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Apple Watch VO2 Max Accuracy: ±3.3 vs Lab Test (CPET), Adjust Zone 2 by 5 bpm

Year: 2026

Type: preprint

Abstract: Apple Watch VO2 max accuracy is ±3.3 vs lab CPET. See why test context matters and how to adjust your Zone 2 heart rate by 5 bpm for smarter training. Independent technical note mirroring the canonical version: https://aifitnessadvisor.com/blog/apple-watch-vo2-max-accuracy-33-vs-lab-test-cpet-adjust-zone-2-by-5-bpm.php

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.24003437

Author: Reed, Jackson

Language: English

Topic: Cardiovascular and exercise physiology

Subfield: Physiology (medical)

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: green

OpenAlex ID: W7225432348

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Related to: 10