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Use of a catchlike property of human skeletal muscle to reduce fatigue

✍ Scribed by Dr.; PhD; PT Stuart A. Binder-Macleod; BS; PT Charles B. Barker III

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
776 KB
Volume
14
Category
Article
ISSN
0148-639X

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✦ Synopsis

This study compared the force output produced by variable frequency, short-duration trains (VFTs) of electrical pulses with the forces produced by constant frequency, short-duration trains (CFTs). Human quadriceps femoris muscle was stimulated with a 300-msec train of pulses once every second for 180 seconds. Each subject (n = 12) participated in 4 randomly assigned experimental sessions. During 3 sessions, a CFT of 80, 40 or 20 pps was used. During a fourth session, a VFT, which consisted of all 3 of the above frequencies, was used. The force at 100 msec, average force of each contraction and peak force were calculated for every 30th contraction. By the 90th contraction, the force at 100 msec and the average force were significantly greater for the VFT than for each CFT. Thus, the VFT, by using a catchlike property, may provide significant advantages over any CFT when using electrical stimulation for functional electrical stimulation.

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