« That Which Is Measured Improves | Main | Five Fundamentals of Training »

12/06/2012

Comments

Feed You can follow this conversation by subscribing to the comment feed for this post.

Joe Friel

Paul--I think you're talking about Efficiency Factor rather than decoupling. And you're right, EF varies daily as both power and HR vary from day to day. That's because we're humans and not machines.

Matt P

Thanks for the article. As ever very informative & thought provoking but I have 2 questions. 1) I can get more logged workouts which fit into an hour then I can 2 hours, is 1/2 hour (rather than 1 hour) enough to observe decoupling? 2) As I base my thresholds for zones 1/2/3 on the results of the threshold for zone 5, can the same be said the other way round. Easiest to explain in an example. I currently have a LTHR of 164 & a FTP of 276, which means that I will set my HR & Power thresholds for zone 2 @ 129 & 155 respectively. If I retest using a 1/2 hr TT and find that my FTP has increased to 300 I would reset my zone 2 power to 169. Can the same be said if I observed an average power output of 169 whilst pedalling @ z2 HR, could I assume that my FTP had increased to 300. Hopefully this makes sense.

Joe Friel

Matt P--You asked:1) I can get more logged workouts which fit into an hour then I can 2 hours, is 1/2 hour (rather than 1 hour) enough to observe decoupling? 2) As I base my thresholds for zones 1/2/3 on the results of the threshold for zone 5, can the same be said the other way round. My answers: 1) It can be for someone who has low aerobic fitness. But the greater aerobic fitness the more time you can ride without decoupling. 2) No, you can't. You know only that your fitness has improved but you can't accurately predict FTP.

Matt P

Thanks for the reply, so can I assume that if I am only planning to race olympic distance, that the issue of decoupling will be less of a concern anyway?

Joe Friel

Matt P--You must still have good aerobic fitness. That doesn't change. The only issue is, how long must you be able to do such a workout to establish aerobic endurance.

Marc Van Genechten

Hi Joe,
What was the training during you Cycling Camp? It had a big impact on your EF. Your average EF went up by 6%.
Best regards
Marc

Joe Friel

Marc--Yes, you're right, it's always hard to separate the many variables in training and draw solid conclusions. It could very well be that the camp had a positive effect.

triprentice

joe, I'm just curious: your answered that AeT is about 30bpm below LTHR. So my running LTHR is at 174bpm hence I do my Z2 running (according to your books) at around 148 - 157 bpm. Even if I stay at the lower end of Z2 I'm still significantly above your recommended AeT heartrate... so should I do my base running in Z1? Thanks

Joe Friel

triprentice--The only way to know for sure is a lab test. Using low z2 will put you very close if not on it. I believe I was answering a question previously for a cyclist.

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been saved. Comments are moderated and will not appear until approved by the author. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Comments are moderated, and will not appear until the author has approved them.

Loading

December 2014

Sun Mon Tue Wed Thu Fri Sat
  1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31      

Subscribe via Email

Enter your email address:

Delivered by FeedBurner