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==Investigación==
Para investigar as propiedades do músculo esqueletico utilízanse moitas técnicas. A [[estimulación muscular eléctrica]] utilízase para determinar a forza e velocidade de contracción a diferentes frecuiencias de estimulación, o que está relacionado coa composición de tipos de fibras e a mestura das mesmas nun determinado grupo muscular. As probas de músculos in vitro utilízanse para unha caracterización máis completa das propiedades do músculo.
Research on skeletal muscle properties uses many techniques. [[Electrical muscle stimulation]] is used to determine force and contraction speed at different stimulation frequencies, which are related to fiber-type composition and mix within an individual muscle group. [[In vitro muscle testing]] is used for more complete characterization of muscle properties.
TheA electricalactividade activityeléctrica associatedasociada withcoa musclecontracción contraction aremuscular measuredmídese viapor [[electromyographyelectromiografía]] (EMG). A EMG isé aunha commontécnica techniquecomún usedutilizada inen manymoitas disciplinesdisciplinas withindas theciencias do Exerciseexercicio ande Rehaba Sciencesrehabilitación. SkeletalO musclemúsculo esquelético hasten twodúas physiologicalrespostas responsesfisiolóxicas: relaxationrelaxación ande contractioncontracción.<ref>The electricalOs activitymecanismos associatedpara withque muscleteñan contractionlugar arexeran measuredunha viaactividade [[electromyography]]eléctrica (EMG)</ref>medida The mechanisms for which these responses occur generate electrical activity measured bypor EMG. Specifically,O EMG canpode measuremedir theo actionpotencial potentialde ofacción adun skeletalmúsculo muscleesquelético, whicho occurscal fromse theproduce por [[hyperpolarizationhiperpolarización]] of the motordos [[axonsaxón]]s frommotores nervea impulsespartir sentdos toimpulsos thenerviosos muscleenviados (1)ao músculo. O EMG isutilízase usedpara insaber researchse foro determiningmúsculo ifestudado theestá skeletalsendo muscleactivado, ofa interestcantidade isde beingforza activatedxerada, thee amountcomo ofun [[force]]indicador generated, and an indicator ofda [[musclefatiga fatiguemuscular]].<ref name="pmid24319999">{{cite journal|last=Cè|first=E|author2=Rampichini, S |author3=Limonta, E |author4= Esposito, F |title=Fatigue effects on the electromechanical delay components during the relaxation phase after isometric contraction.|journal=Acta physiologica (Oxford, England)|date=Dec 10, 2013|doi=10.1111/apha.12212|pmid=24319999 |volume=211 |issue=1 |pages=82–96}}</ref> TheHai twodous typestipos ofde EMG: areintramuscular intra-musculare EMGde andsuperficie the(este mostúltimo common,máis surface EMGcomún). TheOs sinais do EMG signalsson aremoito muchmaiores greatercando whenun amúsculo skeletalesquelético musclese iscontrae contractingque versecando relaxing.se relaxa. HoweverPorén, foren smallermúsculos andesqueléticos deepermáis skeletalpequenos musclese theprofundos os sinais EMG signalsestán arereducidos reducede, andpor thereforetanto, areesta viewedtécnica aspara aeles lessé valuedmenos techniquevaliosa forá measuringhora thede medir a súa activationactivación.<ref name="pmid23193462">{{cite journal|last=Xu|first=Q|author2=Quan, Y |author3=Yang, L |author4= He, J |title=An adaptive algorithm for the determination of the onset and offset of muscle contraction by EMG signal processing.|journal=IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society|date=Jan 2013|volume=21|issue=1|pages=65–73|doi=10.1109/TNSRE.2012.2226916|pmid=23193462}}</ref> InNas researchinvestigacións usingnas que se usa EMG, anormalmente [[musclerealízase contraction|maximala voluntarycontracción contraction]]voluntaria (MVC)máxima isno commonlymúsculo performedesquelético onde theinterese, skeletalpara muscleter ofdatos interest,de toreferencia havepara referenceo dataresto fordos therexistros rest of thede EMG recordingsdurante during thea mainproba experimental testingprincipal forpara thatese samemesmo skeletal musclemúsculo.<ref name="pmid24622330">{{cite journal|last=Milder|first=DA|author2=Sutherland, EJ |author3=Gandevia, SC |author4= McNulty, PA |title=Sustained maximal voluntary contraction produces independent changes in human motor axons and the muscle they innervate.|journal=PLoS ONE|year=2014|volume=9|issue=3|pages=e91754|doi=10.1371/journal.pone.0091754|pmid=24622330|pmc=3951451}}</ref>
B. K. Pedersen ande heros colleaguesseus havecolegas conducteddemostraron researchque showingo thatmúsculo skeletalfunciona muscleen functionsparte ascomo anun [[endocrine]]órgano endócrino ao organsegregar bymoléculas secretingreguladoras como [[cytokinecitocina]]s ande otheroutros [[peptidepéptido]]s, nowagora referred to aschamados [[myokinemiocina]]s. MyokinesAs inmiocinas turncrese areque believedson tomediadores mediatenos thebeneficios healthpara benefitsa ofsaúide [[exercise]]do exercicio.<ref>Pedersen BK. "Muscle as a secretory organ." American Physiological Society. Compr Physiol 3:1337-1362, 2013. http://www.inflammation-metabolism.dk/index.php?pageid=21&pmid=23897689</ref>
==Patoloxías==
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