# Validation of Instantaneous Respiratory Rate Using Reflectance PPG from Different Body Positions

> Research article (Sensors, 2018) · cited 39× · AI/ML

**Wikidata**: [openalex:W2898689085](https://www.wikidata.org/wiki/openalex:W2898689085)  
**Source**: https://4ort.xyz/entity/validation-of-instantaneous-respiratory-rate-using-reflectance-ppg-from-different-body-positions