Kamon N
Second Department of Internal Medicine, School of Medicine, Kanazawa University, Japan.
J Occup Med. 1994 Sep;36(9):989-96.
The need for standardization and validation of quantitative tests for vibratory sensitivity has been increasingly recognized. Conventional vibrometers have been of limited use for the assessment of vibratory perception threshold (VPT) due to wide intraindividual variations. This study describes the determination of VPT for the medial malleolus (MM), the styloid process of the radius (SPR), and the pulp of the index finger (PIF) in normal subjects, using a new vibrometer, the TM-31A. This apparatus expresses results in terms of actual vibration amplitude and has a feedback mechanism that avoids damping of the stimulator in tissue. Repeated VPT measurements revealed good reproducibility of the test. The intraday and day-to-day variations of VPT were fairly small. VPT was found to differ significantly among sites (MM > SPR > PIF). The distribution in MM was substantially log-normal, whereas the SPR and PIF were normal. VPT values on each site correlated with advancing age, especially on the MM. It is concluded that TM-31A provides a reliable and valid assessment of VPT and contributes to the standardization of VPT testing.
振动觉敏感性定量测试的标准化和验证需求已得到越来越多的认可。由于个体内部差异较大，传统振动计在评估振动觉阈值（VPT）方面的用途有限。本研究描述了使用新型振动计TM - 31A测定正常受试者内踝（MM）、桡骨茎突（SPR）和食指指腹（PIF）的VPT。该仪器以实际振动幅度表示结果，并具有反馈机制，可避免刺激器在组织中衰减。重复的VPT测量显示该测试具有良好的可重复性。VPT的日内和日间变化相当小。发现不同部位的VPT存在显著差异（MM > SPR > PIF）。MM部位的分布基本呈对数正态分布，而SPR和PIF部位呈正态分布。每个部位的VPT值与年龄增长相关，尤其是在MM部位。结论是，TM - 31A为VPT提供了可靠有效的评估，并有助于VPT测试的标准化。
