Article Text

Download PDFPDF
Muscle strength in boys of different ages
  1. A. J. McComas1,
  2. R. E. P. Sica2,
  3. F. Petito3
  1. Regional Neurological Centre, Newcastle General Hospital, Newcastle upon Tyne


    Isometric twitch contractions have been studied in extensor hallucis brevis muscles of 32 healthy male subjects aged between 3 and 25 years. The maximum twitch tensions were found to increase gradually with age and then to undergo marked enhancement at puberty. After puberty little further change occurred. In the youngest children examined the twitch contraction times were already within the adult range, though the half-relaxation times were prolonged.

    Statistics from

    Request Permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.


    • 1 Present address: Department of Medicine (Neurology), McMaster University Medical Centre, Hamilton, Ontario, Canada.

    • 2 Present address: Servicio Neurologia, Hospital Ramos Mejia, Buenos Aires, Argentina.

    • 3 Present address: Department of Neurology, Walter Reed Army Hospital, Washington, U.S.A.