How to perform a ttest assuming all values together?

I have recorded the heart rate of 7 individuals walking up and down a stairs. I was wondering how I can carry out a ttest on matlab assuming the heart rate values of ALL together, to get one P value and one t value at the end.

Answer 1

[Thorsten]

You have to use anova1 if you have more than two samples.

[sam]

so is it simply, [p,tbl] = anova1(ECG_stairs), assuming ECG_stairs is the data

[Thorsten]

Yes, if each column contains the heart rates for an observer.