在人类股四头肌中，肌声电图活动随最大自主等长肌力呈线性增加。

Acoustic myographic activity increases linearly up to maximal voluntary isometric force in the human quadriceps muscle.

作者信息

Stokes M J, Dalton P A

机构信息

Department of Physiotherapy, University of Queensland, Brisbane, Australia.

出版信息

J Neurol Sci. 1991 Feb;101(2):163-7. doi: 10.1016/0022-510x(91)90041-5.

DOI:10.1016/0022-510x(91)90041-5

PMID:2033402

Abstract

Sounds produced during voluntary isometric contractions of the quadriceps muscle were recorded by acoustic myography (AMG) in seven healthy adults. With the subject seated, surface AMG and electromyography (EMG) were recorded over rectus femoris (RF) during isometric contractions, at different levels of maximum voluntary force. The AMG and EMG signals were amplified and integrated (IAMG and IEMG). The relationships between force and IAMG (r = 0.98 +/- 0.01, mean +/- 1 SD) and force and IEMG (r = 0.99 +/- 0) were linear in all subjects. The results for EMG confirm previous reports but those for AMG differ from the relationships reported for other muscles. Physiological and technical explanations are proposed for these differences and the necessity for further validation of the AMG technique is stressed.

摘要

通过声学肌电图（AMG）记录了7名健康成年人股四头肌随意等长收缩时产生的声音。受试者坐着时，在等长收缩过程中，于不同最大随意力水平下，记录股直肌（RF）表面的AMG和肌电图（EMG）。AMG和EMG信号被放大并积分（IAMG和IEMG）。在所有受试者中，力量与IAMG（r = 0.98±0.01，平均值±1标准差）以及力量与IEMG（r = 0.99±0）之间的关系呈线性。EMG的结果证实了先前的报道，但AMG的结果与其他肌肉所报道的关系不同。针对这些差异提出了生理和技术方面的解释，并强调了对AMG技术进行进一步验证的必要性。