Date of Award
Master of Science
John L Williams
Obesity is associated with increased risk of complications following total joint replacement. This work compares differences in kinematics and kinetics during sit-to-stand (STS) which may contribute to this risk. Nine high BMI subjects and ten normal BMI subjects were analyzed using force plates and a 9-camera motion capture system during STS. Angles and moments at the hip and knee were calculated using a musculoskeletal model. No differences were found at the knee. The hip was roughly 50 percent more abducted throughout the STS cycle and peak normalized hip abduction moments were approximately twice as large in the high BMI group. This study also examines issues involving motion capture in overweight/obese subjects. Difficulty in placing skin markers due to increased torso mass can be addressed by the use of virtual markers. Increased hip abduction angles and moments in overweight/obese subjects during STS may contribute a greater risk of complications.
dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.
Huffman, Kyle Daniel, "Kinematics and Kinetics of Sit-to-Stand Activity in Normal and High BMI Subjects" (2014). Electronic Theses and Dissertations. 962.