Lower limb joint sense, muscle strength and postural stability in adolescent taekwondo practitioners

Shirley Siu Ming FONG, Wai Nam William TSANG, Gabriel Yin Fat NG

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9 Citations (Scopus)

Abstract

Background: Taekwondo (TKD) is a popular combat sport renowned for its kicking techniques. With repeated practice, it may enhance the sensorimotor performance and balance of its practitioners. Research question: This study aimed (1) to compare the effects of short-term and long-term TKD training on the lower limb joint proprioception, muscle strength and balance performance of adolescents, and (2) to explore the relationships among these three outcome measures. Type of study: Observational study. Methods: Thirty-one adolescents including long-term (n=11), short-term (n=10), and nonpractitioners (n=10) of TKD participated in the study. The knee joint position sense, isokinetic strength of the quadriceps and hamstrings, and sway in prolonged single-leg standing were measured. Results: Long-term TKD practitioners made significantly smaller errors in the knee joint repositioning test than the control group (p<0.01). No significant difference was found in the body-weight-adjusted isokinetic peak torque of the quadriceps (p>0.01) or hamstrings (p>0.01) among the three groups. Both short- and longterm TKD practitioners swayed significantly slower than control participants while standing on one leg (p<0.01). The accuracy of knee joint angle repositioning was significantly correlated with sway velocity (r = 0.499, p<0.01). Conclusions: More than one year of TKD training can improve single-leg standing balance. The better postural stability demonstrated by long-term TKD practitioners may be associated with better knee joint position sense rather than knee muscle strength. Physiotherapists may therefore suggest long-term TKD exercise for adolescents to improve balance. Copyright © 2013 International Federation of Sports Medicine.
Original languageEnglish
Pages (from-to)44-52
JournalInternational SportMed Journal
Volume14
Issue number2
Publication statusPublished - Jan 2013

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Muscle Strength
Knee Joint
Proprioception
Lower Extremity
Joints
Leg
Physical Therapists
Sports
Observational Studies
Knee
Outcome Assessment (Health Care)
Exercise
Control Groups
Research

Citation

Fong, S. S. M., Tsang, W. W. N., & Ng, G. Y. F. (2013). Lower limb joint sense, muscle strength and postural stability in adolescent taekwondo practitioners. International SportMed Journal, 14(2), 44-52.

Keywords

  • Sport
  • Postural balance
  • Muscle strength
  • Proprioception
  • Teenagers