Effects of Atypical Patterns of Fetal Growth on Newborn (NBAS) Behavior

Lester, Barry M.; García-Coll, Cynthia; Valcárcel, Marta; Hoffman, Joel C.; Brazelton, T. Berry

doi:10.2307/1130633

Cited by 38 publications

(11 citation statements)

References 12 publications

(14 reference statements)

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“…A comparison of Kenyan infants' scores with those for other populations might reveal some unusual aspects of the study. In Table 3, the mean scores of Kenyan infants on the seven clusters are presented along with the results for 228 African-American infants (Oyemade et al, 1994) and for a sample of 37 infants from Puerto Rico (Lester et al, 1986); the latter researchers did not report standard deviations. The mean scores on the clusters were similar for the three populations, though there were some differences.…”

Section: Results For Scores On the Brazelton Nbasmentioning

confidence: 99%

Modeling the effects of maternal nutritional status and socioeconomic variables on the anthropometric and psychological indicators of Kenyan infants from age 0-6 months

Bhargava

2000

Am. J. Phys. Anthropol.

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This paper presents a comprehensive empirical analysis of the factors affecting growth and psychological development of over 100 infants from birth to age 6 months in the Embu region of Kenya. The analysis was divided into four parts. First, infants' birth weight, and length and head circumference as measured few days after birth, were modeled using multiple regression models. Maternal prepregnancy body mass index (BMI), gestation period, and parity were associated with infants' anthropometric measurements (P < 0.05). Second, the scores on seven clusters of the Brazelton Neonatal Behavioral Assessment Scale were explained by health and socioeconomic indicators. While the models had poor predictive power, the scores were comparable to those reported in the literature for Puerto Rican and African American infants. The third part of the analysis modeled infant growth between 1-6 months by analyzing longitudinal data on length, head circumference, and weight. Dynamic models were postulated for the effects of nutritional, socioeconomic, and environmental factors and morbidity on anthropometric variables. The results showed that infants' calcium intakes were positively associated with length (P < 0.05). Maternal BMI and hemoglobin concentration were positively associated with infant weight (P < 0. 05); infant morbidity was negatively associated with weight (P < 0. 05). Lastly, the infants' scores at 6 months on the Bayley Motor Scale and on eight items from the Bayley Infant Behavior Record were explained using anthropometric, socioeconomic, and psychological variables. The infants' arm circumference and intake of protein were significant predictors of scores on the Bayley Motor Scale. In addition, time spent by the mother talking to the infant was positively associated with the scores on the Bayley Infant Behavior Record. The empirical results have implications for identifying vulnerable children in developing countries.

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Section: Results For Scores On the Brazelton Nbasmentioning

confidence: 99%

Modeling the effects of maternal nutritional status and socioeconomic variables on the anthropometric and psychological indicators of Kenyan infants from age 0-6 months

Bhargava

2000

Am. J. Phys. Anthropol.

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“…An atypical PI indicates a subtle condition of malnutrition which occurs during the third trimester when mass or weight is accumulated around the length of the fetus and nutritional needs are increased (Lester, 1979;Lester, Garcia-Coll, Valcarcel, Hoffman, & Brazelton, 1986;Miller & Hassanein, 1971). A diet lacking in protein and/or the improper metabolization of existing nutrients may lead to either low or high fetal weight gain (Ounsted & Ounsted, 1973).…”

Section: Discussionmentioning

confidence: 99%

Rhythmic organization of neonatal heart rate and its relation to atypical fetal growth

Zeskind

Goff

Marshall

1991

Developmental Psychobiology

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The rhythmic organization underlying long-term heart rate variability was examined in 36 newborn infants. Heart rate was registered every 30 s for 2 continuous hr while infants rested in a temperature-controlled isolette. Spectrum analysis of the time-series of the 240 observations detected rhythmically organized changes in the heart rates of 33 of the 36 infants. Thirty of the 33 infants showed a basic rhythm at 1.5 +/- .5 cycles per hr (one cycle every 30 to 60 min). While 9 infants showed this single cycle in behavioral activity, 24 infants showed additional cycles at a wide range of faster frequencies. Infants with signs of atypical fetal growth less often showed evidence of these multiple cycles, had reliably fewer cycles in heart rate, and had a marginally lower power in their basic cycle than infants with typical patterns of fetal growth. Infants with multiple cycles in the power spectra, independent of fetal growth group, were more often observed in Alert and Active Alert behavioral states and less often in Active Sleep than comparison infants. Results indicate that 1) heart rates of newborn infants show evidence of the 30- to 60-min cycle characteristic of the Basic Rest-Activity Cycle found in other behaviors, and 2) the complexity of behavioral rhythms may be affected by prenatal malnutrition. Viewed within a dynamical systems approach to development, results suggest that the complexity of rhythms in behavior may reflect the complexity of behavioral organization.

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“…In (Oyemade et al, 1994) and for a sample of 37 infants from Puerto Rico (Lester et al, 1986); the latter researchers did not report standard deviations. A comparison of Kenyan infants' scores with those for other populations might reveal some unusual aspects of the study.…”

Section: Results For Scores On the Brazelton Nbasmentioning

confidence: 99%

“…3 Habituation, Orientation, and Motor clusters were defined byLester et al (1986). 2 Reflex was the cluster based on 18 elicited responses.…”

mentioning

confidence: 99%

Modeling the Effects of Maternal Nutritional Status and Socioeconomic Variables on the Anthropometric and Psychological Indicators of Kenyan Infants From Age 0–6 Months

Bhargava¹

2006

Econometrics, Statistics and Computational Approaches in Food and Health Sciences

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This paper presents a comprehensive empirical analysis of the factors affecting growth and psychological development of over 100 infants from birth to age 6 months in the Embu region of Kenya. The analysis was divided into four parts. First, infants' birth weight, and length and head circumference as measured few days after birth, were modeled using multiple regression models. Maternal prepregnancy body mass index (BMI), gestation period, and parity were associated with infants' anthropometric measurements (P Ͻ 0.05). Second, the scores on seven clusters of the Brazelton Neonatal Behavioral Assessment Scale were explained by health and socioeconomic indicators. While the models had poor predictive power, the scores were comparable to those reported in the literature for Puerto Rican and African American infants. The third part of the analysis modeled infant growth between 1-6 months by analyzing longitudinal data on length, head circumference, and weight. Dynamic models were postulated for the effects of nutritional, socioeconomic, and environmental factors and morbidity on anthropometric variables. The results showed that infants' calcium intakes were positively associated with length (P Ͻ 0.05). Maternal BMI and hemoglobin concentration were positively associated with infant weight (P Ͻ 0.05); infant morbidity was negatively associated with weight (P Ͻ 0.05). Lastly, the infants' scores at 6 months on the Bayley Motor Scale and on eight items from the Bayley Infant Behavior Record were explained using anthropometric, socioeconomic, and psychological variables. The infants' arm circumference and intake of protein were significant predictors of scores on the Bayley Motor Scale. In addition, time spent by the mother talking to the infant was positively associated with the scores on the Bayley Infant Behavior Record. The empirical results have implications for identifying vulnerable children in developing countries. Am J

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Effects of Atypical Patterns of Fetal Growth on Newborn (NBAS) Behavior

Cited by 38 publications

References 12 publications

Modeling the effects of maternal nutritional status and socioeconomic variables on the anthropometric and psychological indicators of Kenyan infants from age 0-6 months

Modeling the effects of maternal nutritional status and socioeconomic variables on the anthropometric and psychological indicators of Kenyan infants from age 0-6 months

Rhythmic organization of neonatal heart rate and its relation to atypical fetal growth

Modeling the Effects of Maternal Nutritional Status and Socioeconomic Variables on the Anthropometric and Psychological Indicators of Kenyan Infants From Age 0–6 Months

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