Effects of Self-Controlled Knowledge of Results on Learning a Taekwondo Serial Skill

2019 ◽  
Vol 126 (6) ◽  
pp. 1178-1194
Author(s):  
M. S. Januário ◽  
L. S. Figueiredo ◽  
L. L. Portes ◽  
R. N. Benda
Keyword(s):  
Motor Skills ◽  
Retention Test ◽  
Degrees Of Freedom ◽  
Task Complexity ◽  
Control Group ◽  
Knowledge Of Results ◽  
Target Time ◽  
Sports Skills ◽  
Skills Learning ◽  
Control Feedback

Allowing learners to control feedback has been an effective strategy in motor skills learning. However, most studies of self-controlled (SC) feedback have used simple tasks that may be dissimilar to sports skills that generally demand more degrees of freedom and cognition. Thus, this study investigated the effects of SC knowledge of results (KR) on learning a complex Taekwondo skill. Twenty-four undergraduate volunteers of both sexes, aged 18-35 years, practiced a specific serial Taekwondo skill that was novel to them. We divided participants randomly into SC and yoked groups and compared their performance after they learned a specific displacement sequence, finishing with a lateral kick (bandal-tchagui) at a punching bag within a target time span. During acquisition, all participants performed 48 trials divided into six blocks and, on a retention test 24 hours later, they performed 10 more trials. We found that both groups reduced their errors from the first to the last block of the acquisition phase and that the SC group showed a better performance on the retention test, relative to the yoked control group. SC KR participants requested KR mainly after good trials, though they showed no statistically significant differences between trials with and without KR. Their inefficiency in estimating their own errors may have been due to task complexity, since many aspects of the task beyond its temporal requirement demanded the learners’ attention. Our results, using a novel Taekwondo serial skill, confirm and extend the benefits of SC KR from just simple motor learning in past studies to learning complex motor skills.

scholarly journals Effects of relative frequency and delay interval of knowledge of results (KR) in the acquisition of motor skills

2006 ◽  
Vol 1 (1) ◽  
pp. 53-63
Author(s):  
Leandro R. Palhares ◽  
Alessandro T. Bruzi ◽  
Guilherme M. Lage ◽  
João V. A. P. Fialho ◽  
Herbert Ugrinowitsch ◽  
...  
Keyword(s):  
Motor Skills ◽  
Delay Interval ◽  
Motor Skill ◽  
Relative Frequency ◽  
The Other ◽  
Tennis Ball ◽  
Knowledge Of Results ◽  
Target Time ◽  
Serial Task

The purpose of the present study was to identify the effects of relative frequency and delay interval of Knowledge of Results (KR) in the acquisition of a serial motor skill. Sixty students were randomly distributed in 2 experiments, with three groups in each experiment (n = 10). The Experiment 1 investigated the effects of the KR frequency without KR delay interval and the Experiment 2 investigated the effects of the KR frequency with KR delay interval (3 seconds) in the acquisition of a serial motor skill. The serial task consisted of putting a tennis ball into six holes, positioned in a wood platform in a previously determined target time. In both experiments, the subjects performed 60 trials in target time of 2,700 ms, in the acquisition phase. In the Experiment 1, the results showed superiority of G33 in relation to the other groups, during the tests. In the Experiment 2, the results did not show any difference among the groups. These results are discussed with respect to the effect of KR delay interval, showing the role of combination of the variables.  

scholarly journals Effects of the interaction among demonstration, verbal instruction and relative frequency of Knowledge of Results (KR) in motor skill acquisition

2012 ◽  
Vol 7 (2) ◽  
pp. 17-24
Author(s):  
Fernando Carneiro Machado Ennes ◽  
Herbert Ugrinowitsch ◽  
Márcio Mario Vieira ◽  
Rodolfo Novellino Benda
Keyword(s):  
Motor Skills ◽  
Skill Acquisition ◽  
Relative Frequency ◽  
Prior Information ◽  
Skills Acquisition ◽  
Verbal Instruction ◽  
Knowledge Of Results ◽  
Target Time ◽  
Motor Skill Acquisition ◽  
Tennis Balls

Demonstration, verbal instruction and knowledge of results are variables presented during the process of motor skills acquisition but their interaction was not investigated. This question was tested with three frequencies of knowledge of results plus three ways to supply prior information (demonstration, verbal instruction and demonstration added to the verbal instruction). The task consisted of carrying three tennis balls in a predetermined sequence and target time. A hundred eight volunteers participated in the study, divided into nine groups according to the combination of variables. The experiment consisted of the acquisition phase with 60 trials of practice and tests and data reliability was tested through two way ANOVA. The results showed that demonstration and KR conducted to better performance during tests.

Efeitos da interação entre demonstração, instrução verbal e frequência relativa de Conhecimento de Resultados (CR) na aquisição de habilidades motoras

1970 ◽  
Vol 7 (1) ◽  
Author(s):  
Fernando Carneiro Machado Ennes ◽  
Herbert Ugrinowitsch ◽  
Márcio Mário Vieira ◽  
Rodolfo Novellino Benda
Keyword(s):  
Motor Learning ◽  
Motor Skills ◽  
Prior Information ◽  
Acquisition Phase ◽  
Skills Acquisition ◽  
Verbal Instruction ◽  
Data Reliability ◽  
Knowledge Of Results ◽  
Target Time ◽  
Tennis Balls

Abstract: Demonstration, verbal instruction and knowledge of results are variables presented during the process of motor skills acquisition but their interaction was not investigated. This question was tested with three frequencies of knowledge of results plus three ways to supply prior information (demonstration, verbal instruction and demonstration added to the verbal instruction). The task consisted of carrying three tennis balls in a predetermined sequence and target time. A hundred eight volunteers participated in the study, divided into nine groups according to the combination of variables. The experiment consisted of the acquisition phase with 60 trials of practice and tests and data reliability was tested through two way ANOVA. The results showed that demonstration and KR conducted to better performance during tests.Key Words: Motor Learning, Knowledge of Results, Demonstration, Verbal Instruction. 

A Response Evocation Program for /ɝ/

1975 ◽  
Vol 40 (1) ◽  
pp. 92-105 ◽  
Author(s):  
Lawrence D. Shriberg
Keyword(s):  
Service Delivery ◽  
Motor Skills ◽  
Task Analysis ◽  
Professional Issues ◽  
Clinical Experiences ◽  
Program Outcomes ◽  
Program Step ◽  
Skills Learning ◽  
Learning Principles

A response evocation program, some principles underlying its development and administration, and a review of some clinical experiences with the program are presented. Sixty-five children with developmental articulation errors of the /ɝ/ phoneme were administered the program by one of 19 clinicians. Approximately 70% of program administrations resulted in a child emitting a good /ɝ/ within six minutes. Approximately 10% of children who were given additional training on program step failures emitted good /ɝ/'s in subsequent sessions. These preliminary observations are discussed in relation to the role of task analysis and motor skills learning principles in response evocation, clinician influences in program outcomes, and professional issues in service delivery to children with developmental articulation errors.

scholarly journals Distance Motor Learning during the COVID-19 Induced Confinement: Video Feedback with a Pedagogical Activity Improves the Snatch Technique in Young Athletes

2021 ◽  
Vol 18 (6) ◽  
pp. 3069
Author(s):  
Mohamed Abdelkader Souissi ◽  
Achraf Ammar ◽  
Omar Trabelsi ◽  
Jordan M. Glenn ◽  
Omar Boukhris ◽  
...  
Keyword(s):  
Retention Test ◽  
Horizontal Displacement ◽  
Test Session ◽  
Video Feedback ◽  
Control Group ◽  
Maximum Height ◽  
Kinematic Parameters ◽  
School Aged Children ◽  
Cohen’S D ◽  
Cohen's D

The purpose of the present study was to investigate which of two strategies, Video Feedback with Pedagogical Activity (VF-PA) or Video Feedback (VF), would be more beneficial for the remote error correction of the snatch weightlifting technique during the confinement period. Thirty-five school aged children with at least three months of weightlifting experience were randomized to one of three training conditions: VF-PA, VF or the Control group (CONT). Subjects underwent test sessions one week before (T0) and one day after (T1) a six-session training period and a retention test session a week later (T2). During each test session, the Kinovea version 0.8.15 software measured the kinematic parameters of the snatch performance. Following distance learning sessions (T1), the VF-PA improved various kinematic parameters (i.e., barbell horizontal displacements, maximum height, looping and symmetry) compared with T0 (p < 0.5; Cohen’s d = 0.58–1.1). Most of these improvements were maintained during the retention test (T2) (p<0.01, Cohen’s d = 1.2–1.3) when compared withT0. However, the VF group improved only twoparameters (i.e., barbell symmetry and horizontal displacement) at T1 (p < 0.05; Cohen’s d = 0.9), which were not maintained at T2. Better horizontal displacement and looping values were registered during the retention test in the VF-PA group compared with theCONT group (p < 0.05, Cohen’s d = 1.49–1.52). The present findings suggest combining video feedback with pedagogical activity during the pandemic induced online coaching or physical education to improve movement learning in school aged children.

Efficacy of fine motor and balance exercises on fine motor skills in children with sensorineural hearing loss

2021 ◽  
pp. 1-10
Author(s):  
Elsayed S. Mehrem ◽  
Lamyaa A. Fergany ◽  
Said A. Mohamed ◽  
Hany M. Fares ◽  
Roshdy M. Kamel
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Motor Skills ◽  
Motor Performance ◽  
Fine Motor ◽  
Control Group ◽  
Fine Motor Skills ◽  
Significant Difference ◽  
Balance Exercises ◽  
Fine Motor Performance

Background: Childhood hearing impairment is a major disability associated with delayed motor development. The affected Fine motor performance in children with sensorineural hearing loss (SNHL) could be due to dynamic balance deficits and visual-motor incoordination. Objective: This study was designed to investigate the effects of fine motor exercises with or without balancing exercises on fine motor skills in children with SNHL. Methods: One hundred and eighty (180) children their age ranged from 8 to 18 years old diagnosed with SNHL were selected. They were divided into three groups, 60 children (control group) practiced only their ordinary activities of daily living, 60 children (fine motor exercises group) practiced fine motor exercises, and 60 children (fine motor and balance exercise) group practiced fine motor and balance exercises. The outcomes were assessed by the Bruininks Oseretsky Test of the motor proficiency second edition scale (BOT-2). Results: Generally, there was a statistically significant difference between control group and fine motor exercises group where (p <  0.05), besides, there was a statistically significant difference between control group and fine motor and balance exercises group where (p <  0.05). But, there was no statistically significant difference between fine motor exercises group and fine motor and balance exercises group where (p >  0.05). Conclusions: The Fine Motor performance of children with SNHL has been improved by Fine motor with or without balancing exercises according to (BOT-2).

scholarly journals Do Children Benefit External Focus of Attention as Much as Adults? A Motor Learning Study

2017 ◽  
Vol 11 (7) ◽  
pp. 85 ◽  
Author(s):  
Somaye Roshandel ◽  
Hamidreza Taheri ◽  
Amir Moghadam
Keyword(s):  
Motor Skills ◽  
Retention Test ◽  
Attentional Focus ◽  
Focus Of Attention ◽  
Learning Study ◽  
Test Results ◽  
Future Studies ◽  
External Focus ◽  
Internal Focus ◽  
And Task

Recent evidence supports advantages of an external focus of attention on learning motor skills, however, there is a need to retest these finding for children and comparing them with adults. Thus, the purpose of current study was to determine the effect of different attentional focus on learning a motor skill in children and adults. Thirty children (8-12 year) and thirty adults (25-42 years) were randomly assigned to one of four groups: (1) Children external focus of attention (EFA), (2) Children- internal focus of attention (IFA), (3) Adults- External focus of attention (EFA), (4) Adults- internal focus of attention (IFA). Following initial instructions and task demonstration, participants performed 60 darts throwing in six blocks and 24 hours later performed 10 additional throws for retention test. Results revealed that children benefited from EFA and IFA instruction in the same manner, however, adults benefited from EFA more than IFA instruction. Future studies should continue to examine effects of different attentional focus on other skills.

scholarly journals THE MOZAIC EFFECT ON THE IMPROVEMENT OF FINE MOTOR SKILLS OF 3-4 YEARS OLD CHILDREN IN INTEGRATED HEALTH CARE CENTER, THE WORKING AREA OF PUBLIC HEALTH CENTER WAENA JAYAPURA CITY.

2021 ◽  
Vol 5 (2) ◽  
pp. 139-148
Author(s):  
Suryati Romauli
Keyword(s):  
Health Care ◽  
Health Center ◽  
Motor Skills ◽  
Intervention Group ◽  
Integrated Health Care ◽  
Fine Motor ◽  
Average Score ◽  
Control Group ◽  
Fine Motor Skills ◽  
Integrated Health

The Child development speed is unique; it varies due to the child’s nature and its stimulants. Lack of stimulants will affect late fine motoric development of children. Data from the Waena Health Center inform, 190 toddlers have impaired fine motor development. This research objective was to determine the effect of mosaic techniques on the enhancement of fine motor skills in children aged 3-4 years in Integrated Health Care Waena area, Jayapura City. A quantitative descriptive research was done with Two Group Pretest-Postest Group Design. The results before the mosaic technique showed in intervention group, had dubious fine motor skills (55.6%) and 16.6% deviant. Whereas in the control group had dubious fine motor skills (83.3%) and 5.6% deviant. After using mosaic technique the intervention group had fine motor skills (77.8%) and small part doubted (22.2%). The average score after improving fine motor skills in the intervention group was 8, while the control group was 7.1 with independent t-test statistical test at a significance value of 95% ( = 0.05) obtained p-value 0.042 or p <α (0.05), thus there is an effect of mosaic techniques on improving fine motor skills of children at the Integrated Health Care Waena area, Jayapura City. Keyword: Mozaik Technique, Fine motor skill, children age 3-4 tahun

scholarly journals Repetition without Repetition or Differential Learning of Multiple Techniques in Volleyball?

2021 ◽  
Vol 18 (19) ◽  
pp. 10499
Author(s):  
Julius B. Apidogo ◽  
Johannes Burdack ◽  
Wolfgang I. Schöllhorn
Keyword(s):  
Secondary School ◽  
Retention Test ◽  
Secondary School Students ◽  
Control Group ◽  
School Students ◽  
Learning Group ◽  
Differential Learning ◽  
Significant Difference ◽  
Repetitive Learning

A variety of approaches have been proposed for teaching several volleyball techniques to beginners, ranging from general ball familiarization to model-oriented repetition to highly variable learning. This study compared the effects of acquiring three volleyball techniques in parallel with three approaches. Female secondary school students (N = 42; 15.6 ± 0.54 years) participated in a pretest for three different volleyball techniques (underhand pass, overhand pass, and overhead serve) with an emphasis on accuracy. Based on their results, they were parallelized into three practice protocols, a repetitive learning group (RG), a differential learning group (DG), and a control group (CG). After a period of six weeks with 12 intervention sessions, all participants attended a posttest. An additional retention test after two weeks revealed a statistically significant difference between DG, RG, and CG for all single techniques as well as the combined multiple technique. In each technique—the overhand pass, the underhand pass, the overhand service, and the combination of the three techniques—DG performed best (each p < 0.001).

scholarly journals Freeze-thaw decellularization of the trabecular meshwork in an ex vivo eye perfusion model

2017 ◽  
Author(s):  
Yalong Dang ◽  
Susannah Waxman ◽  
Chao Wang ◽  
Adrianna Jensen ◽  
Ralitsa T Loewen ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Trabecular Meshwork ◽  
Degrees Of Freedom ◽  
Ex Vivo ◽  
Fluorescent Microscopy ◽  
Anterior Segment ◽  
Perfusion Culture ◽  
Suicide Gene ◽  
Control Group ◽  
Freeze Thaw

Objective: Trabecular meshwork (TM) is the primary substrate of outflow resistance in glaucomatous eyes. Repopulating diseased TM with fresh, functional TM cells might represent a novel therapeutic breakthrough. Various decellularized TM scaffolds were developed by ablating existing cells with suicide gene therapy or saponin, but always with incomplete cell removal or dissolve the extracellular matrix. We hypothesized that a chemical-free, freeze-thaw method would be able to produce a fully decellularized TM scaffold for cell transplantation. Materials and Methods: We obtained 24 porcine eyes from a local abattoir, dissected and mounted them in an anterior segment perfusion and pressure transduction system within two hours of sacrifice. After they stabilized for 72 hours, eight eyes each were assigned to freeze-thaw (F) ablation (-80°C×2), to 0.02% saponin (S) treatment, or the control group (C), respectively. The trabecular meshwork was transduced with an eGFP expressing feline immunodeficiency viral (FIV) vector and tracked via fluorescent microscopy to confirm ablation. Following treatment, the eyes were perfused with standard tissue culture medium for 180 hours. We assessed histological changes by hematoxylin and eosin staining. TM cell viability was evaluated with a calcein AM/propidium iodide (PI) assay. We measured IOP and modeled it with a linear mixed effects model using a B-spline function of time with 5 degrees of freedom. Results: F and S experienced a similar IOP reduction by 30% from baseline (P=0.64). IOP reduction of about 30% occurred in F within 24 hours and in S within 48 hours. Live visualization of eGFP demonstrated that F conferred a complete ablation of all TM cells and only a partial ablation in S. Histological analysis confirmed that no TM cells survived in F while the extracellular matrix remained. The viability assay showed very low PI and no calcein staining in F in contrast to numerous PI-labeled dead TM cells and calcein-labeled viable TM cells in S. Conclusion: We developed a rapid TM ablation method that uses cyclic freezing that is free of biological or chemical agents and able to produce a decellularized TM scaffold with preserved TM excellular matrix in an organotypic perfusion culture.

Sign in / Sign up

Export Citation Format

Share Document