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Polar Cardio load API

Cardio load is based on training impulse calculation (TRIMP), a commonly accepted and scientifically proven method to quantify training load. Your Cardio load value tells you how much strain your training session put on your cardiovascular system. The higher the Cardio load, the more strenuous the training session was for the cardiovascular system. Cardio load is calculated after every workout from your heart rate data and session duration. For more detailed information please check [cardio load](https://support.polar.com/e_manuals/unite/polar-unite-user-manual-english/cardio-load.htm).

Polar Cardio load API is one of 19 APIs that Polar publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

Tagged areas include Cardio load. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an AsyncAPI specification, and code examples.

This API exposes 5 operations across 5 paths, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version v3.

Requests are made against a single base URL, https://www.polaraccesslink.com/.

5 operations 5 paths 4 schemas 5 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
v3
Base URL
https://www.polaraccesslink.com/
Authentication
HTTP Basic, OAuth 2.0
Contact
Resource Areas
1

Authentication & Security 2

Polar Cardio load API declares 2 security schemes for authenticating requests. It accepts HTTP basic authentication (Basic). It supports OAuth 2.0 (OAuth2) using the authorizationCode flow, exposing 1 scope.

Paths & Operations 5

Across 5 paths, the API surfaces 5 operations — 5 GET. Each is listed below with its method, path, parameters, and response codes.

Cardio load 5

Cardio load is based on training impulse calculation (TRIMP), a commonly accepted and scientifically proven method to quantify training load. Your Cardio load value tells you how…

GET
/v3/users/cardio-load
List cardio loads
→ 200401403
GET
/v3/users/cardio-load/{date}
Get cardio load by date
1 param → 200400401403
GET
/v3/users/cardio-load/date
Get cardio load by date range
2 params → 200400401403
GET
/v3/users/cardio-load/period/days/{days}
Get historical data by days
1 param → 200400401403
GET
/v3/users/cardio-load/period/months/{months}
Get historical data by months
1 param → 200400401403

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are cardio-load (7 properties), cardio-load-levels (5 properties). Each schema is shown below with its type and property counts.

cardio-load-status-enum
string
Text representation of cardio load status.
cardio-load-schema
array
List of cardio loads.
cardio-load
object
Cardio load model.
7 properties
cardio-load-levels
object
Cardio load levels indicate how hard a training session was compared to your session average from the past 90 days.
5 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

polar-cardio-load-api-openapi.yml Raw ↑

Other APIs Polar publishes across the network.

Polar BLE SDK
Polar Continuous Heart Rate API
Polar Daily activity API
Polar Daily activity (deprecated) API
Polar Elixir™ Biosensing API
Polar Exercises API
Polar Exercises (deprecated) API
Polar Nightly Recharge API
Polar Physical info API
Polar Physical info (deprecated) API
Polar Player training sessions API
Polar Pull notifications API
Where this information came from

This is an independent, third-party profile of Polar Cardio load API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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