Influence of Anthropometric Variables on Median Nerve Conduction

J Korean Assoc EMG Electrodiagn Med 1999;1(1):83-88.
Published online January 1, 1999.

Abstract

Objectives : To elucidate the influence of various anthropometric variables on median motor and sensory nerve conduction Methods : Eighty nine of normal healthy subjects with 24 years of mean age participated in median motor and antidromic sensory nerve conduction studies. Parameters including distal latency, distal amplitude and conduction velocities were obtained in motor and sensory conductions of both hands. And various parameters such as sex, height, weight, wrist and index finger dimensions, and opposition powers are obtained in both hands. Thereafter, we analyzed the influence of the later on the former. Results : Distal amplitudes and areas of median sensory nerve action potentials(SNAPs) were larger in women than in men. Distal amplitudes were also affected by weight, body mass index(BMI) and circumferences of the wrists and index fingers. Circumferences of the latter especially did not only affect distal amplitudes of SNAPs but also did distal latencies and conduction times from the midpalm to active electrodes. Conclusion : The data of the median sensory conduction should be carefully interpreted considering anthropometric variables such as sex, circumferences of the wrist and the digits with the active electrode.

Key Words: Median nerve, Nerve conduction stedy, Anthropometric variable, Sex

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