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Tracking of blood pressure during childhood: the Muscatine Study
Insights
Childhood blood pressure percentile ranks are influenced by body size. Growth rate significantly impacts blood pressure, highlighting the importance of monitoring children's relative growth for cardiovascular health.
Area of Science:
- Pediatric Health
- Cardiovascular Science
- Growth and Development
Background:
- Childhood obesity is a growing concern with potential long-term health implications.
- Establishing healthy cardiovascular parameters in children is crucial for preventing future disease.
Purpose of the Study:
- To investigate the relationship between body size and blood pressure trends in children.
- To determine if the rate of growth influences blood pressure percentile ranks.
Main Methods:
- Longitudinal study of 4,313 children aged 5-14 years in Muscatine, Iowa.
- Blood pressure, height, weight, and skinfold thickness were measured over 3-6 occasions.
- Data analyzed using percentile ranks to assess levels, trends, and variability over time.
Main Results:
- Significant correlations were found between average blood pressure percentile rank and average body size percentile rank.
- A significant relationship was observed between the trend of blood pressure percentiles and the trend of body size percentiles.
- Relative rate of growth was a key factor in establishing blood pressure rank order.
Conclusions:
- Childhood body size and growth rate are significant determinants of blood pressure percentile ranks.
- Monitoring relative growth is essential for understanding and managing pediatric blood pressure.
- These findings underscore the importance of early growth assessment for cardiovascular health in children.
Abstract:
Four thousand three hundred and thirteen children beginning at five to fourteen years of age have been examined on three to six occasions in Muscatine, Iowa on alternate years. To compare blood pressures throughout the period of observation each value was expressed as a percentile rank. For each subject the average percentile rank (level), the trend in rank and the variability over time were calculated. Values for height, weight, relative weight and triceps skinfold thickness measurements were expressed in the same fashion. The relationship between average rank of blood pressure and average rank of body size as well as between trend of blood pressure and trend of body size percentiles were significant (p less than .05). These observations indicate the importance of relative rate of growth in the establishment of the rank order of blood pressure.