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- Title
A Biomechanical Study of Side Steps at Different Distances.
- Authors
Yuki Inaba; Shinsuke Yoshioka; Yoshiaki Iida; Hay, Dean C.; Senshi Fukashiro
- Abstract
Lateral quickness is a crucial component of many sports. However, biomechanical factors that contribute to quickness in lateral movements have not been understood well. Thus, the purpose of this study was to quantify 3-dimensional kinetics of hip, knee, and ankle joints in side steps to understand the function of lower extremity muscle groups. Side steps at nine different distances were performed by nine male subjects. Kinematic and ground reaction force data were recorded, and net joint torque and work were calculated by a standard inverse-dynamics method. Extension torques and work done at hip, knee, and ankle joints contributed substantially to the changes in side step distances. On the other hand, hip abduction work was not as sensitive to the changes in the side step distances. The main roles of hip abduction torque and work were to accelerate the center of mass laterally in the earlier phase of the movement and to keep the trunk upright, but not to generate large power for propulsion.
- Subjects
KNEE physiology; ANKLE physiology; HIP joint physiology; ANALYSIS of variance; ANKLE; DYNAMICS; GAIT in humans; GROUND reaction forces (Biomechanics); RANGE of motion of joints; KINEMATICS; LONGITUDINAL method; PROBABILITY theory; ROTATIONAL motion; STATISTICS; TORQUE; WEIGHTS &; measures; DATA analysis; EFFECT sizes (Statistics); ABDUCTION (Kinesiology); REPEATED measures design; MOTION capture (Human mechanics)
- Publication
Journal of Applied Biomechanics, 2013, Vol 29, Issue 3, p336
- ISSN
1065-8483
- Publication type
Article
- DOI
10.1123/jab.29.3.336