Limb-load alarm device for partial-weight-bearing walking exercise

Techniques for measuring weight bearing during standing and walking

“…no hysteresis and no drifting of the signal over a period of 8 h, although no specific data were given on the methodological quality. Miyazaki and Iwakura (1978a) made a limb load alarm device also using two different audio feedback signals. The low frequency tone was activated when the load exceeded a preset lower threshold and was switched off when the load increased to the upper threshold activating the high-frequency tone.…”

“…However, the authors stated that the error due to this was small. In 1986 Miyazaki et al (1986) described a new limb load monitor mentioning the drawbacks of their previous system (Miyazaki and Iwakura, 1978a) in terms of accuracy and ease of setting the threshold load levels. This time they used a capacitive transducer, which resembled an insole and was also attached outside the shoe.…”

Functional Electrical Rehabilitation

“…Endicott et al (1974) stated that the device would be useful to control the walking performance of lower extremity amputees during progressive weight bearing training, since it would help individuals to limit their weight bearing to a prescribed range. Miyazaki and Iwakura (1978) also developed a portable electromechanical system for controlling the limb load exerted by an individual during partial weight bearing walking exercise. Their device measured the limb load with two removable load transducers affixed to the anterior and posterior aspect of the sole of the foot.…”

“…A high frequency audio tone occurred when the limb load exceeded the patient's maximum allowable load. Miyazaki and Iwakura (1978) provided performance data on four patients. The device displayed an accuracy of ± 10% in all stages of the stance phase.…”

Teilbelastung in der Rehabilitation

“…Hälfte der Studien zur Re produzierbarkeit, dass es den Probanden nicht möglich war, die vorgegebene Teil belastung einzuhalten[9,16,18,19,20,28,29,34]. In den Studien zur Thema tik Feedback konnte hingegen in 90% der Fälle die Einhaltung der Teilbelastung von den Probanden durch die Feedbackschu lung verbessert werden[11,13,14,16,17,21,24,25,30,33].…”