1. Department of Kinesiology, University of Wisconsin-Madison, Madison, WI, USA;
2. Department of Anesthesiology, Mayo Clinic, Rochester, MN, USA;
3. College of Medicine and Science, Mayo Clinic, Rochester, MN, USA;
4. Department of Health Science Research, Mayo Clinic, Rochester, MN, USA;
5. Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA;
6. Department of Surgery, Mayo Clinic, Rochester, MN, USA