Impact loading in female runners with single and multiple bone stress injuries during fresh and exerted conditions.

"Competing interests The authors declare that they have no competing interests."

"The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or reflecting the views of the U.S. Army or the Department of Defense. Any citations of commercial organizations and trade names in this report do not constitute an official U.S. Army, Department of Defense endorsement or approval of the products or services of these organizations. This paper has been approved for public release with unlimited distribution. This research was supported in part by appointments to the Department of Defense Research Participation Program at the U.S. Army Research Institute of Environmental Medicine administered by the Oak Ridge Institute for Science and Education. We acknowledge support from the U.S. Department of Defense, Defense Health Program, and Joint Program Committee (W81XWH-16-1-0652), and the National Institutes of Health shared instrumentation grant (S10 RR023405). The results of this study are presented clearly, honestly, and without fabrication, falsification, or inappropriate data manipulation."