Edmonds Rohan, Wood Meaghan, Fehling Patricia, DiPasquale Sarah
Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE 68178, USA.
Department of Health and Human Physiological Sciences, Skidmore College, Saratoga Springs, NY 12866, USA.
Sports (Basel). 2018 Dec 21;7(1):3. doi: 10.3390/sports7010003.
Heart rate (HR) variability (HRV) is a useful tool for assessing cardiac autonomic function and identifying potential readiness to perform in athletic populations, but has yet to be investigated in dance populations. As such, HRV may be able to provide valuable insight into the preparedness of dancers and the demands of performance in a collegiate dance population. 29 female dancers were monitored leading up to and following a dance performance. Analysis of HRV focused on the square root of the mean squared differences of the successive RR intervals (RMSSD). A one-way ANOVA, with Bonferroni post-hoc, paired with magnitude-based-inferences (MBI) with effect sizes (ES) were used to analyze changes during the Winter Dance Concert, while the Recovery-Stress Questionnaire for Athletes (REST-Q Sport) measured the frequency of stress of dancers. When compared to baseline (69.8 ± 1.7 bpm), mean (HR) was increased at both pre-show recordings (76.5 ± 2.1 bpm and 75.6 ± 1.8 bpm). In contrast, RMSSD was significantly diminished ( < 0.05) at both pre-show recordings (40.6 ± 28.4 ms and 40.5 ± 21.8 ms) as compared to baseline (70.3 ± 38.4 ms). Dancers reported increased ( < 0.05) self-efficacy before the second show and at 36 h post-concert. As expected, Dance Exposure (DE) increased significantly ( < 0.05), while Academic Exposure (AE) was similar, during the week leading up to the dance concert. The results suggest dancers responded to concert dance performances similarly to other athletic populations approaching intense competition by exhibiting decreased parasympathetic activity prior to the dance performances, which returned to baseline values 36 h after their performances. Given the increase in self-efficacy, these fluctuations may indicate a readiness to a performance comparable to athletes.
心率（HR）变异性（HRV）是评估心脏自主神经功能以及确定运动员群体潜在竞技准备状态的有用工具，但尚未在舞蹈群体中进行研究。因此，HRV或许能够为大学生舞蹈群体中舞者的准备情况以及表演需求提供有价值的见解。对29名女性舞者在舞蹈表演前后进行了监测。HRV分析聚焦于连续RR间期均方根差（RMSSD）。采用单因素方差分析及Bonferroni事后检验，并结合效应量（ES）的基于量级的推断（MBI）来分析冬季舞蹈音乐会期间的变化，同时使用运动员恢复 - 压力问卷（REST - Q Sport）来测量舞者的压力频率。与基线（69.8±1.7次/分钟）相比，在演出前的两次记录中平均心率（HR）均升高（76.5±2.1次/分钟和75.6±1.8次/分钟）。相比之下，与基线（70.3±38.4毫秒）相比，在演出前的两次记录中RMSSD均显著降低（<0.05）（40.6±28.4毫秒和40.5±21.8毫秒）。舞者报告在第二场演出前和音乐会结束后36小时自我效能感增强（<0.05）。正如预期的那样，在舞蹈音乐会前一周，舞蹈暴露（DE）显著增加（<0.05），而学业暴露（AE）相似。结果表明，舞者对音乐会舞蹈表演的反应与其他接近激烈比赛的运动员群体类似，即在舞蹈表演前副交感神经活动降低，在表演后36小时恢复到基线值。鉴于自我效能感的增强，这些波动可能表明舞者与运动员一样对表演做好了准备。
