--- title: The Optimal Alpine Skiing Training Session description: Four keys to designing a training session like a controlled experiment to get the most valid data using Protern. --- [Skip to content](https://support.protern.io/how-to-build-the-optimal-training-session-with-protern#main-content) English Show submenu for translations [Contact us](https://support.protern.io/kb-tickets/new?hsLang=en) ![proternio-logo-dark-transbkg.png\]](https://support.protern.io/hs-fs/hubfs/proternio-logo-dark-transbkg.png?height=40&name=proternio-logo-dark-transbkg.png) Open main navigation Close main navigation - English Show submenu for translations - [Contact us](https://support.protern.io/kb-tickets/new) - Go to protern.io Go to protern.io Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Support Centre](https://support.protern.io/?hsLang=en) 2. [Getting started with Protern.io](https://support.protern.io/getting-started-with-protern-io?hsLang=en) 3. [Tips for Getting the Most Out of Protern.io](https://support.protern.io/getting-started-with-protern-io?hsLang=en#tips-for-getting-the-most-out-of-protern-io) # The Optimal Alpine Skiing Training Session ## Four keys to designing a training session like a controlled experiment to get the most valid data using Protern. ### ![Workflow - Level 1](https://support.protern.io/hs-fs/hubfs/Protern%20Academy/PA%20Badges/Workflow%20-%20Level%201.png?width=310&height=90&name=Workflow%20-%20Level%201.png) - [Record the control lap](https://support.protern.io/how-to-build-the-optimal-training-session-with-protern#Record-the-control) - [Choose what you want to measure ](https://support.protern.io/how-to-build-the-optimal-training-session-with-protern#Choose-the-measure) - [Give the Athlete feedback on what to change](https://support.protern.io/how-to-build-the-optimal-training-session-with-protern#Feedback) - [Let the Athlete try it at least three times](https://support.protern.io/how-to-build-the-optimal-training-session-with-protern#let-them-try-it) ![Athletes-engaged-2](https://support.protern.io/hs-fs/hubfs/Imported_Blog_Media/Athletes-engaged-2.jpg?width=637&height=478&name=Athletes-engaged-2.jpg) 1. ### Record the control lap  The control lap involves the athlete skiing the course to the best of their ability but without a specific technical or tactical focus. *Why is this important?* It gives you a baseline performance measurement that you can use as a comparison to the laps where the Athlete has made a change. 2. ### Choose what you want to measure The measurement is a combination of a metric and an environment.  The metric could be a variable like time, speed, or distance traveled.  The environment could be a specific section of a course, terrain feature, or sequence of gates. #### **For Example** “Today's session is about increasing the speed (metric) on the flats (environment).   3. ### Give the Athlete feedback on what to change Sometimes this change is referred to as an intervention.  An intervention is usually technical, tactical, or gear related.   #### **Tip** Test just one intervention at a time.   4. ### Let the Athlete try it at least three times Repetition will help ensure the data shows the true relationship between the change and what you want to measure rather than interference from another variable like the Athlete not understanding.    Comming Soon... 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