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The Effect of sustained spinal load on intra-abdominal pressure and EMG characteristics of trunk muscles
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MAP20071500091
Kumar, Shrawan ‌
The Effect of sustained spinal load on intra-abdominal pressure and EMG characteristics of trunk muscles / Shrawan Kumar
Sumario: 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
En: Ergonomics. - London [etc.]. - Vol. 40, nº 12, December 1997 ; p. 1312-1334
1. Ergonomía ‌. 2. Columna vertebral ‌. 3. Carga de materiales ‌. 4. Electromiografía ‌. 5. Presión ‌. 6. Fatiga ‌. 7. Métodos experimentales ‌. I. Title.