Electromyographic Analyses of Trunk Musculature after Stroke: An Integrative Review.

Background: Observational and intervention studies examining trunk electromyographic (EMG) activity following stroke are underpowered and fail criteria for systematic reviews of randomized control trials. Objective: To systematically evaluate and summarize evidence about trunk muscle activation after stroke during ADL and with diagnostic and therapeutic interventions.

Methods: Search databases were Medline Complete, CINAHL and Health Sources: Nursing Academic Edition.

Justifying instrumental techniques of analytical chemistry.

In this paper, we argue that the foundations of chemistry rely as much on the methods of measurement as they do on categories of chemical substance. To some degree, chemists perform the work of knowledge engineering: designing complex systems for the efficient retrieval of information. Indeed, in some cases, methods of instrumental detection move to the forefront of attention.