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Sensors | Free Full-Text | Validity of the Polar H7 Heart Rate Sensor for Heart Rate Variability Analysis during Exercise in Different Age, Body Composition and Fitness Level Groups
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Amazon.com : XXXL - Heart Rate Monitor USA Replacement Soft Strap SIZE XXXL (46 -77 Inches) (works with Polar H1, H7, H10 and Polar Wearlink Models) : Sports & Outdoors
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