performanceX

performanceX is a data field that collects several metrics, you can select 3 of them to be shown during your training. NOTE: Due to the nature of MOST of these metrics, the results are most reliable during aerobic pace! Some might not be suited for HIIT! This app is a standalone product and not related to anything else with the same name! Some metrics need some time until the results are reliable. The field shows "Wait" in that case. Aerobic Decoupling: Compares the Aerobic Efficiency of the first half of the training with the second half. Page (https://sporttracks.mobi/blog/what-is-aerobic-decoupling) gives a good overview. A value below 5% is good. How to use: Calculations starts after 10 minutes. To check your decoupling for the first hour, go to the graph (Connect), find the 70 min mark (60+10) and see the deviation between the 1st and the 2nd 30 minutes. Available after 20 minutes. Aerobic Efficiency: relation between speed and heart rate. Available after 10 minutes. HR-RS Deviation: Because there is a linear dependency between aerobic heart rate and speed, a baseline value is calculated and stored for future trainings during first use. Speed is now compared to the calculated (baseline) pace. The longer the value remains around 0% or higher, the better. With improving fitness, values should rise higher into the positive for a longer time before they drop. A HRRS Deviation Score is generated reflecting the deviation in relation to distance Reset the baseline (option "Calculate new HRRS baseline") at the beginning of your training period to reflect improvements over the upcoming weeks and months. Available after 12 minutes. HR Load: Measures the effort of your current training load using your heart rate data. Similar to hrTSS. Shown in percent. Cooper Test: Continuously performing a Cooper Test, measuring the longest distance you ran within 12 minutes in your training. Because of the nature of a Cooper Test the results only make sense in a high intensity (dedicated) training situation. The distance is connected to a VO2Max value shown in the overview. Note: this VO2Max can strongly differ from the estimated VO2Max if not performed high intensity! See (https://www.verywellfit.com/fitness-test-for-endurance-12-minute-run-3120264). Exactness is around 99%. VO2Max (estimated): Calculates the VO2Max based on your heart rate values and your training performance. Note that a calculated VO2Max is always an estimation, because the "real" VO2Max can only be determined in a sports lab. Available after 10 minutes. Running Economy: RE is the heart beats in relation to the distance. The value is based on (https://fellrnr.com/wiki/Running_Economy), i recommend reading it. Performance Index: Produces results that are SIMILAR to the Polar Running Index, thus making it comparable to other athletes. (https://www.trainingpeaks.com/blog/the-best-way-to-monitor-your-run-training-daily/) gives a good insight. Interpret the result: (https://www.polar.com/en/smart_coaching/features/running_index/interpretation_of_running_index) Available after 12 minutes. Entered heart rate values must be as exact as possible! If you know them, enter them. If not, the datafield can read them from your profile (if supported by your device!). Choose "...user profile" in the settings. IMPORTANT: Verify/adjust the HR after using the datafield the first time! Grade Adjustments for hilly terrain is optional, affecting speed and distance. This is always an APPROXIMATION and not 100% exact! It is often more useful to uncheck this option and compare your trainings from similar terrain. You can optionally use a Running Dynamics device to determine speed and distance information if GPS quality is poor.

Version 1.1.2: New device "Forerunner 955" Version 1.1.1: New devices Version 1.1.0: New behavior of "HRRS Deviation". Base value gets calculated between minute 6 and 30. Note that on reset or first use this value is always 0. Version 1.0.1: New device supported (ENDURO)