Well done to everyone on the great interaction on the thread
Bob, well done on the 5k 'why am I not surprised at the new PB' your a legend man a real legend. ..... don't worry about the typos if you have an uncertainty drop me a line. Just to re-iterate on the paces they are max of that 'intensity' within the band you are working in (at present)
Anne we are on the same sessions
Looking at your results the HR climb from one interval to the next is not surprising (tho your 'rest' may be to short) and the heat will 'always' generally give you an increased HR as the body is trying to pump blood close to the skin to assist with cooling.
Carla I think there are a number of factors that affect 'rest' duration but I think being reasonably consistent is important. I think a key is that the 'rest' means there is adequate recovery (not total) that will allow intensity to be maintained over the session. If your 2nd, 3rd or 4th interval etc are getting slower or you are having to work that much harder (HR shows this or perceived exertion tells this if your in touch) to keep to your target pace then your 'rest' is to short. [note you could keep 'rest' duration the same but reduce target pace, so address the problem from another direction.] Note I keep my rests a little shorter as it cuts down my total training time
OK so for me tonight my session was the same as Anne's 3 x 13UT1 / 3min rest:-
1/ 3444m / 1:53.2 / 23spm / aHR142 - rowed negative splits
2/ 3502m / 1:51.3 / 23spm / aHR151 - alternated approx 1:50's and 1:53's
3/ 3452m / 1:52.9 / 22spm / aHR149 - fairly even pace, cruised at a lower rate as I did not want the HR to be to high
Enjoyed the session I think because it backed up a good one yesterday, mixing up the way I did each interval added some fun
George