ECG aplication with ADAS1000, SPI Problem

Hello everybody, I need some help. I'm trying to do a 32 bit SPI comunication with Arduino Mega, but I can't communicate with the IC, it looks like i have a desynchronization problem. I'm using the 32 bit like this SPI read write for 32bits data - Microcontrollers - Arduino Forum but it doesn't work.

ADAS1000 Datasheet: http://www.analog.com/static/imported-files/data_sheets/ADAS1000-3_1000-4.pdf