Meeting Banner
Abstract #1425

Monitoring Exercise-Induced Muscle Changes Using Diffusion Tensor Imaging, with and Without Caffeine

Conrad Rockel1, 2, Andrew Davis, 23, Greg Wells4, Michael Noseworthy1, 2

1School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; 2Imaging Research Centre, St Joseph's Healthcare, Hamilton, Ontario, Canada; 3Medical Physics and Applied Radiation Science, McMaster University, Hamilton, Ontario, Canada; 4Faculty of Physical Education and Health, University of Toronto, Toronto, Ontario, Canada

The time course of diffusion within calf muscle following exercise was investigated using DTI in the presence and absence of caffeine. Two trials were performed, each involving two exercise sets one hour apart. In one trial, caffeine was consumed after the first exercise set. Eight DTI volumes were collected both prior to and immediately after each set. In gastrocnemius, post-exercise mean diffusivity(MD) and eigenvalues were approximately baseline, followed by a rapid increase and subsequent gradual decline. Soleus post-exercise MD and eigenvalues increased slightly from rest and appeared stable across time. The presence of caffeine did not affect diffusivity values.

Abstract PDF Poster PDF

Keywords

able allowed allows although apart appears approximate arch aster attributed bate biomedical blood bout bouts built caffeine calf collected combined conditions consecutively consisted consistent contraction course creased cross custom days decline degree determine diffusion diffusivity displaying drawn dynamics eared ease eases eigenvalue eight engineering equivalent ever exercise fiber flow fluid force generate gradual graham green health healthy heavily hods hour hydrogen hypothesized immediately indicating individual individuals induced influence intro isolating knee known lateral lesser little load magnitude maintain maxim measures medial minute minutes mixed mobility moves muscle muscles needed nervous notable occlusion occlusions oral output peak peaks period peripheral physical physics plantar pose post preceding previously prior protocol proton quantification radiation rather regarding relatively repeatability response responsiveness restriction rotationally science signifies similarity slice slices slight slightly sole speed spike sports stable stimulate stimulation studies substance supine tensor thick tissue tissues towards trial trials unlike variations vary volumes whether wing workload worthy