Tips for Calibration recordings

Updated 4 months ago by Peter Li

How many recordings do I need?

Typically, 3 to 5 “Great Match” or “Partial Match” recordings are required for more than 90% calibration accuracy. The more recordings that are added, the more reliable Atlas Body Sensing will be.

However, there are exceptions to the typical rule. For example, “large motions” exercises like Jumping Jacks or Burpees could require as few as 3 recordings for a high quality calibration. However, “small motions” exercises like Push-Ups or Stair Master with Hands On Bars could require 5 or more recordings for a high quality calibration.

Isometric exercises with practically motion are not compatible with Atlas Body Sensing. For example, when performed with correct form, “zero motion” exercises like Plank or Seated Quad Hyperextensions, will have effectively zero motion in 3D space. These types of exercises can still be logged manually on the Multi-Trainer 3. Learn more about logging isometric and non-repetitive exercises.

Limitations of Atlas Body Sensing

  1. Atlas Body Sensing relies on 3D motion sensors and can only sense repetitive motions. If it’s repetitive and has significant motion, it can be automatically logged!

For example, when completing indoor cycling, your motion is repetitive, however the Multi-Trainer 3 is worn on your wrist and may not have significant motion. Indoor cycling is best logged manually. Learn more about logging isometric or isolation exercises.

  1. Atlas Body Sensing automatically identifies the exercise and analyzes your motion after you complete 3 or more repetitions that match your recorded form.

For example, when completing a one-repetition-maximum test, you may only complete a single repetition in your final set. That set with a single set may not be effectively sensed. Low-rep sets are best logged manually. Learn more about logging low-rep exercises.

Top reasons to calibrate an exercise

  1. A new user will need to calibrate their Atlas Multi-Trainer
  2. To improve the accuracy of an existing exercise
  3. When creating a new exercise that isn't in the Atlas database

Which exercises need to be calibrated?

  1. Atlas Multi-Trainer will not automatically sense for or track exercises that require calibration. After calibration, these exercises can be automatically sensed.
  2. Exercises that require calibration are designated with a red “●” icon in the Atlas smartphone app and a red Center Bar on the watch.
  3. These exercises must first be recorded 3 to 5 times before they can be automatically Sensed.

General tips for recording form for calibration

After a calculation, poor recordings may be marked with "Bad Match". Swipe to delete the recording from your Calibration.

  • What causes a "Bad Match"
    • A recording may display a Bad Match status if:
      • The number of repetitions you completed does not match the logged number of repetitions
      • The recording began too early before you were in the correct position
      • The recording ended too late and includes extra data other than the correct exercise motion
  • Add more recordings to further improve tracking accuracy.
  • To get the most accurate recording, get in to the starting position of the exercise before recording. When you complete the set, end the recording as quickly as possible to avoid including other non-repetitive motions in the recording.
  • The default library is built from thousands of fitness enthusiasts but every body is different. Creating or customizing exercises with your own recordings may increase training accuracy. Atlas Multi-Trainer will track future exercises based on your recorded form.
  • While recording, perform the exercise recordings as you would normally perform them at the gym. Atlas Multi-Trainer is only as smart as you make it. Performing an exercise perfectly while training, then poorly while exercising may lead to reduced accuracy.
  • If you manually log an exercise with Log Extra, the data will not be recorded. Exercises added with Log Extra will not improve your tracking experience. (not released yet)
  • If you manually log an exercise in the middle of a workout, you can save it as a default exercise name and rename it later in the app. After renaming the exercise, the recorded data will be saved and added to your calibration logs. (not released yet)


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