Carvalho Maria Eduarda Salgado, Justo João Manuel Rosado Miranda
Center for Sociology and Musical Aesthetics Studies (CESEM-NOVA FCSH), 1069-061 Lisbon, Portugal.
Faculty of Psychology, University of Lisbon, 1649-004 Lisbon, Portugal.
Children (Basel). 2024 Mar 21;11(3):373. doi: 10.3390/children11030373.
Humming is probably more effective than speech for improving mothers' cardiorespiratory function and infants' self-regulation. We intend to understand the effects of (1) maternal humming vs. speech on preterm infants' physiological parameters, (2) maternal humming vs. speech on mothers' physiological parameters, and (3) humming melodic contours and the process of the lengthening of the final note on preterm infants' physiological parameters. This study was designed as a single-group repeated measures study, using microanalytical methodology (ELAN software version 4.9.4), with a protocol (silent baseline/speech, humming/silence/humming, or speech/silence) applied to preterm dyads (N = 36). Audio and video observations were recorded. Infants' and mothers' heart rates (HR) and O saturations were observed once a minute. The proportion of O saturation relative to HR (Prop. O saturation/HR) was estimated for both partners during the protocol. We found that the infants' HR mean was significantly lower during humming ( = 0.028), while a significantly higher Prop. O saturation/HR ratio was recorded during humming for infants ( = 0.027) and mothers ( = 0.029). The duration of sinusoidal contours, together with the lengthening of the final note, predicts infants' Prop. O saturation/HR ratio. Musical features of humming seem to improve the physiological stability of preterm infants during kangaroo care.
哼唱可能比言语更有效地改善母亲的心肺功能和婴儿的自我调节能力。我们旨在了解：（1）母亲哼唱与言语对早产儿生理参数的影响；（2）母亲哼唱与言语对母亲生理参数的影响；（3）哼唱的旋律轮廓以及最后一个音符的延长过程对早产儿生理参数的影响。本研究设计为单组重复测量研究，采用微观分析方法（ELAN软件版本4.9.4），对早产母婴对（N = 36）应用一种方案（安静基线/言语、哼唱/安静/哼唱或言语/安静）。记录音频和视频观察结果。每分钟观察一次婴儿和母亲的心率（HR）和血氧饱和度。在方案实施过程中，估计了双方血氧饱和度相对于心率的比例（血氧饱和度/心率比例）。我们发现，哼唱期间婴儿的平均心率显著降低（P = 0.028），而婴儿（P = 0.027）和母亲（P = 0.029）在哼唱期间记录到显著更高的血氧饱和度/心率比例。正弦曲线轮廓的持续时间，以及最后一个音符的延长，可预测婴儿的血氧饱和度/心率比例。哼唱的音乐特征似乎能改善袋鼠式护理期间早产儿的生理稳定性。
