Validation and test report: Non-invasive muscle activity and metabolism monitor

Publikation: Bog/antologi/afhandling/rapportRapportForskning

The purpose of the present report is to evaluate Near Infra-Red (NIRS) & Electromyography (EMG) technologies for muscle monitoring. In the original proposal it was suggested that an index of muscle metabolism could be developed; an index that could correlate NIRS-measurements with muscle work. As a consequence of extensive movement artefacts seen during dynamic contractions, the following validation and test report consists of a report that investigates the physiological responses to a static contraction in a standing and a supine position. Eight subjects performed static contractions of the ankle extensors in a standing and a supine position. Blood pressure, heart rate, EMG and NIRS was sampled during the contraction. The results of main interest were a significantly larger initial decline of muscle oxygen concentration and a steeper negative slope of the frequency content in the EMG signals; both in the supine position. These results indicate that the fatigue development is more pronounced in a supine position, most likely due to changes in muscle blood flow. This could be of relevance when training in zero-gravity environments, which to some extent can be modelled by placing the subjects in a supine position.
Antal sider12
Rekvirerende organEuropean Space Agency
StatusUdgivet - 15 okt. 2012
SerietitelEuropean Space Agency Contract Report
NummerESA 22861/09/NL/VS

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