How the report is built
This tool turns cycling activity data into a structured performance report using established training and power-analysis concepts.
What's measured
The analysis may include measures such as average and normalized power, variability, training load, power-duration performance, cadence, fatigue, aerobic decoupling, and pedaling metrics when supported by the uploaded file.
How the numbers are calculated
Calculations are performed deterministically from the ride data and the rider information provided. Recommendations are based on transparent rules that look for patterns within the ride, such as changes in power, cadence, pacing, or fatigue over time.
VO₂max, and what its band means
VO₂max is estimated from the best five minutes of riding in the last 90 days, across every ride you have saved, and your weight. It is one figure for the rider rather than one per ride, and deliberately so: the equation behind it is fitted to an all-out five-minute effort, and the best five minutes of an easy ride would report an easy rider. It is still an estimate from a bike, not a laboratory measurement from a mask and a treadmill, and it reads low if you have not gone deep inside those 90 days. The band beside it — Low, Below Average, Above Average, High or Elite — places that figure against a published reference population, split by age and sex, drawn from: Mandsager K, Harb S, Cremer P, Phelan D, Nissen SE, Jaber W. Association of Cardiorespiratory Fitness With Long-term Mortality Among Adults Undergoing Exercise Treadmill Testing. JAMA Network Open. 2018;1(6):e183605. Two limits come with that band and neither goes away: it ranks you among adults referred for a treadmill test rather than against trained cyclists, so a rider who trains will sit high in it; and it is to be read as a fitness figure, never as a diagnosis.
What this report is not
The report is intended to help riders understand their data, not to provide medical advice or a clinical assessment. Where a result depends on estimated values or limited sensor data, the report identifies those limitations.