| Summary: | 碩士 === 國立清華大學 === 體育學系所 === 105 === Purpose: To investigate the changes of heart rate variability (HRV) while listening to fast-tempo music (FTM), slow-tempo music (STM) and non-music (NM) during exercise. HRV indicators included total power, high frequency power, low frequency power, and LF/HF ratio. Methods: Nineteen healthy male college students were recruited (mean age 21.50 ± 2.27 yrs.; height 174.07 ± 6.48 cm; weight 67.11 ± 9.20 kg). Each participant performed three bouts of 30-minute continuous cycling exercise on ergometer with intensity at 50VO2max under manipulation of FTM, STM, and NM as experimental treatments. Heart rates recorded by heart rate monitor (Polar RS800CX). Collected data analyzed with paired t-test to examine the differences of automatic nervous system regulation between rest and exercise, and with repeated one-way ANOVA among three experimental treatments on music tempo. Bonferroni method for post-hoc comparison when needed. Results: Total power, high frequency power, low frequency power and LH/HF ratio were all showed significant differences between rest and exercise (p<.05). The average total power under FTM, STM and NM conditions were 302.35 ± 228.08 ms2, 340.95 ± 257.14 ms2, and 358.99 ± 312.73 ms2respectively, and didn’t show any significant difference (p>.05). The high frequency power values in each condition were 45.20 ± 36.06 ms2, 34.08 ± 28.84 ms2, and 81.24 ± 85.04 ms2 respectively, and showed significant difference (p<.05). Post-hoc comparison indicated higher value in NM than FTM condition. The low frequency power values in each condition were 114.44 ± 89.29 ms2, 138.67 ± 126.33 ms2, and 148.88 ± 168.29 ms2 respectively, and didn’t show any significant difference (p>.05). The LH/HF ratio values in each condition were 5.67 ± 2.85, 6.78 ± 3.39, and 5.08 ± 2.63 respectively, and showed significant difference (p<.05). Post-hoc comparison indicated higher value in STM than FTM and NM. Conclusions: During exercise, listening to music with different tempos or no music did not affect the activation of sympathetic and parasympathetic nerve system. However, listening to slow-tempo music could improve the sympathetic and parasympathetic nerve balance.
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