1. Department of Health and Kinesiology, Texas A&M University, College Station, Texas
2. Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, Texas
3. Department of Biology, Drake University, Des Moines, Iowa
4. Department of Medical Physiology, Texas A&M University, College Station, Texas
5. Department of Biomedical Engineering, Texas A&M University, College Station, Texas