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Related Experiment Videos

Adolescent growth is not associated with changes in flexibility.

D Feldman1, I Shrier, M Rossignol

  • 1Centre for Clinical Epidemiology and Community Studies, Sir Mortimer B. Davis-Jewish General Hospital, McGill University, Montreal, Quebec, Canada.

Clinical Journal of Sport Medicine : Official Journal of the Canadian Academy of Sport Medicine
|May 21, 1999
PubMed
Summary

Adolescent growth does not significantly decrease flexibility. Studies show minimal impact of growth spurts on hamstring, lumbar, and trunk muscle flexibility, indicating growth isn't a primary factor in reduced flexibility.

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Area of Science:

  • Sports Medicine
  • Human Physiology
  • Developmental Biology

Background:

  • Adolescent growth is a period of significant physical change.
  • Flexibility is a key component of physical fitness and injury prevention.
  • Previous assumptions suggested growth might negatively impact flexibility.

Purpose of the Study:

  • To investigate the relationship between adolescent growth and changes in musculoskeletal flexibility.
  • To determine if physical growth during adolescence leads to decreased flexibility.

Main Methods:

  • Longitudinal cohort study involving urban high school students.
  • Assessed flexibility of hamstring (popliteal angle), quadriceps (quadriceps angle), lumbar extensors (Schober test), and combined lower extremity-trunk muscles (Sit and Reach test).

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Main Results:

  • No significant association was found between growth and flexibility changes in lumbar flexor, hamstring, or Sit and Reach muscles.
  • A minor decrease in quadriceps muscle flexibility was observed with growth, but with a very low explanatory power (r2adj 0.01-0.06).
  • Growth was determined to play a minimal role in individual flexibility variations.

Conclusions:

  • Adolescent growth is not a causal factor for decreased flexibility during the peripubescent period.
  • Flexibility maintenance during adolescence is likely influenced by factors other than physical growth.