A Longitudinal Study of Adolescent Growth

1 The Background to the Study.- Subjects.- Schools.- Methods of Selection.- Separate Evaluation of Leeds and Douai Boys.- Details of Participating Children and Duration of Follow-up.- Methods.- Anthropometric Measurements and Observations.- Urinary Gonadotrophin Hormone Estimations.- Presentation of Results.- Centiles.- Ages.- Puberty Ratings.- References.- Figures and Tables.- 2 Height and Height Velocity.- Findings.- Discussion.- References.- Figures.- 3 Weight and Weight Velocity.- Findings.- Discussion.- References.- Figures.- 4 Growth of the Limbs and Trunk.- Findings.- Discussion.- Growth in the Trunk and Leg.- Growth in Span.- Ratios of the Growth of Body Components.- Reference.- Figures.- 5 Shoulders and Hips, Elbows and Knees.- Findings.- Discussion.- Growth of the Shoulders.- Growth of the Hips.- Growth of the Elbows and Knees.- Figures.- 6 Fat.- Findings.- Measurements of Subcutaneous Fat.- Indices of Body Composition.- Discussion.- Changes in Skinfold Measurements.- Evaluation of Body Fatness.- References.- Figures and Table.- 7 Limb Circumferences and Lean Body Mass.- Findings.- Limb Circumferences.- Lean Body Mass.- Discussion.- Figures.- 8 Pubertal Changes.- Findings.- Age Distribution of Appearance of Pubertal Characteristics.- Sequence of Changes, Time Intervals and Height Increments Between the Stages.- References.- Figures and Table.- 9 Bone Age Studies in a Selected Group of Leeds Boys.- Methods.- Findings.- The Relationship of Skeletal Age to Chronological Age.- The Relationship of Skeletal Age to Stages of Puberty.- The Relationship Between Skeletal Age and Height Changes.- Discussion.- References.- Figures and Tables.- 10 Comparison of Growth of Two Cohorts of Schoolboys in Different Settings.- Subjects and Methods.- Possible Contributory Factors to Growth Variation Between the Groups.- The Day School Versus the Boarding School Setting.- Social and Environmental Background.- Geographical Location.- Findings.- Timing of Pubertal Stages.- Height and Height Velocity.- Components of Stature and Span.- Weight and Weight Velocity.- Components of Weight.- Discussion.- References.- Figures and Tables.- 11 Prediction of Ultimate Stature.- Prediction of Ultimate Stature on the Basis of Bone Age Estimations.- Prediction of Residual Growth and Ultimate Height on the Basis of Pubertal Staging.- Variation in Height Increments Dependent on Age at Puberty.- References.- Figure and Tables.- 12 Urinary Gonadotrophins.- Results.- Girls.- Boys.- Discussion.- References.- Figures.- 13 Comparison of Growth Characteristics of Children of Differing Degrees of Fatness and Differing Weight/Height Relationships.- Classification of the Subjects According to Methods Based on Total Skinfolds or Quetelet's Index at the Age of PHV.- General Considerations.- Findings.- Results Comparing Growth Characteristics of Children Classified According to the Total of 4 Skinfolds.- Results Comparing Growth Characteristics of Children Classified on the Basis of Quetelet's Index.- Conclusions.- References.- Figures and Tables.- 14 Growth Characteristics of Early and Late Developers.- General Considerations.- Findings.- Chronological Ages and Interrelationships of Pubertal Stages.- Measurements.- Example of the Growth of Three Brothers.- Conclusions.- Reference.- Figures and Tables.- 15 Comparisons with Other Studies.- Heights and Weights.- Components of Stature and Girth.- Skinfold Measurements and Estimates of Fatness.- Lean Body Mass.- Timing and Magnitude of Pubertal Changes.- Ultimate Height and Predictive Factors.- The Effects of Degrees of Fatness on Growth and Puberty.- Growth Differences of Early, Average and Late Developing Children.- Conclusion.- References.- Tables.- Appendices.- Appendix 1 Participating Schools.- Appendix 2 Centile Distributions of Measurements.- Appendix 3 Acknowledgements.- References.