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Physiological and subjective measures of workload when shovelling with a conventional and two-handled ("leveled") shovel

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      <subfield code="a">Physiological and subjective measures of workload when shovelling with a conventional and two-handled ("leveled") shovel</subfield>
      <subfield code="c">R.S. Bridger... [et al.]</subfield>
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      <subfield code="a">Previous studies have suggested that the two-handled (levered) shovel is advantageous over the conventional spade from a biomechanical point of view. The aim of this experiment was to determine whether less energy was consumed while shovelling a load of sand with this shovel compared to a conventional tool</subfield>
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      <subfield code="g">Vol. 40, nº 11, November 1997 ; p. 1212-1219</subfield>
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