An apparatus which measures the tension developed in the calf muscles of the human leg is described. It consists of a framework, into which the leg of the seated subject is clamped, which supports a platform rotated by the foot. The pressure on this platform and hence the force of contraction of the calf muscles, is recorded by a hydraulic system. Reference is made to some of the uses of this apparatus.
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Lippold et al. (1952) studied this question.