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- W2109934577 abstract "The aim of the present study was to evaluate the development of the circadian rhythm of the salivary cortisol in premature infants and its correlation with the onset of the sleep-activity behavior pattern during the first 3 weeks of life under controlled light:dark conditions. Furthermore, we investigated the influence of acoustic stimulation by audiotaped lullabies or the maternal voice on the cortisol values and long-term sleep-activity patterns. The study was a block-randomized, prospective clinical trial with a study population of 62 preterm neonates (30<37 gestational age). We compared two study groups who listened either to music or to the maternal voice (music: N=20; maternal voice: N=20) with a matched control group (N=22). The acoustic stimulation took place every evening between 20:00 and 21:00 h for 30 min over a period of 2 weeks. The cortisol values and activity-rest behavior of the neonates were determined during the first 3 weeks of life on the 1st, 7th and 14th day. Actigraphic monitoring was used to record the activity pattern continuously over 24 h and a validated algorithm for neonates was used to estimate sleep and wakefulness. The saliva samples were obtained 10 min before and 10 min after the acoustic interventions for the study groups. Additionally, saliva samples were obtained from the control group seven times over a 24-h period (20:00, 21:00, 01:00, 05:00, 08:00, 13:00 and 17:00 h). The cortisol data were analyzed by fast Fourier transformation to assess periodic characteristics and frequencies. Hierarchical linear modeling was further performed for the statistical analysis.The cortisol rhythm analysis indicated a circadian rhythm pattern for only one premature infant, all others of the neonates showed no circadian or ultradian rhythm in cortisol. Cortisol level of the premature neonates was significantly higher during the first day of the study period at night-time (median: 17.1 nmol/L, IQR=9.7-24.4 nmol/L) than on days 7 (median: 9.6 nmol/L, IQR=4.7-14.6 nmol/L; Tukey-HSD, z=4.12, p<0.001) and 14 (IQR=5.8-13.7 nmol/L; Tukey-HSD, z=2.89, p<0.05). No significant effect of acoustic stimulation was observed on the cortisol concentration and sleep-wake behavior. The activity-sleep rhythm of preterm neonates was dominated by ultradian rhythm patterns with a prominent period length of 4 h (30.5%). Activity frequencies of neonates were also significantly higher overnight on the first study day (mean: 329±185.1 U) than of night seven (mean: 260.2±132.4 U; Tukey-HSD, z=2.50, p<0.05). Quiet-activity patterns increased, whereas high-activity patterns decreased during the observation period. Average sleep time increased significantly during the study time from day 1 to day 7 (Tukey-HSD, z=2.51, p<0.05). In conclusion, premature infants showed higher cortisol levels - without a circadian rhythmicity - and higher activity frequencies in the first days after birth which may reflect an adaptation process of neonates after birth. Cortisol concentrations and the activity patterns were not influenced by music interventions." @default.
- W2109934577 created "2016-06-24" @default.
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- W2109934577 date "2014-08-18" @default.
- W2109934577 modified "2023-10-16" @default.
- W2109934577 title "Influence of acoustic stimulation on the circadian and ultradian rhythm of premature infants" @default.
- W2109934577 cites W1277966809 @default.
- W2109934577 cites W1790930459 @default.
- W2109934577 cites W1855942042 @default.
- W2109934577 cites W1932458788 @default.
- W2109934577 cites W1965040868 @default.
- W2109934577 cites W1965304139 @default.
- W2109934577 cites W1967465248 @default.
- W2109934577 cites W1968602579 @default.
- W2109934577 cites W1976300737 @default.
- W2109934577 cites W1977366349 @default.
- W2109934577 cites W1977723540 @default.
- W2109934577 cites W1978359845 @default.
- W2109934577 cites W1979153916 @default.
- W2109934577 cites W1982055792 @default.
- W2109934577 cites W1982356221 @default.
- W2109934577 cites W1986608768 @default.
- W2109934577 cites W1988023931 @default.
- W2109934577 cites W1992083012 @default.
- W2109934577 cites W1992202199 @default.
- W2109934577 cites W1992937904 @default.
- W2109934577 cites W1998830199 @default.
- W2109934577 cites W2000597087 @default.
- W2109934577 cites W2003623977 @default.
- W2109934577 cites W2004529785 @default.
- W2109934577 cites W2008074001 @default.
- W2109934577 cites W2011209104 @default.
- W2109934577 cites W2011917973 @default.
- W2109934577 cites W2015659891 @default.
- W2109934577 cites W2042439780 @default.
- W2109934577 cites W2047576779 @default.
- W2109934577 cites W2047662994 @default.
- W2109934577 cites W2051454784 @default.
- W2109934577 cites W2057715585 @default.
- W2109934577 cites W2059315082 @default.
- W2109934577 cites W2059620809 @default.
- W2109934577 cites W2061455537 @default.
- W2109934577 cites W2061693481 @default.
- W2109934577 cites W2069237108 @default.
- W2109934577 cites W2070445081 @default.
- W2109934577 cites W2070829500 @default.
- W2109934577 cites W2072305685 @default.
- W2109934577 cites W2075154593 @default.
- W2109934577 cites W2077378079 @default.
- W2109934577 cites W2078689239 @default.
- W2109934577 cites W2079960250 @default.
- W2109934577 cites W2081297526 @default.
- W2109934577 cites W2088289468 @default.
- W2109934577 cites W2088612638 @default.
- W2109934577 cites W2091393924 @default.
- W2109934577 cites W2092979221 @default.
- W2109934577 cites W2094326792 @default.
- W2109934577 cites W2103053010 @default.
- W2109934577 cites W2106355586 @default.
- W2109934577 cites W2108990794 @default.
- W2109934577 cites W2112583133 @default.
- W2109934577 cites W2117478831 @default.
- W2109934577 cites W2117834449 @default.
- W2109934577 cites W2119159817 @default.
- W2109934577 cites W2122583047 @default.
- W2109934577 cites W2124459062 @default.
- W2109934577 cites W2131201998 @default.
- W2109934577 cites W2139862566 @default.
- W2109934577 cites W2140224616 @default.
- W2109934577 cites W2141077611 @default.
- W2109934577 cites W2148733119 @default.
- W2109934577 cites W2156460128 @default.
- W2109934577 cites W2159984483 @default.
- W2109934577 cites W2161425979 @default.
- W2109934577 cites W2163050106 @default.
- W2109934577 cites W2169568982 @default.
- W2109934577 cites W2405275251 @default.
- W2109934577 cites W2433132977 @default.
- W2109934577 cites W2911304239 @default.
- W2109934577 cites W2987271373 @default.
- W2109934577 cites W4236913998 @default.
- W2109934577 doi "https://doi.org/10.3109/07420528.2014.948183" @default.
- W2109934577 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25133792" @default.
- W2109934577 hasPublicationYear "2014" @default.
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