Rhythmic and non-rhythmic auditory precues: Multiple mechanisms mediating movement performance

Abstract:Coping strategies of patients with obstetric brachial plexus palsy (OBPP) are highly individual. Up to now, individual movement performance is assessed by visual observations of physicians or therapists - a procedure, which is highly subjective and lacks objective data. However, objective data about the individual movement performance are the key to evidence-based and individualized treatment. In this paper, a new approach is presented, which provides objective information about the upper extremity movement performance of patients with OBPP. The approach is based on the use of accelerometers in combination with a classification procedure. The movement performance of 10 healthy volunteers and 41 patients with OBPP has been evaluated by experienced physiotherapists and has been assigned to one of 4 categories representing the Mallet Scale (MS) IV to I. Three triaxial-accelerometers were placed at chest, upper arm and wrist of the affected side of the patient. Acceleration signals have been recorded during repetitive movements with relevance regarding daily life. Here, especially the results from the “hand to mouth” task are presented. From the 9 recorded acceleration signals 13 relevant features were extracted. For each of the 13 features 4 thresholds have been determined distinguishing best between the 4 patient categories of the MS and the healthy subjects. With respect to the thresholds each feature value has been assigned to the discrete numbers 0, 1, 2, 3 or 4. Afterwards, each discrete number has been weighted by a factor regarding the correlation between the feature’s value and the MS score. The resulting weighted discrete numbers of all 13 features have been added resulting in a score, which quantifies the individual upper extremity movement performance. Based on this score the movement performance of each patient has been assigned to the classes “very good”, “good”, “regular” and “bad”. All movements of the 10 healthy volunteers were classified as “very good”. The movement performance of two patients MS IV were classified as “very good” as well and the movements of the other 16 patients as “good”. The movements of the entire group of MS III patients fell into the class “regular”. Just one MS II patient was assigned to the class “regular” while the others were classified as “bad”. It was not possible to classify the movements of MS I patients. This was mainly due to the fact that none of these patients MS I was able to complete the task successfully. The developed approach demonstrated its ability to quantify the movement performance of upper extremity movements based on accelerometers. This provides an easy to use tool to assess patient’s movement strategies during daily tasks for diagnosis and rehabilitation.

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Strong age but weak sex effects in eye movement performance in the general adult population: Evidence from the Rhineland Study

Vision Research ◽

10.1016/j.visres.2020.10.004 ◽

2021 ◽

Vol 178 ◽

pp. 124-133

Author(s):

Annabell Coors ◽

Natascha Merten ◽

David D. Ward ◽

Matthias Schmid ◽

Monique M.B. Breteler ◽

...

Keyword(s):

Eye Movement ◽

Adult Population ◽

Sex Effects ◽

Movement Performance ◽

General Adult Population

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Systematic Review of Automatic Assessment Systems for Resistance-Training Movement Performance: A Data Science Perspective

Computers in Biology and Medicine ◽

10.1016/j.compbiomed.2021.104779 ◽

2021 ◽

pp. 104779

Author(s):

Rylea Hart ◽

Heather Smith ◽

Yanxin Zhang

Keyword(s):

Systematic Review ◽

Resistance Training ◽

Data Science ◽

Automatic Assessment ◽

Movement Performance ◽

Assessment Systems

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Determinants of the Sit-to-Stand Movement: A Review

Physical Therapy ◽

10.1093/ptj/82.9.866 ◽

2002 ◽

Vol 82 (9) ◽

pp. 866-879 ◽

Cited By ~ 328

Author(s):

Wim GM Janssen ◽

Hans BJ Bussmann ◽

Henk J Stam

Keyword(s):

Citation Index ◽

Scientific Information ◽

Major Influence ◽

Seat Height ◽

Sit To Stand ◽

Movement Performance ◽

Lower Maximum ◽

Foot Position ◽

Science Citation Index Expanded ◽

Height Use

Abstract Background and Purpose. The sit-to-stand (STS) movement is a skill that helps determine the functional level of a person. Assessment of the STS movement has been done using quantitative and semiquantitative techniques. The purposes of this study were to identify the determinants of the STS movement and to describe their influence on the performance of the STS movement. Methods. A search was made using MEDLINE (1980–2001) and the Science Citation Index Expanded of the Institute for Scientific Information (1988–2001) using the key words “chair,” “mobility,” “rising,” “sit-to-stand,” and “standing.” Relevant references such as textbooks, presentations, and reports also were included. Of the 160 identified studies, only those in which the determinants of STS movement performance were examined using an experimental setup (n=39) were included in this review. Results. The literature indicates that chair seat height, use of armrests, and foot position have a major influence on the ability to do an STS movement. Using a higher chair seat resulted in lower moments at knee level (up to 60%) and hip level (up to 50%); lowering the chair seat increased the need for momentum generation or repositioning of the feet to lower the needed moments. Using the armrests lowered the moments needed at the hip by 50%, probably without influencing the range of motion of the joints. Repositioning of feet influenced the strategy of the STS movement, enabling lower maximum mean extension moments at the hip (148.8 N·m versus 32.7 N·m when the foot position changed from anterior to posterior). Discussion and Conclusion. The ability to do an STS movement, according to the research reviewed, is strongly influenced by the height of the chair seat, use of armrests, and foot position. More study of the interaction among the different determinants is needed. Failing to account for these variables may lead to erroneous measurements of changes in STS performance.

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Cognitive and Physical Activity-Related Aspects of Children Associated to the Performance of the Crunning Movement

Journal of Functional Morphology and Kinesiology ◽

10.3390/jfmk6010009 ◽

2021 ◽

Vol 6 (1) ◽

pp. 9

Author(s):

Ewan Thomas ◽

Marianna Alesi ◽

Garden Tabacchi ◽

Carlos Marques da Silva ◽

David J. Sturm ◽

...

Keyword(s):

Physical Activity ◽

Children And Adolescents ◽

Team Sports ◽

Group Differences ◽

Test Results ◽

Older Children ◽

Related Factors ◽

Movement Performance ◽

Individual Sports ◽

Age Range

The aim of this investigation was to identify possible related factors associated to the performance of the crunning test in European children and adolescents. A total number of 559 children and adolescents (age range 6–14 years) of which 308 boys (55.1%) and 251 girls (44.9%), from seven European countries, were screened. A questionnaire concerning demographic and personal life-related factors and a cognitive assessment were performed. A regression analysis was conducted with the performance measures of the crunning movement. T-tests and ANCOVA were used to analyze sub-group differences. Boys have greater crunning performance values compared to girls (5.55 s vs. 7.06 s, p < 0.001) and older children perform better than younger ones (R2 −0.23; p < 0.001). Children with healthy and active habits (exercising or spending time with family members vs. reading or surfing the internet) performed better in the test. Children engaged in team sports had better crunning performances compared to those engaged in individual sports (6.01 s vs. 6.66 s, p = 0.0166). No significant association was found regarding cognitive-related aspects in either children engaged in team or individual sports and the crunning performance. Older and male children performed better in the crunning test than younger and female children. Physical activity-related aspects of children’s life are associated with crunning movement performance. No association was found between higher cognitive performance and the crunning test results.

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Media-Bodies: Choreography as Intermedial Thinking Through in the Work of William Forsythe

Dance Research Journal ◽

10.1017/s0149767700000838 ◽

2010 ◽

Vol 42 (1) ◽

pp. 61-72 ◽

Cited By ~ 4

Author(s):

Sabine Huschka

Keyword(s):

Installation Art ◽

Art Practice ◽

Public Performance ◽

Open Spaces ◽

Movement Perception ◽

Movement Performance ◽

Interactive Relationship ◽

The Media ◽

The Spectator

Since Ballet Frankfurt was reconstituted as the Forsythe Company in 2004, William Forsythe has increasingly explored formats of installation art practice. Works such as Human Writes (in collaboration with Kendall Thomas, 2005) and You made me a monster (2005) develop within an interactive and intermedial space and experiment with new ways to experience the production and perception of movement. “Performance installation” is the new term for this intertwined process of movement production and movement perception. The choreographic composition itself grows out of procedures of performative sensing by the dancers, which spreads to onlookers. This multiplex awareness of movement for which the dancer's body is the medium constitutes what I shall call the “media-body” as an essential moment of performance installation as choreographic event. Compared to earlier Forsythe installations—which he called “choreographic objects”—like White Bouncy Castle (1997), City of Abstracts (2000), or Scattered Crowd (2002), with their accessible spaces of movement (in White Bouncy Castle the spectator was a visitor moving about freely inside a white inflatable castle, and City of Abstracts featured choreographic projections of movement on large screens in open spaces) performance installations take place squarely in the theatrical context: in theater lobbies, exhibit halls, or accessible public performance spaces where dancers and the audience come together in a mutually shared yet operationally divided space that leads them into an interactive relationship.

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