|
KMID : 0359420050230010030
|
|
Korean Journal of Sports Medicine
2005 Volume.23 No. 1 p.30 ~ p.40
|
|
|
Effects of Isotonic and Isokinetic Exercises of Knee Flexor training on Physical Fitness and Knee Joint Stability in the Students Majoring in Taekwondo
|
|
Chang Myoung-Jei
Chang Wan-Sung
|
|
|
Abstract
|
|
|
|
The purpose of the study was to evaluate the effect of isotonic and isokinetic muscular contraction mode on speed of front kicking and physical fitness in male taekwondoists. The subjects were divided into two groups including isotonic exercise group(ITE)(n=10), and isokinetic exercise group(IKE)(n=8). The subject of the study consisted of 20 male collegiate taekwondoists during 8 week collegiate. They exercised regularly 2hr per day, 4 time per week during 8 week, Among them 1 out lier and 1 injured student were excluded for the data analysis isotonic exercise group performed load exercise by leg curl 2 times per 12 RM 3set, 3 time per week. Isokinetic exercise group conducted hamstring flexors by Cybex770(USA) based on angular speed 180 degree per sec. ITE of side step is significant from 30.30±1.34time to 32.30±1.77time, but remaining physical fitness variable is not significant. The variety of 1RM is significant both right foots IKE and left foots ITE There are no significance of strength level between left foots and right foots. Isokinetic peak torque are significant between right lower limb ITE 60?120?180?240 degree per sec: IKE 60?120 degree per sec and left lower limb IKE 120?240 degree per sec. H/Q ratio is improved generally, especially two group are significant of right lower limb 60, 120 degree per sec, only ITE is significant of 180?240 degree per sec. and two group are significant of left foots 60, 120 degree per sec ITE and 120 IKE. ITE and IKE help the Knee joint stability of taekwondoists. ITE and IKE help the muscle imbalance between non-dominant and dominant to heal up.
|
|
|
KEYWORD
|
|
|
Taekwondo, Knee joint stability, H/Q ratio, isokinetic, isotonic
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|
|