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KMID : 0361419930170040534
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Journal of Korean Academy of Rehabilitation Medicine
1993 Volume.17 No. 4 p.534 ~ p.539
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Relationship between Muscle Fiber conduction Velocity and Muscle Strength
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Abstract
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This study is aimed to derive the normal values of muscle fiber conduction velocity(MFCV) and to see correlations between MFCV and muscle strength. 20 healthy males between the ages 23 and 32 years(a total of 40 limbs) were put on exercises
performed
once every day utilizing the Cybex 350 dynanometer for 6 days.
The peak torque of elbow flexor and MFCV were measured on the lst and 6th day. Measurements of MFCV were done employing the invasive method using two monopolar needles on the short head of biceps brachii. After determining the point 2.5 cm distal
to the
motor point(point A) and the point 7.5com distal to the motor point(point B), electrical stimulation was given at point B and the muscle fiber potentials were recorded at point A.
@ES The results were as follows:
1) The average value of MFCV was 4.41±0.40m sec and no significant differences between dominant limb and nondominant limb(p>0.05).
2) Peak torques were significantly increased(p<0.05) but MFCV were not significantly increased after exercise(p>0.05) compared to that of before exercise.
3) Correlations between MFCV and peak torque were not significant(p>0.05).
4) Correlations between circumference of upper arm, length and body mass index(BMI), and MFCV were not significant(p>0.05).
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KEYWORD
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