Scientists have developed a low-cost and non-invasive method of measuring the severity of muscle injuries in footballers. The advancement is expected to help players return to action faster. <br/>'<br/>Researchers from Polytechnic University of Catalunya in Spain developed the new technique, called localised bioimpedance measurement. The researchers said it is often difficult to get a clear idea of when athletes can be fit again because the 'muscle gap' – or muscle damage – cannot easily be measured by current methods. <br/>'<br/>The technique works by sending a low intensity alternating current through healthy muscle tissue and then<br/>comparing that with readings from injured tissue. Passing a current through the affected muscles gives a clearer picture of soft tissue damage than ultrasound or MRI scans.