ATP economy of force maintenance in human tibialis anterior muscle

Article Abstract:

A study is conducted to investigate adenosine triphosphate (ATP) economy of force maintenance in the human tibialis anterior muscle during 60 s of anaerobic voluntary contraction at 50% of maximum voluntary contraction. The unchanged ATP economy of force maintenance during the voluntary contraction could be due to an increase in the ATP economy of contracting muscle fibers offsetting the effects of increased temperature and low ATP economy of Type II fibers.

Knee, Sports medicine, Adenosine triphosphatase, ATPases, Knee joint

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Glycogen determination using periodic acid-Schiff: Artifact of muscle preparation

Article Abstract:

The thawing step in the staining of muscle glycogen with periodic acid-Stiff (PAS) results in a systematic error that is independent of muscle fiber type and muscle physiological state. The findings in rats suggested that the muscle damage associated with freeze-thawing is responsible for this stimulation of glycogenolysis.

Glycogen metabolism, Glycogenolysis, Histochemistry

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Muscle contraction-induced limb blood flow variability during dynamic knee extensor

Article Abstract:

The reduction in muscle contraction-induced variability of limb femoral arterial blood flow with longer sampling periods is assessed. The dissimilarity between the contraction frequencies may be due to contraction-relaxation-induced muscle force.

Blood flow

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