The Effect of sustained spinal load on intra-abdominal pressure and EMG characteristics of trunk muscles

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      <subfield code="a">The Effect of sustained spinal load on intra-abdominal pressure and EMG characteristics of trunk muscles</subfield>
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      <subfield code="a">Foorteen young male students and 12 young female students held 9,07 kg and 6,8 kg, respectively, at their three-quarters horizontal reach distance in upright  and stooping postures for a period of 5 min. The EMGs were processed in magnitude and time domains to determine muscle fatigue. Through the data obtained it was seen that the intra-abdominal pressure did not follow or reflect either the spinal load or the muscle activity. Based on the arguments presented, it was concluded that the intra-abdominal pressure does not appear to have a role of relieving the spine of some of its load. Instead, it is suggested that it is a dependent variable manifesting itself when mechanisms for spinal stability are evoked to overcome large voluntary and inertial loads</subfield>
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      <subfield code="d">London [etc.]</subfield>
      <subfield code="g">Vol. 40, nº 12,  December 1997 ; p. 1312-1334</subfield>
      <subfield code="t">Ergonomics</subfield>
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