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[Sexual and biological maturation]

L A García Llop1, A Ramada Benedito

  • 1Centro de Salud Calatayud Norte, Zaragoza.

Anales Espanoles De Pediatria
|March 1, 1993
PubMed
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Sexual maturation stage (SMS) significantly impacts physical strength and electrocardiographs in children aged 8-15. Pediatricians should use SMS, not chronological age, for evaluating biological functions in developing individuals.

Area of Science:

  • Pediatric cardiology
  • Sports medicine
  • Human physiology

Background:

  • Children's physical and electrocardiographic characteristics change significantly during puberty.
  • Sexual maturation stage (SMS) is a key factor in biological development.
  • Chronological age may not accurately reflect developmental status.

Purpose of the Study:

  • To investigate the relationship between sexual maturation stage (SMS) and physical/electrocardiographic parameters in children.
  • To highlight the importance of using SMS over chronological age for pediatric health assessments.
  • To provide data for better understanding of adolescent physical development.

Main Methods:

  • Studied 291 boys (9-15 years) and 284 girls (8-14 years) across sexual maturation stages (SMS 1-5).

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  • Assessed physical strength using the Ruffier-Dickson test.
  • Recorded electrocardiographic indices, including resting and post-exercise measurements.
  • Utilized Analysis of Variance (ANOVA) for statistical analysis.

    • Main Results:

    • In girls, SMS significantly influenced sport hours/week, blood pressure (rest & post-effort), Ruffier-Dickson index, pressure frequency product, and specific ECG indices.
    • In boys, SMS significantly affected sport hours/week, blood pressure, post-exercise heart rate, Ruffier-Dickson index, pressure frequency product, and ECG indices.
    • Both sexes showed statistically significant dependencies of various physiological markers on their sexual maturation stage.

    Conclusions:

    • Sexual maturation stage (SMS) is a more relevant indicator than chronological age for evaluating children's physical and cardiac function.
    • Pediatricians should incorporate SMS assessment into routine evaluations of biological functions.
    • This approach allows for more accurate and individualized health monitoring during childhood and adolescence.