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Wolverhampton Intellectual Repository and E-Theses > Research Institutes > Research Institute in Healthcare Science > Sport, Exercise and Health Research Group > Hormonal factors in the development of differences in strength between boys and girls during adolescence: a longitudinal study.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/66083
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Title: Hormonal factors in the development of differences in strength between boys and girls during adolescence: a longitudinal study.
Authors: Round, J. M.
Jones, David A.
Honour, J. W.
Nevill, Alan M.
Citation: Annals of Human Biology, 26(1): 49-62
Publisher: Taylor & Francis for the Society for the Study of Human Biology
Journal: Annals of Human Biology
Issue Date: 1999
URI: http://hdl.handle.net/2436/66083
PubMed ID: 9974083
Additional Links: http://www.ingentaconnect.com/content/apl/tahb/1999/00000026/00000001/art00005
Abstract: The development of elbow flexor (biceps) and knee extensor (quadriceps) strength has been followed in a mixed longitudinal study of 50 boys and 50 girls from the age of 8 to 17 years. Sex differences in strength emerged at the time of peak height velocity and were especially marked for the biceps. Data for individual children were aligned to the time of peak height velocity and associations between strength, height, weight and circulating testosterone were investigated using multi-level modelling. The results show that, for girls, quadriceps strength is proportional to height and weight while for boys there is an additional factor which can be fully attributed to increasing levels of testosterone. Testosterone is important in explaining differences in biceps strength between the sexes but an additional factor is also required. It is suggested that, in addition to a direct effect on muscle, testosterone could have a second indirect action on biceps strength by promoting growth in length of the humerus as part of the general development of the male upper limb girdle.
Type: Article
Language: en
Keywords: Muscle Strength
Muscular system
Sports Medicine
Knee
Elbow
MeSH: Adolescent
Alkaline Phosphatase
Child
Estradiol
Female
Hormones
Humans
Insulin-Like Growth Factor I
Longitudinal Studies
Male
Muscle Contraction
Testosterone
ISSN: 0301-4460
Appears in Collections: Sport, Exercise and Health Research Group
Learning and Teaching in Sport, Exercise and Performance

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