HEART
The HRR and HRV testing was completed independently by two professionals, and the relevant test methods and precautions were explained to each participant before the test. The HRV measurement system Ubpuse T1 (Biospace, Korea) was used to measure the HRV index 0–1 min before the warm‐up. During the recovery period (0–16 min after the cycling test), the participants in all four groups listened to piano songs on a headset (Sony WH‐1000XM3, Japan) at four different speeds according to their group assignment, as shown in Table Heart rate variability index parameters.