Second stress test took shorter time. Normal??

I am a 33 year old Diabetic (Diagnosed 2 years ago)
9 months ago I did a stress test.  I was very breathless after the test but i did finish.
The goal was to get my heart rate up to 187 in which i did in a little over 12 minutes.
The results of my stress test was inconclusive so the doctor ordered a Cardiolite stress test.
I finally got to do my Cardiolite stress test last week. (9 months later)
I am still waiting for the results.
Again i finished the thread mill test and got my heart rate up to 187.
This time i found the stress test much physically easier. Probably because i have been doing much more exercise in the last year!
However, this time i got my heart rate to 187 a little over a minute sooner.
Does this indicate a potential problem because it didn't take me as long to get HR to 187.
Or is a minute or so in the difference no big deal.

Thanks.

[kenkeith]

The better the physical condition the longer to reach a higher heart rate with everything else being equal. There are different levels of exertion measured in METs with a tread mill exercise, and it is possible the increased level of exertion was quicker than the previous test.  There shouldn't be any concern as the exercise parameters would not be identical.

[NervousWreck75]

I was told by the nurse who assisted the stress test that the two test were the same.
The same speeds and incline intervals in each test.
If a healthy person did the exact same test multiple times would it be normal to reach the desired HR at different times, sometimes sooner than others?

[kenkeith]

Q: "I was told by the nurse who assisted the stress test that the two test were the same.
The same speeds and incline intervals in each test.
If a healthy person did the exact same test multiple times would it be normal to reach the desired HR at different times, sometimes sooner than others?"

>>>An individual's physicality is dynamic in regard to heart rate, blood pressure, etc. and there can be changes with other systemic factors that influence vital organs.  I would answer positvely to your question but not a large diverence.

[NervousWreck75]

Thank for your response but i am a little unsure what you meant by your last post.
Did you mean that it may be normal?

[kenkeith]

It would be abnormal to not have some differentiation of vital signs at any specific time with exertion or resting.