# AnalyticsZone

> Sports-science and health metrics for endurance athletes. Critical Power and W′, Critical Swim Speed, Critical Running Speed, training load (CTL/ATL/TSB), VO₂max, HRV and gait analysis — with core calculations on the device and clearly disclosed optional integrations.

## About

- Publisher: AnalyticsZone, part of onmedic (Barcelona, building eHealth since 2000).
- Author: Albert Arnó, MD, PhD — https://www.linkedin.com/in/alarno/
- Every metric page names the published model it implements and cites the primary paper. Reference ranges are stated with their source, not invented.
- Core calculations use on-device data. Optional integrations such as Run's Garmin sync transfer only disclosed data after explicit consent and provide withdrawal and deletion controls.

## Reference pages

- [bike/critical-power](https://analyticszone.app/en/bike/critical-power/): Critical Power and W′: the model, how to test it, and reference values by rider level
- [bike/ftp-vs-critical-power](https://analyticszone.app/en/bike/ftp-vs-critical-power/): When CP/W′ predicts race outcomes better than FTP alone (Skiba 2012 W′bal)
- [swim/css](https://analyticszone.app/en/swim/css/): Critical Swim Speed: derivation from a 400/200 test, with a calculator
- [swim/css-vs-threshold](https://analyticszone.app/en/swim/css-vs-threshold/): CSS versus threshold pace, and why they diverge (Wakayoshi 1992)
- [run/crs](https://analyticszone.app/en/run/crs/): Critical Running Speed: 3-minute and 20-minute test protocol, with a calculator
- [run/training-zones](https://analyticszone.app/en/run/training-zones/): Setting running zones 1-6 from Critical Running Speed
- [run/training-load](https://analyticszone.app/en/run/training-load/): rTSS, CTL, ATL and TSB explained for runners (Banister 1991)
- [walk/gait-analysis](https://analyticszone.app/en/walk/gait-analysis/): Walking gait metrics and what asymmetry values mean
- [health/metrics/mobility-gait](https://analyticszone.app/en/health/metrics/mobility-gait/): Walking asymmetry and steadiness, with clinical reference ranges by age (Menz 2003, Brach 2008)
- [health/metrics/heart-circulation](https://analyticszone.app/en/health/metrics/heart-circulation/): Heart rate, HRV, blood pressure and ECG metrics from Apple Health
- [sleep](https://analyticszone.app/en/sleep/): Sleep stages, HRV recovery and the workout-to-sleep correlation

## Apps

- [Run Analytics](https://analyticszone.app/en/run/)
- [Swim Analytics](https://analyticszone.app/en/swim/)
- [Bike Analytics](https://analyticszone.app/en/bike/)
- [Walk Analytics](https://analyticszone.app/en/walk/)
- [Health Analytics](https://analyticszone.app/en/health/)
- [Sleep Analytics](https://analyticszone.app/en/sleep/)
- [Swimtrainer Analytics](https://analyticszone.app/en/swimtrainer/)
- [Padel Analytics](https://analyticszone.app/en/padel/)
- [Paceva Analytics](https://analyticszone.app/en/paceva/)
- [Pacevatrainer Analytics](https://analyticszone.app/en/pacevatrainer/)

## Index

- [Sitemap](https://analyticszone.app/sitemap-index.xml)

## Languages

- Content is published in English, Spanish, French and Catalan, plus Russian for swimming and Korean for health, at /{lang}/{sport}/.