β Scribed by Richard H. Shin; Torpon Vathana; Goetz A. Giessler; Patricia F. Friedrich; Allen T. Bishop; Alexander Y. Shin
No coin nor oath required. For personal study only.
Tetanic force measurements of rat tibialis anterior (TA) muscles have been described, but with a variety of stimulation parameters. This study presents a novel functional method of force measurement of the rat TA muscle and describes the optimization of stimulation parameters. Bilateral TA muscles in 10 male Lewis rats were attached to a force transducer after the corresponding hindlimb was fixed. Preload, stimulus intensity, duration, and frequency were optimized for each individual muscle and the isometric maximal tetanic muscle force was measured. The mean left side tetanic force as a percentage of the right was 100.0 Β± 4.4% and was statistically equivalent. Large standard deviations between sides (35β50%) were observed in the optimized parameters (preload, stimulus intensity, duration, and frequency). Optimization of the variables affecting isometric tetanic force resulted in reproducible and reliable sideβtoβside measurements of the TA muscle in the rat model. Β© 2008 WileyβLiss, Inc. Microsurgery, 2008.
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