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Frontiers Fractal Correlation Properties of Heart Rate Variability as a Biomarker for Intensity Distribution and Training Prescription in Endurance Exercise: An Update

Frontiers Internal and external load during on-field training drills with an aim of improving the physical performance of players in professional soccer: a retrospective observational study

Frontiers Heart rate variability: A biomarker of frailty in older adults?

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Bioengineering, Free Full-Text

Sensors, Free Full-Text

Mean heart rate value for the Apple watch and Polar H10 on three

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Sensors, Free Full-Text

Sensors, Free Full-Text

Frontiers Psychophysiological Benefits of Real-Time Heart Rate Feedback in Physical Education

Polar H10 Polar USA