Emphasis on Volume or intensity?

[WindWarrior]

@Jose_Manuel

The results of this very recent study may be relevant for TR users now that we have the possibility of choosing polarized or masters plans with less emphasis on intensity: Critical power and W’ are correlated to volume not intensity.

Did you read this study? The conclusion was

“Therefore, the present study suggests that CP was more likely to be determined by mitochondrial content, rather than intrinsic mitochondrial respiration.”

Go look up Gollnick study from 1973. Here is the abstract:

On a limited budget (under 8 hours/week on average) I’ve proven to myself that:

• Intensity works (2016-2017)
• Volume works (2020-2023)

@Jose_Manuel

It’s difficult to understand that volume will make you faster rather than intensity even for high intensity events.

It’s not if you listen to and read from trusted sources.

One adaptive signal for increasing mitochondria is low-intensity muscle contractions. From the paper you referenced in the original post, their conclusion was that FTP/CP/MLSS/etc was more likely to be determined by mitochondrial content (the amount or number of mito) rather than mito respiration (ability to use oxygen).

You need both, but to use an analogy, it is better to build up a large number of engines than to make a smaller number more efficient.

@Jose_Manuel to clarify look at this post I made recently:

Weight training and FTP

Endurance gains in muscle are a result of increasing the number of mitochondria, and how well they can completely use and process oxygen+fuel. Think of mitochondria as “engines” Strength training involves increases in muscle size / cross-sectional area, neural muscular coordination, and maximal force production. Back on endurance, there are studies looking at adaptation froms three types of training: endurance rides or “long steady distance” (LSD) HIIT or high-intensity interval training SIT…