gpx-ideas

GPX Extensions - Fitness

Overview

Core outputs from fitness and cycling sensors / devices are commonly added to GPX files via proprietary extensions.

Name	Values	Description
<hr>	int > 0	Heart rate in beats per minute (bpm)
<spo2>	0-100	SpO2 (oxygen saturation) as a percentage (%)
<cad>	>= 0	Cycling (cadence), running (stride rate), or swimming / rowing (stroke rate)
<power>	>= 0	Power in watts (W)
<energy>	>= 0	Total energy in kilo calories (kcal)
<elegain>		Total elevation gain in meters (m)
<steps>	int >= 0	Total steps during the session

Sources for these metrics are optional, but if provided would be in elements such as <gpx>, <trk> or <trkseg> as per the examples.

Notes

• A universal cadence metric is included in this extension, since the word “cadence” is universal across multiple sports
  • Cadence is essentially a rhythm and is typically measure of how many times something happens (e.g. steps, strokes) in a minute
• Energy is included to avoid the cumulative errors that might occur when converting from power readings
• Elevation gain is included to avoid cumulative errors

Example Usage

Land / Fitness

• Running
• Cycling

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