Influence of stimulus cross talk on results of the twitch-interpolation technique at the biceps brachii muscle

✍ Scribed by Friedemann Awiszus; Birger Wahl; Ingmar Meinecke

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 71 KB
• Volume: 20
• Category: Article
• ISSN: 0148-639X
• DOI: 10.1002/(sici)1097-4598(199709)20:9<1187::aid-mus17>3.0.co;2-q

✦ Synopsis

Biceps brachii muscles of five healthy volunteers were tested with a high-resolution twitch-interpolation technique. Parameters of the electrical surface stimulation were varied. It was found that a supramaximal stimulus strength activates both biceps and triceps brachii motor units simultaneously severely affecting twitch-interpolation results. Crosstalk contamination of twitches, however, can be avoided, if submaximal stimuli are used yielding twitch-interpolation results for the biceps-brachii that are similar to those of the quadriceps muscle.