Today a big PR in the 2.5 mile bike sprint (on gravel with hills) on the old heavy mtn bike. I inflated the tires to the rated max and I think that also helped. It was hard. Beat the previous by 16 sec.
2.5 mile bike sprint - Laurel Branch Trl
Time: 10:00
Avg HR: 166
Max HR: 174
HR stayed pretty much in the 160s the whole time. 30 sec after finishing, monitor showed a HR spike to 191, but I think that was anomaly ...but I don't know. That's why I didn't list it as max. After the finishing sprint I was at 173, then 20 sec later a gradual but steady 10 sec rise to 191 as I climbed a staircase, then drop to 161 after 30 sec more.
Making some headway on weight. Was 144 this morning, 3 lbs less than 2 days ago. Just one meal, a chicken breast and a little salad. Really hard to lose weight at this age. Takes some real sacrifice and calorie restriction. Tricks to curb the hunger. I've been drinking these low calorie flavored waters by Spindrift. Once or twice a day, a decaf cappuccino.
I feel for my brother. He has had a helluva time. He's never had dietary discipline. Feels bad everyday, overweight at 195, claims the Lyrica drug makes him eat too much, on many drugs.
Not me. Simon pure. No drugs.
But, Joe thinks I should be on drugs.
144.3 after workout.
What have I been doing?
Planting flowers of course.
A 2nd occurence of hr 191 would seem to make the first 191 during your ride as feasible. The 2nd was under a controlled and visible situation. No rapid body movement when walking up stairs to dislodge reading sensors. The rise was visible as was the reduction over 30 secs. However I would expect to see a spike to an unnaturally high level during peak effort during/at end of an interval. Not in a a hard sustained ride where one reaches a peak and holds it.
ReplyDeleteI updated with the HR graph showing the spike at the end. This is very similar to the pattern I've seen on the track, highest reading 30 sec after the last interval while walking
DeleteMaybe not an anomaly or equipment error. Just a reading of your absolute max hr. A big PR, pushing hard at the end, equals true hr max at the end of the ride or just afterwards. I am similar age and get max hrs in the mid 180s in similar situations. Max hr calculations based on variants of 220 less age or similar are notoriously inaccurate in older aerobically fit individuals.
ReplyDeleteAFIB
ReplyDeleteEither abnormal heart rhythm or equipment issue. A zio monitor would answer that question. A echo stress test would give additional information as well, like whether there is any abnormal motion of the chamber walls during contraction that reduces cardiac output requiring a compensatory increase in heart rhythm. Unlikely. From most to least likely equipment issue, heart rhythm issue (likely benign like PVC), heart functional issue (abnormal contraction or valve issues resulting in compensatory HR increase). The last would be unlikely but not unheard of.
ReplyDeleteHigh heart rate spikes are to be expected in an all out sustained sprint. Cardio system goes fully anaerobic leading to the absolute max hr being reached. Anaerobic system can only sustain this level for up to about 2 mins.Hr can continue to rise for up to 30 secs after a hard effort whilst the system continues to be catch up. Indicator of fitness is obviously how long it takes to reduce afterwards. I presume spikes at a lower steady state effort would actually be more of a warning signal.
ReplyDeleteI tested my steady state stability with a simple walk/bike session. Inclined treadmill or bike. Ramp up gradient or bike resistance every 2 mins at consistent speed. Do this for 15 mins. Watch heart rate creep up to about 120 or 130. Is it basically a steady upward movement.
ReplyDeleteIt is also common to see hr spikes at the beginning of a ride or run as the system adjusts to the extra demands.
ReplyDeleteI notice the AFIB diagnoser did not consider any of the above parameters before his statement of anomaly or equipment failure.
ReplyDeleteObviously no one is looking at or doesn’t know how to interpret the HR data in the graph (combined with his comments on what he was doing on the final rise)
ReplyDeleteActually he did. I’m sure he knew I was messing with him.
ReplyDeleteYou state an 'either or' without beginning with the the obvious starting point of the 3rd dimension of effort v heart rate.
ReplyDeleteI guess you have a scientific background but are not a true medical professional.
You do not have have a coaching background nor a long term competitive sporting history.
Actually was on speed skating and bicycle racing teams. XC skate ski at elevation 50 to 60 times a year and MTB on expert trails during the summer. Spent 5 summers perusing a unique hobby of identifying forest service routes up to the absolute tops of mountains, often to fire lookouts, 5000 ft climbs on primitive roads up to 10000 feet.
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Gentlemen! Simmer down.
ReplyDelete