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- W124222778 abstract "The detailed kinematic and kinetic patterns in human gait and their variability within and between subjects provide considerable insight into the control structure of the central nervous system. Kinematic variables such as joint angles and trajectories of the center of mass of the trunk and of the heel and toe are consistent during both stance and swing. Kinetic patterns, such as joint moments of force, are a measure of the final integrating motor pattern of the central nervous system. However, these moment patterns, especially at the hip and knee, are extremely variable during stance and very consistent during swing. The high hip and knee variability is not random, but rather a stride-to-stride trade-off between the hip and knee. Two major and independent gain synergies are documented as a result of these findings. A support synergy, originally identified in 1980, appears during stance, when a total extensor moment pattern (called support moment) is evident from all three joints of the lower limb, independent of gross pattern changes at the hip or knee. A balance synergy is evident from the anterior-posterior trade-offs between the hip and knee that allow control of the forward and backward angular acceleration of the head, arms, and trunk (HAT). Thus the dynamic balance of HAT is the major stride-to-stride responsibility of the hip extensor-flexors during stance; but in" @default.
- W124222778 created "2016-06-24" @default.
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- W124222778 date "1989-01-01" @default.
- W124222778 modified "2023-09-23" @default.
- W124222778 title "Coordination of Motor Tasks in Human Gait" @default.
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- W124222778 doi "https://doi.org/10.1016/s0166-4115(08)60027-8" @default.
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