Injury, Fatigue, & Fast Twitch Fibers

Screen Shot 2020 02 29 At 4.32.22 Pm

Injury, Fatigue, & Fast Twitch Fibers

Brian Fox



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🦵🏼Research has shown that when a tissue or tissues get injured, the slow twitch (ST) muscle fibers decrease in the affected tissue and surrounding area(s) , thus leaving behind mostly fast twitch muscle fibers (FT). . 🦵🏼This is valuable information when in treatment, since ST fibers have a high fatigue threshold (think of a long distance runner) and can determine our treatment “workload”. Due to certain inflammatory responses from an injury, the magnitude of the injury and when it occurred, this fiber type will begin to deteriorate in order to not waste energy. The FT fibers have a low threshold to fatigue (think sprinter) and will give you a short spurt of force then drop off. . 🦵🏼PAILs efforts in and around the injured areas should be low intensity for long periods of time to get the ST fibers to adapt in specific tissues (SPP or Specific Physical Preparedness from a treatment perspective). This low level isometric can also work in a global sense to use a larger amount of connective tissue thanks to bioflow (affect more “stuff”). * Greater PAILs efforts can also be thought of as GPP work.* This type of Tx May also be less manual work and more specific strength work to build capacities in the tissues, specifically to build ST fibers. Working to increase the amount of good information (afference) and build capacity back into the system. . #humananimation #manualtherapy #manualpractitioner #practicemakesbetter #adaptation #rehabilitation #prehabilitation #strength #strengthandconditioning #functionalrangesystems #functionalrangeassessment #functionalrangerelease #functionalrangeconditioning #controlyourself #injury #Isometrics #treatment #mobility #jointhealth #train #forceisthelanguage #capacity

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