Firstbeat Feature

Lactate Threshold

Your ultimate guide to endurance training and personalized training zones.

See products (13)

What is it?

Lactate Threshold identifies the level of physical activity intensity above which your body will rapidly fatigue. Well-trained runners typically find their lactate threshold at 90% of their maximum heart rate and at a pace somewhere between 10k and half-marathon pace. For less experienced runners, the lactate threshold usually occurs somewhere below 90% of max heart rate.  Once your Lactate Threshold has been identified, you can use it to adjust heart rate-based training zones to match what is really happening in your body. Because your Lactate Threshold responds to training and changes over time, knowing your current level is vital to finding the right training approach and adopting the most effective method of improvement. Newer runners who utilize their Lactate Threshold as an upper limit are able to develop the foundation for long-term engagement without uncomfortably hard training perceptions.

Key Benefits:

  • The best predictor of endurance performance
  • Identify the right pace to achieve your goals
  • Personalize your heart rate zones for all training
  • Monitor progress and motivate improvement

How does it work?

To calculate your Lactate Threshold, the Firstbeat analytics engine requires a stable VO2max estimate and enough quality heartbeat data recorded across a range of different intensities from low to high. This data can be gathered during a guided test specifically designed to record the data needed to detect your Lactate Threshold, or it can be calculated from normal running activities that include enough quality heartbeat data from each zone.

Once this data is obtained, the Firstbeat analytics engine identifies your Lactate Threshold by isolating deflections in your heart rate variability that correlate to key indications of how your respiration patterns respond to the intensity of your activity.

These products include Lactate Threshold

  • Garmin

    quatix 5 Series

    Advanced training monitoring tools onboard state-of-the-art Maritime GPS watch

    11 Firstbeat features

    Read more
  • Garmin

    Forerunner 935

    Premium multi-sport watch with advanced training, fitness, and performance tools

    12 Firstbeat features

    Read more
  • Garmin

    fenix 5

    Training Load and Training Status debut in this premium outdoor...

    12 Firstbeat features

    Read more
  • Garmin

    Forerunner 630

    GPS running watch debuts lactate threshold detection and performance tracking

    7 Firstbeat features

    Read more
  • Garmin

    fenix Chronos

    Advanced training, fitness and stress monitoring in an elegant titanium...

    11 Firstbeat features

    Read more
  • Garmin

    Edge 820

    GPS bike computer monitors performance and detects user VO2max and...

    6 Firstbeat features

    Read more
  • Garmin

    Forerunner 735XT

    Advanced multi-sport watch with state-of-the-art training and fitness monitoring

    7 Firstbeat features

    Read more
  • Garmin

    Tactix Bravo

    Rugged outdoor GPS watch delivers advanced training monitoring and tactical...

    7 Firstbeat features

    Read more
  • Garmin

    quatix 3

    Maritime GPS watch with training, recovery and fitness monitoring capabilities

    7 Firstbeat features

    Read more
  • Garmin

    fēnix 3 HR

    True Performance Meets True Style

    7 Firstbeat features

    Read more
  • Garmin

    Edge 520

    Entry level GPS bike computer detects user VO2max, FTP and...

    4 Firstbeat features

    Read more
  • Garmin

    Fenix 3

    Advanced training and recovery monitioring in a premium outdoor GPS...

    7 Firstbeat features

    Read more
  • Garmin

    Edge 1000

    Bike computer reveals performance capacity and recovery needs

    4 Firstbeat features

    Read more