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Types of devices used for the monitoring of physiological parameters (heart rate and electrocardiogram signals; N=23).
| Devices | Count, n (%) |
| HypoMon | 3 (13) |
| Basis peak fitness band | 2 (9) |
| Compumedics system | 12 (52) |
| A battery-powered chest belt–worn (customized) | 5 (22) |
| Self-designed portable apparatus (customized) | 1 (4) |
