The objective of this series of articles is to determine how we can model and predict the power drop that occurs during long efforts, lasting more than an hour. Until now, all research has focused on Critical Power models, which are valid for durations up to 40′-60′, but what happens during longer efforts?

How can you help?

• By participating in the study
• By sending us your data

Who can participate?

• Asphalt runners who, since June 2023, have completed or will complete within a year at least three of the following races: 5km, 10km, 15km, half marathon, and marathon.
• Athletes who have times under 3h30′ for a marathon and under 45′ for 10k in men, and under 4h for a marathon and under 50′ for 10k in women.

What do you have to do?

Just three steps.

1. Fill out the questionnaire (link)
2. Perform two tests, 1200m and 3600m (instructions)
3. Sync your device with us on Intervals.Icu (tutorial)

What do you gain?

• Helping scientific progress.
• Getting to know yourself better.
• An analysis of the pace at which you could run long races.

Informed consent

For any questions, write to us at modelovcrit@gmail.com