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PubMed · 9001929

The upper extremity attenuates intermediate frequency vibrations.

M H Pope·M Magnusson·T Hansson
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Abstract

Vibration is related to reports of low back pain; however the biomechanics of vibration transmission through the hand-arm system has not been previously studied. Vibration was recorded on an accelerometer mounted to a pin percutaneously imbedded in the spinous process of L4 of five human subjects. The energy was applied through an impact via a pendulum. The subjects adopted an erect, relaxed or bent knee posture. The first resonance was 4-6 Hz and the second at 9-14 Hz. With the knee bent, the signal was almost completely attenuated. If the impact was applied through a handle and the hand-arm system there was complete attenuation.

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AccelerationAdultAnalog-Digital ConversionAnalysis of VarianceArmBiomechanical PhenomenaEnergy TransferFemaleHandHand StrengthHumansKnee JointLegLow Back PainLumbar VertebraeMaleOccupational DiseasesPostureSignal Processing, Computer-AssistedTransducersVibrationJournal ArticleResearch Support, Non-U.S. Gov't

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M H Pope, M Magnusson, T Hansson. 1997. The upper extremity attenuates intermediate frequency vibrations.. https://doi.org/10.1016/s0021-9290(96)00123-6

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