I've been using 165 for bike LTHR based on tests where you try to hold increasing powers for a minute at a time.
For the run, I've been using 175 based on results from 5K races and lookup tables for paces based on those results.
For a sprint tri over the weekend I held a HR of 170 over the swim (avg was lower due to the time to ramp up to that pace) and 170 on the bike (going very hard but this was a sustainable pace for the distance), totalling about 55 min (swim + T1 + bike). For the run I averaged 167 HR.
Just curious about thoughts on how fatigue adds, and whether I need to revisit my run LTHR or whether this is somewhat normal? I figured I'd be able to at least hit my threshold HR for the 5K. I even beat previous run splits by ~30 sec, and the course was very hilly (both bike and run).
For the run, I've been using 175 based on results from 5K races and lookup tables for paces based on those results.
For a sprint tri over the weekend I held a HR of 170 over the swim (avg was lower due to the time to ramp up to that pace) and 170 on the bike (going very hard but this was a sustainable pace for the distance), totalling about 55 min (swim + T1 + bike). For the run I averaged 167 HR.
Just curious about thoughts on how fatigue adds, and whether I need to revisit my run LTHR or whether this is somewhat normal? I figured I'd be able to at least hit my threshold HR for the 5K. I even beat previous run splits by ~30 sec, and the course was very hilly (both bike and run).