I'm not at all familiar with BME stuff, but that sounds rather nonspecific.
Unless this task is something which is routine and well-defined enough to be obvious to those familiar with the subject matter, it's probably best to start with specific questions.
A start might be to get the data imported. This would give you a table.
Ta = readtable('Fatigue_A.txt');
or maybe it would be more convenient to process things as a matrix?
Ta = readmatrix('Fatigue_A.txt');
