Wrong lap / interval start time in ZA Workout 1 (8 min free ride)

Zwift Academy
1

Hi Shiju

I really “enjoyed” pushing myself to the limit in the first ZA workout.

I really let rip in the second half of the 8 minute free ride and as I reached the end of the world of pain I could see that my average was 303W (for the part where I could actually see anything my sight was going. This meant I was close on 111% of my FTP.

Imagine my frustration when I see that Zwift started and ended the interval a minute before - so the interval data shows 283W average. 102% of my FTP.

Why did it start the interval in the analysis start at a different time to the actual start of the interval?

2

where do you look to see the data?

The lap markers seem fine in Golden Cheetah.

1 Like
3

Hi Gerrie
The analyses in both Today’s Plan and Strava show the interval starting early. I wish I could include the screenshots I have but this post won’t allow media uploads.

4

That seem strange. My interval 17 (the fun 8 min) seem to line up.

image

Are you looking at the data from Zwift or did you record power with a different device line a garmin?

2 Likes
5

The data came straight from Zwift and went into Today’s Plan. I did not use any other device.

In fact - it looks like all the intervals are curtailed / started a minute early, thought the session.

6

What device are you using for Zwift and how do you connect.

7

MacBook and the App on both the MacBook and Zwift companion on iPhone. Everything is Ant+ tacx Flux, Garmin HRM and a Garmin cadence meter.

8

Experienced something similar where my power numbers achieved dont match up to the intervals as expected on this mornings workout #1. Looks like they are offset with best example 5 min cool down has higher watts than 8 min effort. Did an ios update before I started too.

9

I have posted this issue in the bugs and fixes section of this forum in the hope that someone realises that this is a proper issue.

You’re absolutely right… I am looking at the 10 second intervals and the power readings are completely inaccurate.

10

How did you manage to post a screenshot in your post… it wont let me do it. It’s the only way I can show the problem clearly

11

I just attached the picture or copy and paste.

1 Like
12

It still won’t let me embed a media file in a post

13

Any news on this topic? I can also see that Strava and Today’s plan are way off target. Trainingpeaks however works fine and shows the right lap wattage.