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The purpose of this study was to propose a measure of symmetry/asymmetry for normal human gait and to quantify symmetries/asymmetries of normal human gait for selected gait variables using a force platform. Sixty-two subjects performed ten gait trials each, stepping on the force platform five times with each leg. From these gait trials a symmetry index was(More)
The purpose of this study was to determine force-length relations of intact human gastrocnemius muscles experimentally. Changes in maximal active isometric forces of the gastrocnemius muscle were calculated from resultant ankle joint moments of carefully executed maximal effort contractions at systematically changing knee and ankle joint configurations.(More)
The purpose of this study was to assess the inter- and intraexaminer reliability of the Gillet-motion palpation procedure using 10 qualified chiropractors and 11 patients with a sacroiliac joint problem. Intraexaminer reliability was found to be statistically significant for all agreement scores investigated. Interexaminer reliability was found to be(More)
The task in the present experiments was to reach out and grasp a novel object that afforded two possible grips. Different versions of the object were created that biased subjects to use one grip or the other. The dependent variable was the repetition effect, the tendency to repeat the grip that was used on the previous trial. In Experiment 1, two(More)
A method was developed to calculate total resultant force and moment on a body segment, in three dimensions, from accelerometer data. The method was applied for an analysis of intersegmental loading at the hip joint during the single support phase of working and running, using four triaxial accelerometers mounted on the upper body. Results were compared to(More)
The purpose of this study was to obtain lines of action and moment arms in the sagittal plane of the major force-carrying structures crossing the knee joint. The muscles and ligaments studied were the quadriceps, biceps femoris, semimembranosus, and semitendinosus muscles and the anterior and posterior cruciate and medial and lateral collateral ligaments.(More)
The Nucleic Acid Sequence-Based Amplification (NASBA) process involves alternate steps of DNA synthesis from an RNA template and RNA synthesis from a DNA template, using avian myeloblastosis virus (AMV) reverse transcriptase and T7 RNA polymerase, respectively. The overall fidelity of the amplification process was determined by sequence analysis of cloned(More)
The purposes of this study were: 1) to compare the impact forces in running using running shoes with conventional insoles to the impact forces using running shoes with four different viscoelastic insoles, 2) to discuss possible effects of the viscoelastic insoles on lower leg kinematics, and 3) to explain the force and kinematic results using a mechanical(More)
The purpose for conducting this study was to investigate the effects of chiropractic treatment on the gait of a group of subjects with sacroiliac joint syndromes. The clinical results suggest that chiropractic treatments reduce pain, increase mobility of the sacroiliac joint, and restore general functional ability of the patient. Force results obtained by(More)