SendClientMessage(playerid, -1, "Running selected the old style ");}
            }
        }
    }
    return 1;
}

im gonna create include and add images and show how it functions.But will keep broken links...and earn respect and slaps. :P
Dont take this seriouS!