Showing papers in "Human Movement Science in 1983"

TL;DR: In this article, the relative ground reaction force-time curves were generated using a cubic spline technique which transformed the absolute time events into 200 equally spaced data points to assist in making between speed comparisons.

TL;DR: In this article, a study of the relationship between head movement during conversation and the suprasegmental features of concurrent speech is presented, which builds heavily on speed-related parameters of movement, the kinematic description of which is made here.

TL;DR: The efficiency of an aerobic conditioning program (jogging) is compared to cognitive therapy (stress inoculation) and a waiting list control in modifying self-reported chronic stress as discussed by the authors.

TL;DR: The findings suggest that the task criterion specifies the appropriate information feedback for skill learning in that the information feedback must match the constraints imposed upon response output.

TL;DR: In this article, it was shown that performance asymmetries between the hands on a serial tapping task are due to differences in motor control processes, the degree of asymmetry should be sensitive to changes in the manipulated response parameter, speed of tapping.

TL;DR: It is concluded that the difference in performance level between both groups is mainly caused by a difference in skating position and in friction and not by a change in work capacity as one might expect on the basis of the lean body masses of both groups.

TL;DR: In this paper, the authors performed five climbing trials of a portable straight ladder and found that the two most commonly used methods of ascent for all trials were the lateral and four-beat lateral gaits, while only 31.8% of the subjects adopted the same gait pattern during each of the three trials.

TL;DR: In this article, four precision groups (qualitative, 1-, 2-, 3-, and 4-digit) were given 10 acquisition followed by 10 KR withdrawal trials in a knob turning task.

TL;DR: Trajectory formation defines that level of the motor control system where patterns of motor commands are generated from symbolic descriptions of arm movements, and more abstract levels of coordination concerned with the motion of the two hands (inter-manual coordination) and with the interplay between rotation and translation of one hand are experimentally investigated.

TL;DR: Sex-related differences in throwing ability between the ages of five and seven years were apparent; after the age of seven, improvement in performance of the females depended upon physique and power development; in males, the same factors, combined with throwing practice, were shown to be important.

TL;DR: The proposed model leads to the suggestion that the cognitive strategy of the performer may be influenced by a variety of factors such as the experience of the player, the time pressure, the expectancies, the performer's confidence in his predictions and the mistakes caused by incorrect predictions.

TL;DR: The results indicated that the movement patterns of the right lower limb were consistent with the kinetic link principle as it pertains to pushing activities, and that the instants of maximum dorsiflexion correspond to those times when the subjects were required to exert the greatest force on the ladder rungs.

TL;DR: In this paper, the strength of a known behavior, an operant composed of a colored light as discriminative stimulus and electromyographic activity of the rectus femoris muscle as response, was compared with that of other ongoing behaviors at each of five times during the stance (down) and swing (up) phases.

TL;DR: In this article, the authors investigated how reaction times are affected by preknowledge concerning hand and direction parameters, and the order in which these data are disclosed, and found that motor preparation and response selection explanations for this effect are considered.

TL;DR: The frequent failure to accurately terminate the burst was suggested to be due to a greater susceptibility, whether reflexive or conditioned, to simulation arising in the contracting RF muscle itself.

TL;DR: In this article, the effects of allowing children to make decisions relevant to their learning in a human movement program were assessed, and it was concluded that if a teacher desires to enhance creative thinking it appears encouraging children to making meaningful decisions is a viable approach to meeting this goal.

TL;DR: In this paper, a hypothesis concerning the development of voluntary reaching in the infant is proposed and tested by means of a computer simulation, the theoretical problem of the control of arm movements is analyzed and possible control strategies are considered.

TL;DR: In this article, the authors investigated the timing of fast and slow constant velocity movements and found that the faster constant velocity movement produced less variability in timing errors than the slow one, and that response timing was more accurate at the fast velocity movements.

TL;DR: Findings point to spatiotemporal symmetry throughout the process, with a significant increase in the time on-balance score, in learning of a motor task, using a multiparameter approach.

TL;DR: The authors found that the perception of social behavior is direct when ecological correlates which specify a pattern are not manpulated Spatial and temporal information appear to be two major correlates which facilitate human perception of ongoing social action.

TL;DR: The findings showed significant differences in both motion and time elements between the performance of amputees and non-amputees — mainly due to the motion element grasp.