Quick background for context. Swimmer since I was 8, got into endurance, open water swimming in my 30’s (2K - 10K swims) and moved into triathlon in my 40’s. I ended my 2018 triathlon season in late July and went straight into mountain biking on the trails with no trainer rides. On September 29 I broke my rib in bad crash during a 100K MTB race here in Southern California. I spent week 1 in full recovery, week 2 started including long walks, week 3 back on the trainer doing easy TR workouts like Petit, and week 4 I started into my middle distance triathlon base plan.
I’ve noticed something very strange with my heart rate. It’s been around 15 beats higher across the scale with my normal resting heart rate of 38 now sitting around 52 and during threshold and VO2 workouts I’ve had to stop and back-pedal often just to bering my HR down as it begins to climb very quickly within each interval. In terms of heart rate, “easy” is now tempo and all the way up to where threshold is now VO2 and even anaerobic. Once my HR pins at max, I’m forced to stop pedaling to bring my HR down after which I get back into it. I do this over and over within every workout.
Question: Is a this normal heart rate response to having to recover from the broken rib or have I lost all my conditioning when I moved away from the trainer and completely onto the trails? If it’s a result of the broken rib recovery, should I back off of all hard training sessions and keep them very easy until I fully recover? How long should I expect my heart rate levels to be so elevated?
Thank you in advance for your feedback.