Validation of a Photoplethysmographic Heart Rate Monitor: Polar OH1
Open accessAbstract
This study assessed the validity of a photoplethysmographic heart rate (HR) monitor, the Polar OH1 in various sports performed in ecological conditions: running, cycling, soccer, kayaking, walking, tennis and fitness. Seventy trained athletes (56 males, 14 females) wore the Polar OH1 armband and the H7 chest belt during training. A total of 390 h and 38 min of recording were compared using a 20-bpm window to assess data quality, and Bland-Altman agreements and ICC analyses were used to test accuracy. Linear regression analyses evaluated the HR accuracy and correlation with skin tone. Training loads (TRIMPs) were compared for each session. Reliability was high for endurance sports (>99%) and lower for sports involving arm movements (92~95%). Biases were slightly negative for all sports, whereas widths of limits of agreement varied from 7–20bpm. Bland-Altman agreements were all under 5% except tennis, kayak and fitness. HR accuracy was positively correlated to skin tone (p<0.05). Finally, TRIMPs from the OH1 device were inferior to criterion’s (except walking and soccer), within a 3% range from reference. Hence, OH1 represents a valid tool to monitor instantaneous HR and training load, especially for endurance sports.
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Hermand et al. reported lower heart rate accuracy in patients with darker skin (p < 0.001).
“Hermand et al. reported lower heart rate accuracy in patients with darker skin (p < 0.001) [15].”
From Accuracy of heart rate measurement with wrist-worn wearable devices in various skin tones: a systematic review (2023) · cites this paper as [15]
Four of the ten included studies reported statistically significant reductions in heart rate measurement accuracy in participants with darker skin tones compared to participants with lighter skin tones.
“Overall, four of the ten studies reported a significant reduction in accuracy of heart rate measurement with wearable devices in darker-skinned individuals, compared to participants with lighter skin tones.”
From Accuracy of heart rate measurement with wrist-worn wearable devices in various skin tones: a systematic review (2023) · cites this paper as [15]
Hermand et al. found that bias (mean difference between the Polar OH1 and ground truth) increased with darker skin (p < 0.001), and heart rate accuracy was positively correlated to skin tone (p < 0.05).
“In determining heart rate, it was found that bias (defined as the mean difference between the OH1 and ground truth) increased with darker skin (p < 0.001), and heart rate accuracy was positively correlated to skin tone (p < 0.05).”
From Sources of inaccuracy in photoplethysmography for continuous cardiovascular monitoring (2021) · cites this paper as [41]
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Noninvasive Estimation of Glycated Hemoglobin: A Comprehensive Review of Emerging Technologies
Saini, S. K., Tiwari, S., Joshi, A. M., & Maddila, R. K. (2026) · IETE Technical Review · doi:10.1080/02564602.2026.2701257
- Authors
- Hermand, E., Cassirame, J., Ennequin, G., & Hue, O.
- Affiliations
- EA3596 ACTES ‘Acclimatation au Climat Tropical, Exercice et Santé’, Universite des Antilles et de la Guyane, Pointe-a-Pitre, Guadeloupe
- Laboratoire Culture, Sport, Santé, Société (FR)
- Université de Franche-Comté (FR)
- Venue
- International Journal of Sports Medicine
- Publisher
- Georg Thieme Verlag KG
- Published
- 2019-06-12
- Volume
- 40
- Issue
- 07
- Pages
- 462-467
- ISSN
- 0172-4622 (ISSN-L)
- 1439-3964
- OpenAlex
- W2953139684
- Cited by
- 59
- References
- 41
- Citations by year
- 2026: 5 · 2025: 10 · 2024: 7 · 2023: 14 · 2022: 8 · 2021: 10 · 2020: 5
- FWCI
- 2.02
- Type
- journal article
- Language
- en
- Open access
- green
- hal.science
- Licence
- other-oa
- Locations
- International Journal of Sports Medicine (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion, other-oa)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Non-Invasive Vital Sign Monitoring
- Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Keywords
- photoplethysmography, heart rate monitors, armband, device validation, training load, training impulse, skin tone, endurance sports, sports training, athlete monitoring, measurement bias
- MeSH terms
- Wearable Electronic Devices, Adolescent, Arm, Female, Heart Rate, Humans, Male, Monitoring, Physiologic, Physical Endurance, Sports, Young Adult, Physical Conditioning, Human
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