Training Volume Clarification – TftNA

Hi all,

I’m sure this question has been addressed somewhere on the forum, but after an hour of hunting I can’t seem to find an answer.

Can I get clarification on the difference between “weekly aerobic training volume” and “total aerobic training volume”?

I am making a spreadsheet where I input the number of annual training hours, and it will give me a rough breakdown of aerobic workout durations based on the percentages outlined in the book. But… it’s not quite adding up correctly for the aerobic training volume.

For example, I want to hit about 300 hours/year (360 mins/week, based on 50 week training year) for aerobic training volume. In week 1 of the transition period I need to be at 50% of the weekly volume (180 mins).

The book example shows 3 aerobic workouts scheduled in Weeks 1-3 and specifies:
• One long zone 1 workout, 25% of weekly aerobic training volume
• One zone 2 session, no more than 10% of total aerobic training volume
• Make up the rest of the volume with easy aerobic exercise

Since weeks 1-3 of the transition period show only 3 aerobic workout sessions, weekly and total aerobic training volume are obviously not the same, because 25% + 10% leaves 65% of the aerobic volume to be completed in the 3rd workout. Yet, applying 10% to other aerobic volume numbers on my spreadsheet gives an illogical answer. I’m obviously missing something…

Thanks!