A Three-dimensional ultrasonic system for posture measurement

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      <subfield code="a">A time-efficient, cost-effective, and accurate system has been developed for measuring static three-dimensional joint coordinates in the laboratory. In order to provide a three-dimensional description of body posture, it is necessary to measure the location of major joints and the angles between adjacent body segments. Several approaches for measuring three-dimensional posture have been previously developed, including goniometry, photogrammetry, optoelectric analysis, video analysis, optomechanic analysis, and sonic analysis. These methods are discussed below</subfield>
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      <subfield code="a">Ergonomics</subfield>
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      <subfield code="t">Ergonomics</subfield>
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      <subfield code="g">Vol. 33, nº 9, September 1990 ; p. 1089-1114</subfield>
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