Here a set of data obtained from a study: there is

**16 participants**. Each participant had 3 successive lab visits. During each visit, they consume one drink : either the Drink 1, Drink 2 or Drink 3 (control). The order of drink administration is randomized, in the end

**they all tested the 3 drinks.**We took a

**physiological measure continually**30 min

**before**consumption (divided in

**8 time-points**) and 60 min

**after**consumption (divided in

**16 time-points)**. The physiological measure is the intervals between heart beats expressed in milliseconds.

I would like to

**compare my list of heart beats intervals [mms] between each product on the same time point.**

ie: is there a difference between the 3 drinks at the first time point after consumption ? After the second time point after consumption? etc.

I would like to compare all drinks: 1 with 2; 1 with 3; and 2 with 3.

Hope it is clear, do you have any suggestions of statistical analysis please?

If any, what are the test assumptions, and what do I do if my dataset doesn't fit assumptions?

Is is possible to include the baseline of each product (before consumption)?

Any comments are welcomed !!

Thanks a lot,

Dita