Quadriceps femoris activation patterns. Detailed analysis during isokinetic leg extension (EMG interference mapping)

Anders C.; Froebel A.; Marx F.Scholle H-C.

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Quadriceps femoris activation patterns. Detailed analysis during isokinetic leg extension (EMG interference mapping)

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Background. After knee joint injuries, joint function disturbances often persist which might be caused by disturbed neuromuscular interaction. Methods. We investigated 31 healthy subjects (16 female, 15 male). Surface EMG of the quadriceps muscle was taken using EMG interference mapping during isokinetic extension movements, with maximum effort at angle velocities of 60 degrees and 180 degrees per second. Results. Activation patterns of the quadriceps femoris were influenced by gender. Women showed maximum activity in the region of the vastus medialis and rectus femoris muscles, whereas in men the maximum activity was always located over the vastus medialis region. With increasing extension the maximum activation moved distally in the women's group, whereas men developed relevant activity levels in their rectus femoris muscle. Conclusions. Gender-related evaluation of quadriceps activation patterns appears to be necessary.

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《manuelle medizin》 |2008年第5期|293-298|共6页
作者
Anders C.; Froebel A.; Marx F.Scholle H-C.;
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Univ Klinikum Jena;

HELIOS Vogtland Klinikum;

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Quadriceps femoris muscle; Surface EMG; Isokinetic; Gender differences;

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Quadriceps femoris activation patterns. Detailed analysis during isokinetic leg extension (EMG interference mapping)

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