Recovery capacity as one number.
The Recovery Index is a benchmark that combines two important aspects of recovery during exercise: how quickly an athlete can clear accumulated lactate, and which speed or power can the athlete sustain while doing so.
It combines Lactate Clearance Rate in mmol/L/min with the metabolic load at which that clearance can be achieved and normalizes the result to a scale from 0 to 100.
In short: the Recovery Index combines how fast an athlete can recover with how much work the athlete can still perform while recovering.
How the index is built
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From national federations and Olympic programmes to WorldTour teams and professional clubs worldwide.
Compare recovery at a glance.
Lactate Clearance Rate provides a complete curve showing how recovery changes with exercise intensity. The Recovery Index reduces this information to one practical benchmark.
Instead of comparing a clearance curve, a power output, a running speed or discipline-specific values separately, coaches can use one number to assess and compare an athlete’s recovery capacity during exercise.
Because the load component is based on metabolic load rather than a discipline-specific speed or watts, the Recovery Index can also be used for comparisons across athletes and disciplines, for example between cycling and running within a triathlete.
The practical advantage is simple: one number shows how effectively an athlete can recover while still maintaining meaningful exercise intensity.
Different outputs, one scale
Recovery Index vs. performance in competition.
Lactate is transported, biochemically speaking, together with hydrogen ions. Therefore: clearing lactate goes parallel to clearing the performance limiting acidosis.
Most competitions are not won by maintaining a steady intensity. Football, basketball, road cycling, mountain biking, cross-country skiing, triathlon and even running races etc. are all decided in moments of accelerations, attacks or other high-intensity periods followed by opportunities to recover.
The faster this recovery occurs, and the higher the speed or power an athlete can hold during this recovery, the better the athlete will perform.
The Recovery Index combines both qualities into one number: how quickly the athlete can recover and how much performance can be maintained while doing so.
Recover while still riding
A greater aerobic capacity increases the potential for oxidative lactate utilization and therefore supports lactate clearance.
At the same time, a greater aerobic contribution means that less of the required energy has to be supplied through glycolysis at a given metabolic demand. This can reduce gross lactate production while increasing the capacity to utilize lactate.
An increase in VO₂max will therefore improve the Recovery Index by creating more capacity for lactate utilization while reducing the glycolytic contribution required for the same metabolic load.
If you want to understand why an athlete’s Recovery Index changes, VO₂max is one of the key metrics to examine.
Recovery Index and VO₂max
A higher glycolytic power (VLamax) increases the rate of glycolytic energy production and, with it, gross lactate production.
Greater lactate production leaves less capacity to deal with additional lactate that has accumulated during a preceding high-intensity effort. At a given aerobic capacity and load (speed or power), a higher VLamax will therefore reduce the athlete’s effective recovery capacity and lower the Recovery Index.
This makes VLamax an important part of understanding why two athletes with similar aerobic capacities can still recover very differently during repeated or fluctuating exercise.
If recovery during competition is the goal, the balance between VO₂max and VLamax matters, not either metric in isolation.
Recovery Index and VLamax
Explore other INSCYD metrics.
Lactate Clearance Rate provides a complete curve showing how recovery changes with exercise intensity.
Read more VO₂maxIf you want to understand why an athlete’s Recovery Index changes, VO₂max is one of the key metrics to examine.
Read more VLamaxThis makes VLamax an important part of understanding why two athletes with similar aerobic capacities can still recover very differently during repeated or fluctuating exercise.
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