I do not find any references to reading DAISY/SISTA but for physionet see http://www.mathworks.com/matlabcentral/newsreader/view_thread/321388
It appears that the DaiSY .dat files can be load()'d, but you will need to read the description of the individual .dat file in order to see which columns are which data. For example see <ftp://ftp.esat.kuleuven.be/pub/SISTA/data/process_industry/destill.txt>