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Being born large for gestational age is associated with earlier pubertal take-off and longer growth duration: a longitudinal study.
Acta Paediatrica 2017 January
AIM: Perinatal factors seem to influence the onset of puberty, but there is limited information on the potential effect of large size at birth on pubertal growth. This study evaluated pubertal growth in children born large for gestational age (LGA) compared to children born appropriate for gestational age (AGA).
METHODS: Longitudinal growth data collected from 70 children - 40 AGA and 30 LGA - were analysed. The ages at take-off, peak height velocity, final height and pubertal growth spurts were calculated using the Preece-Baines model I.
RESULTS: Large for gestational age children showed an earlier age at take-off compared to AGA children (10.1 ± 1.2 versus 11.0 ± 1.4 years, p = 0.007), whereas the age at peak height velocity and at final height was similar. LGA children showed a longer growth spurt duration (2.5 ± 1 versus 1.5 ± 1.2 years, p < 0.001) and total pubertal duration (5.3 ± 1.2 versus 4.6 ± 1.2 years, p = 0.036) than AGA children. Results were similar when stratified by sex.
CONCLUSION: Being born LGA was associated with an earlier pubertal take-off and longer growth duration. These unique findings, due to the lack of studies on pubertal growth patterns in LGA children, might lead the way to novel research and a different approach to LGA children at the onset of pubertal growth.
METHODS: Longitudinal growth data collected from 70 children - 40 AGA and 30 LGA - were analysed. The ages at take-off, peak height velocity, final height and pubertal growth spurts were calculated using the Preece-Baines model I.
RESULTS: Large for gestational age children showed an earlier age at take-off compared to AGA children (10.1 ± 1.2 versus 11.0 ± 1.4 years, p = 0.007), whereas the age at peak height velocity and at final height was similar. LGA children showed a longer growth spurt duration (2.5 ± 1 versus 1.5 ± 1.2 years, p < 0.001) and total pubertal duration (5.3 ± 1.2 versus 4.6 ± 1.2 years, p = 0.036) than AGA children. Results were similar when stratified by sex.
CONCLUSION: Being born LGA was associated with an earlier pubertal take-off and longer growth duration. These unique findings, due to the lack of studies on pubertal growth patterns in LGA children, might lead the way to novel research and a different approach to LGA children at the onset of pubertal growth.
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