Physiology of skeletal muscle

Scott N. Drum, Ryan Weatherwax, J. Bryan Dixon

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Skeletal muscle is a highly regulated, voluntarily controlled tissue. Coordinated muscle action via neurological and metabolic input is realized in various muscle fiber types. In general, these types include I, IIa, and IIx. The primary metabolic qualities of each type are slow, medium fast, and fast contraction speeds, respectively. Knowledge of fiber-type energy systems is paramount and initially discussed in relation to aerobic and anaerobic qualities of muscle action. Next, muscle force production via the sliding filament theory (SFT) is examined and underscored as the primary, basic pattern invoked to produce human locomotion or movement as muscle tendinous attachments pull on bone. Therefore, an understanding of the above fiber types and their ability to produce varying degrees of force may lead to better quality care during rehabilitation from injury. Finally, a brief discussion about various proprioceptors in muscles, joints, and tendons punctuates the chapter.

Original languageEnglish (US)
Title of host publicationMuscular Injuries in the Posterior Leg
Subtitle of host publicationAssessment and Treatment
PublisherSpringer US
Pages13-26
Number of pages14
ISBN (Electronic)9781489976512
ISBN (Print)9781489976499
DOIs
StatePublished - Jan 1 2016
Externally publishedYes

Keywords

  • Aerobic
  • Anaerobic
  • Energy systems
  • Force production
  • Muscle fiber types
  • Proprioceptors
  • Skeletal muscle
  • Sliding filament theory

ASJC Scopus subject areas

  • General Medicine

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