Rolling Start Check

ErgZone continuously monitors for rolling starts in intervals and includes an indicator (a small circle) on the interval numbers displayed, like the one shown in interval 2 in the screenshot below.

Workout Screen: Rolling Start indicator on Interval 2

What is a rolling start?

A rolling start occurs when an athlete is already in motion as the interval begins or when the flywheel is still accelerating from the rest period.

How can I use that information?

During a training session, knowing when an interval had a rolling start can be helpful to know if there was a build into that interval.

This information serves solely for reference purposes and does not alter any calculations performed by the app.

Competition Organizers

For competition organizers, you can now enforce a "No rolling start" for one or more intervals, and the ErgZone app will invalidate the score if a rolling start is detected like the on the image below.

Workout Result Screen: Rolling Start Indicator on Interval 2

Why is it relevant?

A rolling start can mean that the athlete has already reached a particular intensity level (pace/watts) at the interval's beginning, potentially leading to a considerably faster average pace (or watts) for that interval than it would be if the interval started from a dead start.

How does the check work?

ErgZone uses information the PM5 provides the app to decide if the interval had a rolling start.

Such information is not visible on the PM5 screen.

How to avoid a rolling start?

Stop working during rest at least 15 seconds before the beginning of the next interval.
Wait for the next round to start on the PM5. If your first stroke starts before that, it will be considered a rolling start.