Janet S. Dufek (Kinesiology and Nutrition Sciences) and Barry T. Bates (Professor Emeritus, University of Oregon) co-authored a mini review titled "Within-Activity Cross-Training: A Load-Variability Framework for Chronic Injury Risk Reduction in Distance Running" in the Shrine Journal of Research and Sciences.  In this work, the authors present a load-variability model and relate it to a practical injury-prevention suggestion that does not require any change in frequency, intensity, or duration of running.