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additional vibrations to the Soldiers due to the vibra- 12. Krajnak K, Riley DA, Wu J, et al. Frequency-dependent
tions of the engine or rotor blades. Therefore, exposure effects of vibration on physiological systems: experiments
to vibration and frequency of vibration during operations with animals and other human surrogates. Ind Health.
might be increased, which might increase the risk of kin- 2012;50:343–353.
esthetic illusions and coordinative disturbances. But fur- 13. Cordo P, Gurfinkel VS, Bevan L, Kerr GK. Propriocep-
tive consequences of tendon vibration during movement.
ther studies are needed to evaluate this assumption.
J Neurophysiol. 1995;74:1675–1688.
14. Bock O, Vercher J-L, Gauthier G. Wrist vibration affects
Conclusions the production of finely graded forces. Aviat Space Envi-
ron Med. 2005;76:435–440.
Because potential physiological problems are associated 15. Rogers DK, Bendrups AP, McDonald ML. Disturbed pro-
with the exposure to vibration, consideration should be prioception following a period of muscle vibrations in hu-
given to the vibration frequency during fast-roping ma- mans. Neurosci Lett. 1985;57:147–152.
neuvers. Considering the negative effects reported in the 16. Futatsuka M, Pyykkö I, Färkkilä M, et al. Blood pressure,
literature, the use of ropes that produce vibrations of flow, and peripheral resistance of digital arteries in vibra-
about 20 Hz seems to be questionable. tion syndrome. Br J Ind Med. 1983;40:434–441.
17. Gauthier GM, Roll JP, Martin B, Harlay F. Effects of whole-
body vibrations on sensory motor system performance in
Disclosures man. Aviat Space Environ Med. 1981;52:473–479.
18. Seidel H. Myoelectric reactions to ultra-low frequency
The authors have nothing to disclose. The study was and low-frequency whole body vibration. Eur J Appl
supported by the German Research Centre of Elite Physiol Occup Physiol. 1988;57:558–562.
Sport, the German Sport University Cologne and the 19. Wasserman DE, Taylor W. Lessons from hand-arm vibra-
Bureau for Education, Training and Personnel of North tion syndrome research. Am J Ind Med. 1991;19:539–546.
Rhine-Westphalia Police. 20. Kasai T, Kawanishi M, Yahagi S. The effects of wrist
muscle vibration on human voluntary elbow flexion-
extension movements. Exp Brain Res. 1992;90:217–220.
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