Email updates   Open Access Highly Accessed Research article
Sarcomere length-dependence of activity-dependent twitch
potentiation in mouse skeletal muscle  Dilson E Rassier and
Brian R MacIntosh*  Author Affiliations  Human Performance
Laboratory, Faculty of Kinesiology, University of Calgary, 2500
University Drive, T2N 1N4, Calgary (AB), Canada  For all author
emails, please log on.  BMC Physiology 2002, 2:19 
doi:10.1186/1472-6793-2-19   Received:18 April 2002 Accepted:10
December 2002 Published:10 December 2002     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.   Mouse extensor digitorum
longus (EDL) muscles were dissected to small bundles of fibers,
which permit measurement of sarcomere length (SL), by l