Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (24): 4481-4484.doi: 10.3969/j.issn.1673-8225.2011.24.027

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Isokinetic test of flexor and extensor strength in primary student knees

Ji Hua-juan, Wei Meng-tian, Wang Li-xia   

  1. Department of Physical Education, Shijiazhuang University, Shijiazhuang  050035, Hebei Province, China
  • Received:2011-01-07 Revised:2011-01-20 Online:2011-06-11 Published:2011-06-11
  • About author:Ji Hua-juan★, Master, Associate professor, Department of Physical Education, Shijiazhuang University, Shijiazhuang 050035, Hebei Province, China jihj70@126.com
  • Supported by:

    the Key Subjects for Educational Science in Hebei Province During “Eleventh Five-year” Plan, No. 06120077*

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Abstract:

BACKGROUND: Previous evaluation for lower limb strength in primary students are limited for physical quality measurement, such as standing long jump or jump touching, which lack of quantitative studies. 
OBJECTIVE: To learn the characteristic of development in muscle strength in primary students using isokinetic testing system.
METHODS: The flexion and extension strength of knee joints in 54 healthy primary students aged 9-12 (25 boys and 29 girls) were measured by using Kinitech Isokinetic testing system with 3 angular velocities: 60 (°)/s, 120 (°)/s and 240 (°)/s.
RESULTS AND CONCLUSION: The peak torque (PT) of primary students was decreased with angular velocities increasing; The PT value of left side at speed of 60 (°)/s and 120 (°)/s, and right side at speed of speed of 60(°)/s was lower than that of the extensors in both genders (P < 0.01 or P < 0.05). At the same speed, the PT value of flexor and extensor in left side and flexor in the right side of boys were obviously higher than that of girls at 240 (°)/s (P < 0.01 or P < 0.05).

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