Treffer: A novel approach to exercise heart rate estimation combining PPG quality assessment with DNN modeling.

Title:
A novel approach to exercise heart rate estimation combining PPG quality assessment with DNN modeling.
Authors:
Wu M; School of Microelectronics, University of Science and Technology of China, Hefei, China., Chen X; School of Microelectronics, University of Science and Technology of China, Hefei, China. xch@ustc.edu.cn.
Source:
Medical & biological engineering & computing [Med Biol Eng Comput] 2025 Nov; Vol. 63 (11), pp. 3185-3202. Date of Electronic Publication: 2025 Jun 04.
Publication Type:
Journal Article
Language:
English
Journal Info:
Publisher: Springer Country of Publication: United States NLM ID: 7704869 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1741-0444 (Electronic) Linking ISSN: 01400118 NLM ISO Abbreviation: Med Biol Eng Comput Subsets: MEDLINE
Imprint Name(s):
Publication: New York, NY : Springer
Original Publication: Stevenage, Eng., Peregrinus.
References:
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Grant Information:
82272113 the National Nature Science Foundation of China; 61871360 the National Nature Science Foundation of China
Contributed Indexing:
Keywords: Bidirectional long short-term memory; Convolutional neural network; Deep neural network; Frequency domain kurtosis; Heart rate estimation; Photoplethysmogram
Entry Date(s):
Date Created: 20250603 Date Completed: 20251120 Latest Revision: 20251120
Update Code:
20251121
DOI:
10.1007/s11517-025-03379-x
PMID:
40461925
Database:
MEDLINE

Weitere Informationen

This paper proposes a novel approach for exercise heart rate (HR) estimation by integrating PPG quality assessment with deep neural network (DNN) modeling. A frequency-domain kurtosis (kurtF) metric is introduced to identify high-quality PPG samples, optimizing DNN training data and mitigating motion artifacts. An E-K scatter plot is used to visualize sample quality distribution, aiding dataset variability analysis. The proposed DNN model, designed for single-channel PPG input, demonstrates strong HR estimation performance on public datasets, achieving a mean absolute error (MAE) values of 3.76 bpm (PPG_DaLiA) and 3.18 bpm (IEEE-Training). Theoretical analysis and experimental validation confirm that prioritizing high-quality samples enhances model stability, accuracy, and generalizability. Additionally, a dataset quality analysis method is introduced to facilitate comparative assessments. The kurtF metric and quality-driven sample selection strategy provide a robust framework for improving HR estimation, even in data-limited scenarios. This study underscores the importance of integrating sample quality assessment into HR estimation workflows, paving the way for more accurate and reliable PPG-based HR monitoring during exercise.
(© 2025. International Federation for Medical and Biological Engineering.)

Declarations. Competing interests: The authors declare no competing interests.