Archives of Physical Medicine and Rehabilitation
Volume 88, Issue 11 , Pages 1446-1451 , November 2007

Normalizing Lower-Extremity Strength Data for Children Without Disability Using Allometric Scaling

  • Tishya A. Wren, PhD

      Affiliations

    • Children’s Orthopaedic Center, Children’s Hospital Los Angeles, Los Angeles, CA
    • Departments of Orthopaedics, Radiology, and Biomedical Engineering, University of Southern California, Los Angeles, CA
    • Corresponding Author InformationReprint requests to Tishya A. Wren, PhD, 4650 Sunset Blvd #69, Los Angeles, CA 90027
  • ,
  • Jack R. Engsberg, PhD

      Affiliations

    • Human Performance Laboratory, Barnes-Jewish Hospital, St. Louis, MO
    • Department of Orthopaedic Surgery, Washington University School of Medicine, St. Louis, MO.

References 

  1. Ahmad CS, Clark AM, Heilmann N, Schoeb JS, Gardner TR, Levine WN. Effect of gender and maturity on quadriceps-to-hamstring strength ratio and anterior cruciate ligament laxity. Am J Sports Med. 2006;34:370–374
  2. Eek MN, Kroksmark AK, Beckung E. Isometric muscle torque in children 5 to 15 years of age: normative data. Arch Phys Med Rehabil. 2006;87:1091–1099
  3. Ingle L, Sleap M, Tolfrey K. The effect of a complex training and detraining programme on selected strength and power variables in early pubertal boys. J Sports Sci. 2006;24:987–997
  4. Jones MA, Hitchen PJ, Stratton G. The importance of considering biological maturity when assessing physical fitness measures in girls and boys aged 10 to 16 years. Ann Hum Biol. 2000;27:57–65
  5. Kanehisa H, Kuno S, Katsuta S, Fukunaga T. A 2-year follow-up study on muscle size and dynamic strength in teenage tennis players. Scand J Med Sci Sports. 2006;16:93–101
  6. Sinaki M, Limburg PJ, Wollan PC, Rogers JW, Murtaugh PA. Correlation of trunk muscle strength with age in children 5 to 18 years old. Mayo Clin Proc. 1996;71:1047–1054
  7. Weltman A, Janney C, Rians CB, et al. The effects of hydraulic resistance strength training in pre-pubertal males. Med Sci Sports Exerc. 1986;18:629–638
  8. Engsberg JR, Olree KS, Ross SA, Park TS. Maximum effort resultant knee joint torques in children with spastic diplegia. J Appl Biomech. 1998;14:52–61
  9. Engsberg JR, Ross SA, Olree KS, Park TS. Ankle spasticity and strength in children with spastic diplegic cerebral palsy. Dev Med Child Neurol. 2000;42:42–47
  10. Engsberg JR, Ross SA, Park TS. Hip spasticity and strength in children with spastic diplegia cerebral palsy. J Appl Biomech. 2000;16:221–233
  11. Jaric S. Muscle strength testing: use of normalisation for body size. Sports Med. 2002;32:615–631
  12. Damiano DL, Kelly LE, Vaughn CL. Effects of quadriceps femoris muscle strengthening on crouch gait in children with spastic diplegia. Phys Ther. 1995;75:658–667
  13. MacPhail HE, Kramer JF. Effect of isokinetic strength-training on functional ability and walking efficiency in adolescents with cerebral palsy. Dev Med Child Neurol. 1995;37:763–775
  14. Nevill AM, Bate S, Holder RL. Modeling physiological and anthropometric variables known to vary with body size and other confounding variables. Am J Phys Anthropol. 2005;(Suppl 41):141–153
  15. Castle ME, Reyman TA, Schneider M. Pathology of spastic muscle in cerebral palsy. Clin Orthop Relat Res. 1979;(142):223–232July-Aug
  16. Friden J, Lieber RL. Spastic muscle cells are shorter and stiffer than normal cells. Muscle Nerve. 2003;27:157–164
  17. Tardieu C, Huet de la Tour E, Bret MD, Tardieu G. Muscle hypoextensibility in children with cerebral palsy: I. Clinical and experimental observations. Arch Phys Med Rehabil. 1982;63:97–102
  18. Tardieu G, Tardieu C, Colbeau-Justin P, Lespargot A. Muscle hypoextensibility in children with cerebral palsy: II. Therapeutic implications. Arch Phys Med Rehabil. 1982;63:103–107
  19. Engsberg JR, Ross SA, Collins DR, Park TS. Effect of selective dorsal rhizotomy in the treatment of children with cerebral palsy. J Neurosurg. 2006;105(1 Suppl):8–15
  20. Engsberg JR, Ross SA, Park TS. Changes in ankle spasticity and strength following selective dorsal rhizotomy and physical therapy for spastic cerebral palsy. J Neurosurg. 1999;91:727–732
  21. Engsberg JR, Ross SA, Wagner JM, Park TS. Changes in hip spasticity and strength following selective dorsal rhizotomy and physical therapy for spastic cerebral palsy. Dev Med Child Neurol. 2002;44:220–226
  22. Buckon CE, Thomas SS, Harris GE, Piatt JH, Aiona MD, Sussman MD. Objective measurement of muscle strength in children with spastic diplegia after selective dorsal rhizotomy. Arch Phys Med Rehabil. 2002;83:454–460
  23. Ramos E, Frontera WR, Llopart A, Feliciano D. Muscle strength and hormonal levels in adolescents: gender related differences. Int J Sports Med. 1998;19:526–531

 Supported by the National Institute for Neurological Disorders and Stroke, National Institutes of Health (grant no. R01 NS35830).

 No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the author(s) or upon any organization with which the author(s) is/are associated.

PII: S0003-9993(07)01289-0

doi: 10.1016/j.apmr.2007.06.775

Archives of Physical Medicine and Rehabilitation
Volume 88, Issue 11 , Pages 1446-1451 , November 2007