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Foot Movements (foot + movement)
Selected AbstractsAssociation of body rolling, leg rolling, and rhythmic feet movements in a young adult: A video-polysomnographic study performed before and after one night of clonazepamMOVEMENT DISORDERS, Issue 4 2008Giovanni Merlino MD Abstract We report clinical and polysomnographic data of a young adult affected by several forms of rhythmic movement disorder (RMD), present in the same night, including a new kind of it, known as rhythmic feet movements. The patient was monitored by means of three consecutive video-polysomnographic recordings, the first two performed to confirm the presence of the sleep disorder and the last one to observe the acute effectiveness of clonazepam on rhythmic movements. We discuss the characteristics of the RMD and the response to the first administration of pharmacological treatment, observed in our patient. © 2007 Movement Disorder Society [source] Neuromotor development from 5 to 18 years.DEVELOPMENTAL MEDICINE & CHILD NEUROLOGY, Issue 7 2001Part 1: timed performance Timed performance in specific motor tasks is an essential component of a neurological examination applied to children with motor dysfunctions. This article provides centile curves describing normal developmental course and interindividual variation of timed performances of non-disabled children from 5 to 18 years. In a cross-sectional study (n=662) the following motor tasks were investigated: repetitive finger movements, hand and foot movements, alternating hand and foot movements, sequential finger movements, pegboard, and dynamic and static balance. Intraobserver, interobserver, and test-retest reliability for timed measurements were moderate to high. Timed performances improved throughout the entire prepubertal period, but differed among various motor tasks with respect to increase in speed and when the,adolescent plateau' was reached. Centile curves of timed performance displayed large interindividual variation for all motor tasks. At no age were clinically relevant sex differences noted, nor did socioeconomic status significantly correlate with timed performance. Our results demonstrate that timed motor performances between 5 and 18 years are characterized by a long-lasting developmental change and a large interindividual variation. Therefore, a well standardized test instrument, and age-specific standards for motor performances are necessary preconditions for a reliable assessment of motor competence in school-age children. [source] Using soft computing techniques for improving foot trajectories in walking machinesJOURNAL OF FIELD ROBOTICS (FORMERLY JOURNAL OF ROBOTIC SYSTEMS), Issue 7 2001Elena Garcia Walking machines have been investigated during the last 40 years and some basic techniques of this field are already well known. However, some aspects still need to be optimized. For instance, speed seems to be one of the major shortcomings of legged robots; thus, improving leg speed has been chosen as the main aim of this work. Although some algorithms for optimizing trajectory control of robot manipulators already exist, we propose a more computationally efficient method that employs fuzzy set theory to involve real dynamic effects over leg motion instead of an inaccurate mathematical model. In this article, we improve leg speed by automatically tuning the acceleration of legs. For this purpose, we define fuzzy rules based on experiments and we find the optimal acceleration for every given trajectory. A simple fuzzy inference system is used to compute the required acceleration. It is based on five rules using three linguistic variables. Final results show that foot acceleration tuning for straight trajectory generation is a suitable method for achieving accurate, smooth and fast foot movements. Also it is shown that under some conditions average leg speed can be increased up to 100% using the control methods herein proposed. © 2001 John Wiley & Sons, Inc. [source] Asymmetry of the active nonweightbearing foot and ankle range of motion for dorsiflexion-plantar flexion and its coupled movements in adultsCLINICAL ANATOMY, Issue 7 2007Virgilio F. Ferrario Abstract Asymmetries in ankle range of motion (ROM) have been reported, but often the uninvolved limb is used as a reference in clinical practice. The study wanted to quantify the intraindividual asymmetries in dorsi-plantar flexion foot and ankle ROM and its coupled foot movements. Active triplanar nonweightbearing ROM of the foot and ankle was recorded in young healthy adults (30 male volunteers, mean age 22.8 years; 35 female volunteers, mean age 23.8 years) using an optoelectronic set-up. The sagittal plane movement (mean ROM female subjects right side 71.3°, left side 71.4°, P > 0.05; mean ROM male subjects right side 69°, left side 68.9°, P > 0.05; sex difference, P < 0.001) was coupled with frontal (mean ROM female subjects right side 16.6°, left side 14.8°, P > 0.05; male subjects right side 17°, left side 15.3°; P > 0.05; no sex difference) and horizontal (mean ROM female subjects right side 19.6°, left side 18.8°, P < 0.001; male subjects right side 17.6°, left side 16.2°, P < 0.001; sex < 0.001) plane motions. Individual fluctuating asymmetries up to 15° (principal movement), and up to 29° (associated movements) were measured. Overall, 20% of female and 34% of male subjects had principal plane asymmetries >5°, and 50% of the subjects had asymmetries >5° in the associated movements. In young adults, individual asymmetries in ankle joint complex dorsi-plantar flexion should be taken into account when using the uninvolved, contralateral limb as a reference for clinical examination. Clin. Anat. 20:834,842, 2007. © 2007 Wiley-Liss, Inc. [source] | ||||||||||