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Muscle tissue drives nearly all movement in the animal kingdom, providingpower, mobility, and dexterity. Technologies for measuring muscle tissuemotion, such as sonomicrometry, fluoromicrometry, and ultrasound, havesignificantly advanced our understanding of biomechanics. Yet, the field lacksthe ability to monitor muscle tissue motion for animal behavior outside thelab. Towards addressing this issue, we previously introduced magnetomicrometry,a method that uses magnetic beads to wirelessly monitor muscle tissue lengthchanges, and we validated magnetomicrometry via tightly-controlled in situtesting. In this study we validate the accuracy of magnetomicrometry againstfluoromicrometry during untethered running in an in vivo turkey model. Wedemonstrate real-time muscle tissue length tracking of the freely-movingturkeys executing various motor activities, including ramp ascent and descent,vertical ascent and descent, and free roaming movement. Given the demonstratedcapacity of magnetomicrometry to track muscle movement in untethered animals,we feel that this technique will enable new scientific explorations and animproved understanding of muscle function. -- -- El tejido muscular es el motorde casi todos los movimientos del reino animal, ya que proporciona fuerza,movilidad y destreza. Las tecnolog\'ias para medir el movimiento del tejidomuscular, como la sonomicrometr\'ia, la fluoromicrometr\'ia y el ultrasonido,han avanzado considerablemente la comprensi\'on de la biomec\'anica. Sinembargo, este campo carece de la capacidad de rastrear el movimiento del tejidomuscular en el comportamiento animal fuera del laboratorio. Para abordar esteproblema, presentamos previamente la magnetomicrometr\'ia, un m\'etodo queutiliza peque\~nos imanes para rastrear de forma inal\'ambrica los cambios delongitud del tejido muscular, y validamos la magnetomicrometr\'ia mediantepruebas estrechamente controladas in situ. En este estudio validamos laprecisi\'on de la magnetomicrometr\'ia en comparaci\'on con lafluoromicrometr\'ia usando un modelo de pavo in vivo mientras corre libremente.Demostramos el rastreo en tiempo real de la longitud del tejido muscular de lospavos que se mueven libremente ejecutando varias actividades motoras,incluyendo el ascenso y el descenso en rampa, el ascenso y el descensovertical, y el movimiento libre. Dada la capacidad demostrada de lamagnetomicrometr\'ia para rastrear el movimiento muscular en animales en uncontexto m\'ovil, creemos que esta t\'ecnica permitir\'a nuevas exploracionescient\'ificas y una mejor comprensi\'on de la funci\'on muscular.

frontiers in bioengineering and biotechnology

Rastreo muscular m\'ovil usando magnetomicrometr\'ia -- traducci\'on al  espa\~nol del articulo "Untethered Muscle Tracking Using Magnetomicrometry"  por el autor Cameron R. Taylor