Meeting Banner
Abstract #1632

Temporal Diffusion Differences Between Slow-Twitch and Fast-Twitch Skeletal Muscle Following Mild Exercise

Conrad P. Rockel1, Alireza Akbari1, Dinesh A. Kumbhare2, 3, Michael D. Noseworthy, 14

1School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; 2Physical Medicine and Rehabilitation, McMaster University, Hamilton, Ontario, Canada; 3Department of Medicine, McMaster University, Hamilton, Ontario, Canada; 4Electrical and Computer Engineering, McMaster University, Hamilton, Ontario, Canada

Mean Diffusivity (DTI) was used to assess skeletal muscle dynamics following mild exercise. Diffusion differences were observed in muscles known to be involved in the exercise, while little change was observed in uninvolved muscles. Involved muscles composed mostly of fast-twitch fibers demonstrated different diffusion behaviour across time than muscles of mostly slow-twitch composition, a result thought to be due to differing levels of vascularization between the two fiber types.

Keywords

active alterations although amount anatomy anterior apparent around artifacts assessed audience avoid became began biomedical blood brown bulk calf channel chemical clinical clinicians coil collected collection computer consisted content continued correlation course create cross decline delayed demand differed differential diffusion diffusivity dominant dominated done drawn dual electrical engineering every exercise exhaust exhibited extremity fascia fast fiber fibers flow fluid foot furthermore goal greater healthy held immediately inactive individual induced interstitial investigate involved larger limited little longer magnitude male measures medical medicine mild minutes mostly movement muscle muscles negative none notable noted nutrients pattern patterns percentage percentages period periods physical physiology placed post prevent previously prior proximate published reflect registered rehabilitation relationship relatively researchers response returned rise scanned scanning school section sensitive skeletal slices slope slopes slow spatially spin steady steeply stray students subjects subsequently supply target temporal temporally tensor thick thickest thought tissues twitch types uninvolved vessels volume volumes volunteer volunteers