Read e-book online A Longitudinal Study of Adolescent Growth PDF

By J. M. H. Buckler

A Longitudinal examine of Adolescent Growth reviews the findings of a longitudinal learn of the expansion of 2 hundred schoolboys and a hundred schoolgirls during the process early life. in addition to top and weight, a few dozen different actual measures have been studied or regarding one another and to the staging of sexual features. those values are analysed in keeping with either the chronological age and age in response to a typical pubertal attribute of height peak pace. the variety of significance and timing of pubertal occasions is defined and in comparison for girls and boys. those fresh facts are in comparison with prior ecu and North American longitudinal reviews, particularly these of Tanner carried out over two decades in the past. additionally new details is equipped which contrasts progress of 2 huge cohorts of boys in several geographical and social settings, and compares the expansion styles of skinny and exogenously overweight matters and of early and later maturers.

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Figures N 00 ~ '-<: on o 0. on cr' (1) N + + ...... 0' eD on l> Cl ...... I I N ::to I:l (1) ('l §: ..... ~ .... j:> I \ I I \ '\ h b b\ q , b h o en '0 I 6 '? j:> o en ...... j:> ...... co \ \ b "0 '"'\ , b\ '. ' '0 o '. en II I ~ b 0 CD 0 '0 q' , ~ 9 ~ ~ ...... , '\ '. Co) ~~ ~ ~~ \ \~ ~ ~ ~~ ~ \ ~ ~ q w o ...... N ...... ,j Z N 0 ...... Cl ...... l> co o o~ co (f) °< ED (f) C m m r- ::I: -I m c; :E WEIGHT LEEDS GIRLS 60 20 10 11 12 40 30 20 10 -;--- I -2 -1 o +1 +2 AGE OF PHV +4 +5 TIME IN YEARS Fig.

OO ~; 2 ~ 0" , '0 , 0.... ""0.. " '0... 50 ""025 --------------------------------~---- ---010 -1 1-__ ~~~~ ___ L_ _ 10 ~ _ _L_~_ __ L_ _~_ _~~_ _~_ __ L_ _~_ _~~_ __L~ 11 12 13 14 15 16 17 18 AGE IN YEARS 10 / (b) / /0 ...... o / 8 I I / / 0 / 0 ...... "'0, D.... ~.... '0...... 6 0"" 0... 4 ...... 0--0.... ........ ,,0/ / 0.... cI ~. J 2 o--V~~.... . 0 --0-0-- 0.... , , '0,... 0 / .... _ ---------------------------------~---"'010 4---L-~_4~~----3~~----2~~----~1--~--0L-~~-+~1---L--+~2---L--+~3---L~+4 AGE OF PHV Fig.

0, 3 o~o ~ II ,I I' I~ \ \ \ 2 ~ II II II 1 ~' \ \~ o ~," --------'"""":"'---------4 -3 -2 -1 0 +1 AGE OF PHV +2 +3 --------------~-- +4 -4 -3 TIME IN YEARS -2 -1 0 +1 AGE OF PHV +2 +3 +4 Fig. 10 Median values for sitting height velocity and sub ischial leg length velocity comparing Leeds boys and girls. 49 SPAN LEEDS BOYS em 180 (a) 170 160 150 140 130 AGE IN YEARS 11 12 13 -3 -2 -1 14 15 16 17 18 180 (b) 170 160 150 140 -4 o AGE OF PHV Fig. 11 Span centiles for Leeds boys. 50 +4 TIME IN YEARS SPAN LEEDS GIRLS em 180 170 - 120 170 120 (a) 10 11 16 12 17 AGE IN YEARS (b) -2 o AGE OF PHV TIME IN YEARS .

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