I have conducted a study with 20 participants.
During the study I measured 9 different plasma hormones at 5 different times before and after an intervention.
As an exploratory study I would like to compare the hormone levels before and after the intervention to see if they differ. Even though the same hormone has been measured 5 times, I expect the values to be different at each time point because of cyclic variation, but the 5 time points before and after the intervention are measured at the same time in the cycle and should therefore be comparable minus the possible intervention effect (if that makes sense).
If I conduct paired samples T-tests i will end up with 45 tests. Should I worry about multiple testing and do some kind of post-hoc adjustment (e.g. Bonferroni) or is there a better way to go about this?
Alternatively, is it enough to state that this is an exploratory study and that the results have to be confirmed in other well-powered studies?