1. Biomechanics Research Laboratory, Department of Industrial Engineering, University of Miami, 1251 Memorial Drive, McArthur Engineering Building, #156, Coral Gables, FL 33146 e-mail:
2. Biomechanics Research Laboratory, Department of Industrial Engineering, University of Miami, 1251 Memorial Drive, McArthur Engineering Building, #268, Coral Gables, FL 33146 e-mail:
3. Mem. ASME Biomechanics Research Laboratory, Department of Industrial Engineering, University of Miami, 1251 Memorial Drive, McArthur Engineering Building, #276, Coral Gables, FL 33146 e-mail: