Evidence for generalized motor programs using gait pattern analysis.

Human intra limb gait kinematics were analyzed via statistical and structural pattern recognition methods to determine the role of relative timing of limb segments within and between modes of gait. Five experienced runners were filmed while walking (3-6 km/hour) and running (8-12 km/hour) on a motor driven treadmill. Kinematic data consisted of relative timing of the four phases of the Philippson step cycle and intersegmental limb trajectories, determined from angle-angle diagrams. Despite marked decreases in absolute time durations within gaits remained constant over the speeds which were studied. Although a 2-fold increase in locomotor speed occurred in walking and a 1.5-fold speed increase occurred within running, the percentage of time spent in each of the Philippson phases was not significantly changed. However, significant differences in the time percentages and sequences of the step cycle phases were found between walking and running. Correlations between limb segment trajectories occurring in the different gaits showed strong coherence for overall step cycle patterns, but within step cycle phases and across speeds, selective phases displayed little correspondence.

[1]  T. Brown.  The intrinsic factors in the act of progression in the mammal , 1911 .

[2]  T. Brown.  On the nature of the fundamental activity of the nervous centres; together with an analysis of the conditioning of rhythmic activity in progression, and a theory of the evolution of function in the nervous system , 1914, The Journal of physiology.

[3]  Shurrager Ps,et al.  Walking spinal carnivores. , 1951 .

[4]  J. Prost.  The methodology of gait analysis and gaits of monkeys. , 1965, American journal of physical anthropology.

[5]  Shik Ml,et al.  Control of walking and running by means of electric stimulation of the midbrain , 1966 .

[6]  Donald M. Wilson,et al.  Models for the generation of the motor output pattern in flying locusts , 1968 .

[7]  I. Engberg,et al.  An electromyographic analysis of muscular activity in the hindlimb of the cat during unrestrained locomotion. , 1969, Acta physiologica Scandinavica.

[8]  D W Grieve,et al.  The assessment of gait. , 1969, Physiotherapy.

[9]  K. Pearson.  Central Programming and Reflex Control of Walking in the Cockroach , 1972 .

[10]  Merton Pa.  How we control the contraction of our muscles. , 1972 .

[11]  S. Grillner.  The role of muscle stiffness in meeting the changing postural and locomotor requirements for force development by the ankle extensors. , 1972, Acta physiologica Scandinavica.

[12]  S. Grillner.  Locomotion in the Spinal Cat , 1973 .

[13]  G. E. Goslow,et al.  The cat step cycle: Hind limb joint angles and muscle lengths during unrestrained locomotion , 1973, Journal of morphology.

[14]  R. W. Pew,et al.  Human perceptual-motor performance , 1974 .

[15]  D A Winter,et al.  Measurement and reduction of noise in kinematics of locomotion. , 1974, Journal of biomechanics.

[16]  R. Schmidt.  A schema theory of discrete motor skill learning. , 1975 .

[17]  J. Parlange,et al.  Water uptake, diameter change, and nonlinear diffusion in tree stems. , 1975, Plant physiology.

[18]  J J Summers,et al.  The role of timing in motor program representation. , 1975, Journal of motor behavior.

[19]  S. Grillner.  Locomotion in vertebrates: central mechanisms and reflex interaction. , 1975, Physiological reviews.

[20]  Carl Gans,et al.  Muscle activity in rat locomotion: Movement analysis and electromyography of the flexors and extensors of the elbow , 1975, Journal of morphology.

[21]  J. Halbertsma,et al.  Basic Programs for the Phasing of Flexion and Extension Movements of the Limbs during Locomotion , 1976 .

[22]  Douglas G. Stuart,et al.  Neural Control of Locomotion , 1976, Advances in Behavioral Biology.

[23]  Douglas G. Stuart,et al.  Movements of the Hindlimb During Locomotion of the Cat , 1976 .

[24]  S T Klapp,et al.  Response programming, as assessed by reaction time, does not establish commands for particular muscles. , 1977, Journal of motor behavior.

[25]  G A Cavagna,et al.  STORAGE AND UTILIZATION OF ELASTIC ENERGY IN SKELETAL MUSCLE , 1977, Exercise and sport sciences reviews.

[26]  D. Grieve,et al.  The analysis of normal stepping movements as a possible basis for locomotor assessment of the lower limbs. , 1978, Journal of anatomy.

[27]  C. Taylor.  Energetics and mechanics of terrestrial locomotion: Muscles, pendulums and springs , 1979 .

[28]  T. C. Huang,et al.  Intersegmental relationships in human lower extremity swing motions , 1979 .

[29]  S. Grillner,et al.  The adaptation to speed in human locomotion , 1979, Brain Research.

[30]  M. Hildebrand.  The Adaptive Significance of Tetrapod Gait Selection , 1980 .

[31]  Ronald F. Zernicke,et al.  The recognition and correlation of human movement patterns , 1980 .

[32]  R. Schmidt.  8 On the Theoretical Status of Time in Motor Program Representations , 1980 .