(1) Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, 2500 University Drive, T2N 1N4, Calgary, AB, Canada
Abstract:
Background
It has been reported that potentiation of a skeletal muscle twitch response is proportional to muscle length with a negative slope during staircase, and a positive slope during posttetanic potentiation. This study was done to directly compare staircase and posttetanic responses with measurement of sarcomere length to compare their length-dependence.