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.