  For researchers in electromyography (EMG), and similar biosginals, signal
processing is naturally an essential topic. There are a number of excellent
tools available. To these one may add the freely available open source
statistical software package R, which is in fact also a programming language.
It is becoming one the standard tools for scientists to visualize and process
data. A large number of additional packages are continually contributed by an
active community. The purpose of this paper is to alert biomechanics
researchers to the usefulness of this versatile tool. We discuss a set of basic
signal processing methods and their realizations with R which are provided in
the supplementary material. The data used in the examples are EMG and force
plate data acquired during a quiet standing test.
