The twitch interpolation technique is commonly employed to assess the completeness of skeletal muscle activation during voluntary contractions. Early applications of twitch interpolation suggested that healthy human subjects could fully activate most of the skeletal muscles to which the technique had been applied. More recently, however, highly sensitive twitch interpolation has revealed that even healthy adults routinely fail to fully activate a number of skeletal muscles despite apparently maximal effort. Unfortunately, some disagreement exists as to how the results of twitch interpolation should be employed to quantify voluntary activation. The negative linear relationship between evoked twitch force and voluntary force that has been observed by some researchers implies that voluntary activation can be quantified by scaling a single interpolated twitch to a control twitch evoked in relaxed muscle.
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Otto Von Guericke Univ, Dept Orthoped, Neuromuscular Res Grp, D-39120 Magdeburg, GermanyOtto Von Guericke Univ, Dept Orthoped, Neuromuscular Res Grp, D-39120 Magdeburg, Germany
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Schulthess Clin, Neuromuscular Res Lab, Zurich, SwitzerlandSchulthess Clin, Neuromuscular Res Lab, Zurich, Switzerland
Maffiuletti, Nicola Angelo
Barbero, Marco
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Univ Appl Sci & Arts Southern Switzerland, Rehabil Res Lab 2rLab, Dept Business Econ Hlth & Social Care, Manno, SwitzerlandSchulthess Clin, Neuromuscular Res Lab, Zurich, Switzerland
Barbero, Marco
Cescon, Corrado
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Univ Appl Sci & Arts Southern Switzerland, Rehabil Res Lab 2rLab, Dept Business Econ Hlth & Social Care, Manno, SwitzerlandSchulthess Clin, Neuromuscular Res Lab, Zurich, Switzerland
Cescon, Corrado
Clijsen, Ron
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Univ Appl Sci & Arts Southern Switzerland, SUPSI, Dept Business Econ Hlth & Social Care, Landquart, Switzerland
Thim Van Der Laan AG, Univ Coll Physiotherapy, Landquart, SwitzerlandSchulthess Clin, Neuromuscular Res Lab, Zurich, Switzerland
Clijsen, Ron
Beretta-Piccoli, Matteo
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Univ Appl Sci & Arts Southern Switzerland, Rehabil Res Lab 2rLab, Dept Business Econ Hlth & Social Care, Manno, SwitzerlandSchulthess Clin, Neuromuscular Res Lab, Zurich, Switzerland
Beretta-Piccoli, Matteo
Schneebeli, Alessandro
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Univ Appl Sci & Arts Southern Switzerland, Rehabil Res Lab 2rLab, Dept Business Econ Hlth & Social Care, Manno, SwitzerlandSchulthess Clin, Neuromuscular Res Lab, Zurich, Switzerland
Schneebeli, Alessandro
Preiss, Stefan
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Schulthess Clin, Neuromuscular Res Lab, Zurich, SwitzerlandSchulthess Clin, Neuromuscular Res Lab, Zurich, Switzerland
Preiss, Stefan
Togninalli, Danilo
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Ars Med Clin, Gravesano, SwitzerlandSchulthess Clin, Neuromuscular Res Lab, Zurich, Switzerland