Conditioned Patellar Tendon Reflex Function in Children with and Without Developmental Coordination Disorders

1995 ◽  
Vol 12 (3) ◽  
pp. 250-261 ◽  
Author(s):  
Harriet G. Williams ◽  
Jeanmarie R. Burke
Keyword(s):  
Patellar Tendon ◽  
Developmental Coordination Disorder ◽  
Reflex Response ◽  
Motoneuron Pool ◽  
Coordination Disorders ◽  
Tendon Reflex ◽  
Patellar Tendon Reflex ◽  
Coordination Disorder ◽  
Developmental Coordination Disorders

A conditioned patellar tendon reflex paradigm was used to study the contributions of crossed spinal and supraspinal inputs to the output of the alpha motoneuron pool in children with and without developmental coordination disorders. The basic patellar tendon reflex response was exaggerated in children with developmental coordination disorders. Crossed spinal and supraspinal influences on the excitability of the alpha motoneuron pool were similar in both groups of children. However, there was evidence of exaggerated crossed spinal and supraspinal inputs onto the alpha motoneuron pool in individual children with developmental coordination disorder.

scholarly journals Motion Analysis of Normal Patellar Tendon Reflex

2013 ◽  
Vol 40 (6) ◽  
pp. 836-841 ◽  
Author(s):  
Lai Kuan Tham ◽  
Noor Azuan Abu Osman ◽  
Wan Abu Bakar Wan Abas ◽  
Kheng Seang Lim
Keyword(s):  
Motion Analysis ◽  
Patellar Tendon ◽  
Essential Element ◽  
Qualitative Description ◽  
Reflex Response ◽  
Healthy Population ◽  
Reflex Amplitude ◽  
Tendon Reflex ◽  
Patellar Tendon Reflex ◽  
Input Strength

Background:Reflex assessment, an essential element in the investigation of the motor system, is currently assessed through qualitative description, which lacks of normal values in the healthy population. This study quantified the amplitude and latency of patellar tendon reflex in normal subjects using motion analysis to determine the factors affecting the reflex amplitude.Methods:100 healthy volunteers were recruited for patellar tendon reflex assessments which were recorded using a motion analysis system. Different levels of input strength were exerted during the experiments.Results:A linear relationship was found between reflex input and reflex amplitude (r = 0.50, P <0.001). The left knee was found to exhibit 26.3% higher reflex amplitude than the right (P <0.001). The Jendrassik manoeuvre significantly increased reflex amplitude by 34.3% (P = 0.001); the effect was especially prominent in subjects with weak reflex response. Reflex latency normality data were established, which showed a gradual reduction with increasing input strength.Conclusion:The quantitative normality data and findings showed that the present method has great potential to objectively quantify deep tendon reflexes.

scholarly journals Influence of Age on Patellar Tendon Reflex Response

PLoS ONE ◽  
2013 ◽  
Vol 8 (11) ◽  
pp. e80799 ◽  
Author(s):  
Annapoorna Chandrasekhar ◽  
Noor Azuan Abu Osman ◽  
Lai Kuan Tham ◽  
Kheng Seang Lim ◽  
Wan Abu Bakar Wan Abas
Keyword(s):  
Patellar Tendon ◽  
Reflex Response ◽  
Tendon Reflex ◽  
Patellar Tendon Reflex

scholarly journals Developmental coordination disorders and sensory processing and integration: Incidence, associations and co-morbidities

2017 ◽  
Vol 80 (9) ◽  
pp. 549-557 ◽  
Author(s):  
Susan Allen ◽  
Jackie Casey
Keyword(s):  
Sensory Processing ◽  
Autistic Spectrum Disorder ◽  
Motor Coordination ◽  
Developmental Coordination Disorder ◽  
Body Awareness ◽  
Spectrum Disorder ◽  
Autistic Spectrum ◽  
Coordination Disorders ◽  
Coordination Disorder ◽  
Developmental Coordination Disorders

Introduction Children with developmental coordination disorder or sensory processing and integration difficulties face challenges to participation in daily living. To date there has been no exploration of the co-occurrence of developmental coordination disorders and sensory processing and integration difficulties. Method Records of children meeting Diagnostic and Statistical Manual – V criteria for developmental coordination disorder ( n = 93) age 5 to 12 years were examined. Data on motor skills (Movement Assessment Battery for Children – 2) and sensory processing and integration (Sensory Processing Measure) were interrogated. Results Of the total sample, 88% exhibited some or definite differences in sensory processing and integration. No apparent relationship was observed between motor coordination and sensory processing and integration. The full sample showed high rates of some difficulties in social participation, hearing, body awareness, balance and motion, and planning and ideation. Further, children with co-morbid autistic spectrum disorder showed high rates of difficulties with touch and vision. Conclusion Most, but not all, children with developmental coordination disorder presented with some difficulties in sensory processing and integration that impacted on their participation in everyday activities. Sensory processing and integration difficulties differed significantly between those with and without co-morbid autistic spectrum disorder.

scholarly journals The Effect of Selected Cognitive Games on the Promotion and Stability of Executive Functions in Children With Developmental Coordination Disorders

2021 ◽  
Vol 10 (3) ◽  
pp. 574-587
Author(s):  
Narges Ghaderi ◽  
◽  
Mohamad Ali Aslankhani ◽  
Ehsan Zareian ◽  
Jaleh Baqirli ◽  
...  
Keyword(s):  
Working Memory ◽  
Executive Functions ◽  
Cognitive Flexibility ◽  
Response Inhibition ◽  
Developmental Coordination Disorder ◽  
Control Group ◽  
Coordination Disorders ◽  
And Control ◽  
Coordination Disorder ◽  
Developmental Coordination Disorders

Background and Aims: Children with developmental coordination disorders experience some form of impairment in some executive functions. The present study was designed and conducted to study the effect and retention of cognitive games on the development of three components of executive functions (response inhibition, working memory, and cognitive flexibility) among children with developmental coordination disorders. Methods: The present study was a quasi-experimental study with a control group. Thirty girls aged 7-10 years with developmental coordination disorder Based on the score obtained in the Movement Assessment Battery for Children-second edition (MABC-2) test set and based on the IQ score, were divided into two experimental and control groups. MABC-2 and Cattle and intelligence tests were used for initial screening, and N-Back, Stroop, and Go-NOGO tests measured working memory, cognitive flexibility, and response inhibition. The training protocol consisted of a series of purposeful cognitive and motor games that explicitly considered the development of a specific component of executive functions. Data were analyzed using a combined two-way analysis (2×3) of variance. Results: The findings showed, performance Working memory (P=0.0001) performance, cognitive flexibility (P=0.045), and response inhibition (P=0.010) increased in the experimental group from pretest to posttest, While no such change was observed in the control group. Also, the effect of improving games on working memory (P=0.0001) and response inhibition (P=0.033) was maintained until the retention test. At the same time, there was no significant difference between cognitive flexibility in the retention test of children with developmental coordination disorder in the experimental group and control. Conclusion: Based on the findings, cognitive-motor games effectively improve and maintain working memory, inhibit response, and develop cognitive flexibility. As a result, according to the results of this study and other studies, it can be acknowledged that intervention as a process as a process-oriented therapy with the involvement of the individual in a mental process improves the executive functions of children with developmental coordination disorder and games introduced in this Research is a good framework for designing and implementing high quality and reproducible programs.

IMPLEMENTATION OF A SMARTPHONE WIRELESS GYROSCOPE PLATFORM WITH MACHINE LEARNING FOR CLASSIFYING DISPARITY OF A HEMIPLEGIC PATELLAR TENDON REFLEX PAIR

2017 ◽  
Vol 17 (06) ◽  
pp. 1750083 ◽  
Author(s):  
ROBERT LEMOYNE ◽  
TIMOTHY MASTROIANNI
Keyword(s):  
Machine Learning ◽  
Patellar Tendon ◽  
Angular Rate ◽  
Nearest Neighbors ◽  
Reflex Response ◽  
Ordinal Scale ◽  
Support Vector ◽  
K Nearest Neighbors ◽  
Tendon Reflex ◽  
Patellar Tendon Reflex

The patellar tendon reflex response provides fundamental means of assessing a subject’s neurological health. Dysfunction regarding the characteristics of the reflex response may warrant the escalation to more advanced diagnostic techniques. Current strategies involve the manual elicitation of the patellar tendon reflex by a highly skilled clinician with subsequent interpretation according to an ordinal scale. The reliability of the ordinal scale approach is a topic of contention. Highly skilled clinicians have been in disagreement regarding even the observation of asymmetric reflex pairs. An alternative strategy incorporated the ubiquitous smartphone with a software application to function as a wireless gyroscope platform for quantifying the reflex response. Each gyroscope signal recording of the reflex response can be conveyed wirelessly through Internet connectivity as an email attachment. The reflex response is evoked through a potential energy impact pendulum that enables prescribed targeting and potential energy level. The smartphone functioning as a wireless gyroscope platform reveals an observationally representative gyroscope signal of the reflex response. Three notably distinguishable attributes of the reflex response are incorporated into a feature set for machine learning: maximum angular rate of rotation, minimum angular rate of rotation, and time disparity between maximum and minimum angular rate of rotation. Four machine learning platforms such as the J48 decision tree, K-nearest neighbors, logistic regression, and support vector machine, were applied to the patellar tendon reflex response feature set incorporating a hemiplegic patellar tendon reflex pair. The J48 decision tree attained 98% classification accuracy, and the K-nearest neighbors, logistic regression, and support vector machine achieved perfect classification accuracy for distinguishing between a hemiplegic affected leg and unaffected leg patellar tendon reflex pair. The research findings reveal the potential of machine learning for enabling advanced diagnostic acuity respective of the gyroscope signal of the patellar tendon reflex response.

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