Today I did a 60 minute threshold test on my trainer. I used a tt bike in the aero position. I used a new cyclocomputer so I can't verify the complete accuracy of the mph. I set the wheel circumference as recommended. However, it's the heartrate that I'm wondering about. The numbers seem very low to me.
After a 15 minute warm up
0-30 minutes HR= 129
30-45 minutes HR= 136
45-60 minutes HR= 147
The speeds (again just for reference) the 1st 30 minutes I averaged around 29 mph. The 30-45 minute range about 30 mph and the final 15 minutes 32 mph. I finished wiht 30.26 miles in 60 minutes. My legs were fried. Judging by the HR I'm wondering if I would have been better off in a smaller gear early on? Maybe this indicates I have to improve on my muscular endurance to match my cardioresp. system. IDK, maybe it doesn't mean anything at all...lol. FWIW, I just came off a 8 week block of tri training and I feel I really built up my endurance with the added running and swimming. Now I'm trying to build my cycling back up for a late season surge. Any thoughts on interpreting the limited data from my test? Thanks for the help.