Dear roycar
I can think of a couple of reasons for the difference as I have looked up your location.
I believe that you are from Ireland. It is possible that like Alophysio, the driver position on the right of the vehicle may have a bearing on your not getting the same results. Further, the shorter driving distances and lessor times of travel may account for some of the other variables.
The test has had similar results in Canada and USA. However, in our countries, people do more of what we call "windshield time" as distances are greater and driving is a necessary evil.
Second, the driver position is different even though the pedal position is the same. When I was in New Zealand for three weeks, I noticed a great difference in changed driving comfort for the left side driver position. This could have a bearing on the results obtained by yourself and Alophysio.
I cannot say if it is the amount of driving and/or the driver position which contributes to the common outcome of the test here, but I would think from the patient profiles that it is. Ergonomic factors also seem to be a factor.
Therefore, just do the test and see what results you obtain. Yours may be different, but they are important. I am most interested in what you did exactly find.
I thank you for giving it a try and hope that it will add some information base to your therapy.
Thanks again for your reply.
Best regards,
Neuromuscular.