Biosignalsplux Ergo Researcher Kit (8 Sensors)

• Biosignalsplux Ergo Researcher Kit
• Includes 8 advanced sensors of your choice
• 1 Ground Port / 4 Analog Generic Inputs
• Resolution: up to 16-bit / Sampling Rate: up to 4000Hz
• Range: up to ~10m (extendable)
• Battery Life: ~10h streaming

The Biosignalsplux Ergo Researcher Kit (8 Sensors) can provide a reference for the analysis of the relationship between work and required muscular load. Jonsson (1982) described a technique in which the frequency of occurrence of a particular level of EMG is calculated, generating a curve of the probability distribution function of amplitude (APDF). The APDF is the distribution of the muscle contraction levels during a certain observation period. The final results of the APDF processing allows to evaluate the relative intensity of different tasks in a workstation as a whole or even the sequence realized for workers during their turn.

The amplitude probability of a certain level of contraction is the muscle’s electrical activity probability lower or equal than the level of contraction. The amplitude probability of a certain level can be expressed as the time interval where the signal is less or equal than that level. If the electromyographic activity amplitude is expressed in percentage of the MVC’s calculated value, the amplitude probability distribution is related to the contractions during the work day. The contraction level of electromyographic signals, which has an amplitude distribution probability that initiates at a probability P=0 level, indicates the lowest contractile activity that occurred throughout the work period. This corresponds to the basal static of contraction level which is, in most of the cases, zero or quite close to zero, especially in long-term acquisitions. A typical situation of this type of contraction is the interruptions between active periods of work.