Abstract
THIS is a summary of an analysis of anthropometric measurements and functional performances of a socially homogeneous sample of 40 white South African schoolgirls of thirteen years of age. Of these, 20 were in the pre-menarcheal state (group Mâ), while the other 20 had started to menstruate (group M+). Student's t-test was used to determine significance of differences (see accompanying table).
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References
Cluver, E. H., and Jokl, E., South African J. Med. Sci. (1945).
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Shuttleworth, F. K., âœSexual Maturation and the Physical Growth of Girls Age 6 to 19â, Nat. Res. Council, Washington, D.C. (1937).
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JOKL, E. Menarche, Growth and Physical Efficiency. Nature 157, 195–196 (1946). https://doi.org/10.1038/157195a0
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DOI: https://doi.org/10.1038/157195a0
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