Unstable loads with engineering controls significantly (p < 0.001) reduced trunk muscle activity compared to unstable loads.
Thirty-nine healthy subjects manually lifted asymmetrically in the transverse direction stable loads, unstable loads, and unstable loads with engineering controls.
Workers lifting unstable loads are at greater risk of back injury compared to workers lifting stable loads.
Increased stretch reflex sensitivity also may have influenced tracking performance during interactions with the unstable loads.
The present results are consistent with those reported by Milner [15], who examined the influence of arm posture on the ability to maintain endpoint location during interactions with unstable loads oriented within the horizontal plane.
Engineering controls should be implemented to reduce the risk of injury to workers handling unstable liquid loads.
"What if someone with an unstable mind loaded a gun and drove to Washington?" she writes.
"What if someone with an unstable mind loaded a gun and drove to Washington?
Those found to be HIV positive and placed on treatment (particularly acutely infected patients and patients with unstable viral loads) would require more frequent testing to monitor treatment adherence and provide early warning of the development of possible drug resistance.
Arthrobacter spp. also contribute to the bacterial community in activated sludge of wastewater treatment systems [ 10- 12]; under conditions of unstable organic loading, Arthrobacter sp. and other Gram-positives with a rod-coccus cycle were even found to be prevalent [ 12].
