The use of an Intensity Matching Technique to Evaluate Human Response to Whole-Body Vibration

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Abstract
Previous whole-body vibration intensity matching experiments were reviewed and some of the different experimental methods and findings discussed. An experiment was conducted to investigate between and within subject variability in such experiments and to determine the effect of varying the frequency of the standard vibration against which other frequencies are matched. Although subjects had only a low confidence in their matches the within subject variability was low and much smaller than between subject variability. As the frequency separation of the 2 vibrations to be matched became greater the subject variability increased. Although only relatively small differences were found between the results obtained with different frequency standards, a 10 Hz sinusoid was to be preferred for future experimentation. The differences found between the responses of individual subjects emphasize the need for a careful consideration of individual differences in human response to whole-body vibration.

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