1. a Department of Health and Exercise Sciences , School of Health Sciences and Education, Truman State University , 212 Pershing Building, 100 E. Normal St, Kirksville, MO, 63501, USA
2. b HPER Biomechanics Laboratory , University of Nebraska at Omaha , 6001 Dodge Street, Omaha, NE, 68182-0216, USA
3. c Environmental, Agricultural and Occupational Health Sciences , College of Public Health, University of Nebraska Medical Center , 987850 Nebraska Medical Center, Omaha, NE, 68198-7850, USA