Redigerer Muskelkontraksjon (avsnitt)

=== Isometrisk kontraksjon ===

En isometrisk kontraksjon av en muskel genererer spenning uten å endre lengde.<ref name = "Widmaier et al 2008">{{cite book | last1 = Widmaier | first1 = Eric P. | last2 = Raff | first2 = Hersel | last3 = Strang | first3 = Kevin T. | authorlink = | chapter = Muscle | title = Vander's Human Physiology: The Mechanisms of Body Function | publisher = McGraw-Hill | series = | volume = | edition = 12th | date = 2010 | location = New York, NY | pages = 250–291 | language = | url = | doi =| isbn = 0-321-98122-7}}</ref><ref name = "Aidley 1998">{{cite book | last = Aidley | first = David J. | chapter = Mechanics and energetics of muscular contraction | title = The Physiology of Excitable Cells | publisher = Cambridge University Press | series = | volume = | edition = 4th | date = 1998 | location = New York, NY | pages = [https://archive.org/details/physiologyofexci0000aidl_s5u8/page/323 323]–335 | language = | url =https://archive.org/details/physiologyofexci0000aidl_s5u8| doi =| isbn = 0-521-57421-8}}</ref><ref name = "Sircar 2008">{{cite book | last = Sircar | first = Sabyasachi | chapter = Muscle elasticity | title = Principles of Medical Physiology | publisher = Thieme | series = | volume = | edition = 1st | date = 2008 | location = New York, NY | pages = [https://archive.org/details/principlesofmedi0000sirc/page/113 113] | language = | url =https://archive.org/details/principlesofmedi0000sirc| doi =| isbn = 1-588-90572-1}}</ref><ref name = "Bullock et al 2001">{{cite book | last1 = Bullock| first1 = John | last2 = Boyle| first2 = Joseph | last3 = Wang | first3 = Michael B. | authorlink = | chapter = Muscle contraction | title = NMS Physiology | publisher = Lippincott Williams and Wilkins | series = | volume = 578 | edition = 4th | date = 2001 | location = Baltimore, Maryland | pages = 37–56 | language = | url = | doi =| isbn =}}</ref> Et eksempel finnes når musklene i [[hånd]]en og [[underarm]]en griper en gjenstad; [[ledd]]ene i hånden beveger seg ikke, men muskler genererer tilstrekkelig kraft til å hindre gjenstanden i å falle ut av hånden.