Cognitive and executive functions of top level para-karate athletes with intellectual disability.

There is certain empirical evidence of, on the one hand, a positive correlation between executive functions (EFs) and intelligence in people with intellectual disability (ID) and, on the other hand, a slower rate of development of EFs in these people relative to people without ID. This evidence is not, however, unequivocal, and further studies are required. We analysed the relationship between development of EFs and both age and intellectual capacity, in a sample of 106 students with either ID or borderline intellectual functioning (BIF) at a special education centre [63 boys and 43 girls, 11-18years old, mean total intelligence quotient (TIQ) of 59.6]. We applied nine instruments to evaluate both neuropsychological development (working memory, inhibitory control, cognitive flexibility, planning, processing speed and verbal fluency) and behavioural development [teachers' perceptions of the EFs of their students by Behavior Rating Inventory of Executive Function - Second Edition (BRIEF-2) School]. ID and BIF groups were statistically compared in terms of mean performance measures in EF tests. We looked at the correlation between EFs and age, and correlations between EFs and intelligence: TIQ, fluid intelligence [measured by the perceptual reasoning (PR) sub-index of Wechsler Intelligence Scale for Children-IV (WISC-IV)] and crystallised intelligence (measured by the verbal comprehension (VC) sub-index of WISC-IV). Regression models were built for variables with strong correlation. In most of the tests used to evaluate EFs, the ID subgroup performed significantly worse than the subgroup with BIF. In general, teachers' thought that participants had 'medium-low' levels of EFs. TIQ, by WISC-IV scale, correlated significantly with scores in all tests for all EFs. The PR sub-index correlated significantly with 14 of the tests for EFs; 35% of the variation in PR can be explained by variation in performance in Picture Span (working memory) and Mazes (planning). The VC sub-index correlated weakly with seven of the EF tests. We found significant correlations in the ID group between age and scores in all tests of working memory and inhibitory control. Age - considering all participants - did not correlate with any of the variables of teachers' perception except for working memory, and this correlation was not strong. The results of our study are consistent with descriptions of the typical population: (1) fluid intelligence is more related to EFs than crystallised intelligence is; and (2) working memory capacity is the EF most strongly related with general, fluid and crystallised forms of intelligence. The results suggest that as children and adolescents with ID/BIF get older, their capacities for working memory and inhibitory control increase; development of the other EFs studied was less evident. Teachers' perceptions of the EFs of children with ID or BIF were independent of intellectual capacity and age. More research is needed to delve further into the development of EFs in people with ID/BIF.

Introduction: Karate is a highly popular martial art that involves participants from various age groups. In the kumite category, athletes are required to have optimal physical abilities such as speed, agility, and endurance to maintain competitive advantage. Objective: Therefore, this study aims to compare the effects of plyometric training and ladder drills on speed, agility, and VO2max in karate athletes. Methodology: The participants in this study included 30 karate (kumite) athletes aged 18-20 years with an average weight of 60.88±7.5 kg, who were divided into three groups: (A1; n=10) control group, (A2; n=10) plyometric group, and (A3; n=10) ladder drill group. Training was conducted with a frequency of 3x/week for 6 weeks. Speed, agility, and VO2max were measured before and after the intervention in all groups. Data analysis was conducted using one-way ANOVA followed by the Least Significant Difference (LSD) post-hoc test with a 5% significance level. Results: The results showed that plyometric and ladder drill training for 6 weeks significantly improved the physical performance of karate athletes (p ≤ 0.05). Plyometric training was proven to be more effective in increasing sprint speed and aerobic capacity (p ≤ 0.05), while ladder drill training was more effective in improving agility (p ≤ 0.05). Conclusions: This study found that the use of plyometric and ladder drill training in karate athletes is highly effective in improving speed, agility, and VO2max in Kumite athletes, providing practical guidance for coaches in designing effective and targeted training programs to enhance the physical performance of karate athletes.

The Impact of COVID-19 on Individuals With Intellectual and Developmental Disabilities: Clinical and Scientific Priorities.

Karate is one of the martial arts in Indonesia that is competed internationally. One of the kicking techniques in karate is the mawashi geri kick. In martial arts, the frequency of this kick is very important. This technique, if it hits the target quickly and accurately, will result in 3 points in one mawashi geri kick. This study aims to prove the provision of sport massage for karate athletes in order to improve fitness and accuracy in mawashi geri kicks in karate athletes at Dojo SMAN 2 Praya. Muscle tension is part of the symptoms of Delayed Onset Muscle Soreness (DOMS), and is usually complained of by athletes after 12-24 hours of high-intensity training. Muscle tension can be overcome with various methods, one of which is using the sport massage method to relax muscle tension that occurs in karate athletes at Dojo SMA 2 Praya. This study is experimental with a pre-test and post-test control group design, conducted at SMA 2 Praya. The research subjects were 16 people where the researcher will conduct a test before and after being given a sports massage to determine the extent of the effect of giving sports massage on the physical fitness of karate dojo athletes at Sma 2 Praya. Hypothesis testing was carried out using the t-test (independent samples test). In accordance with the hypothesis testing, if t count> t table then H0 is rejected and Ha is accepted. Likewise, if t count <t table then H0 is accepted and Ha is rejected.

Executive function is a concept for higher-order cognitive functions, which have the role of controller and modulator of cognitive abilities. The consensus in the literature is that people with an intellectual disability perform significantly lower on executive function tasks than groups matched on chronological age. The comparison with groups matched on mental age is less clear. Therefore, the objective of this meta-analysis was to investigate to what extent executive function is impaired in people with intellectual disability compared with a typically developing control group matched on mental age. It was also investigated if the executive function component and intellectual disability aetiology moderated the effect. Eligibility criteria were participants with intellectual disability (IQ≤75) without a dual diagnosis; a comparison group matched on mental age; executive function outcome reported in a group comparison study design with n≥10. Working memory tasks and ratings of executive function were not included. The literature search yielded 6637 potentially interesting articles. Twenty-six studies (with 99 effect sizes) including 1395 participants were included in the quantitative synthesis. A multilevel random-effects meta-analysis found that people with intellectual disability performed statistically significantly lower than the mental age-matched group on the executive function tasks, g=-0.34, 95% confidence interval=[-0.53, -0.16]. However, the heterogeneity between effect sizes was large. The intellectual disability aetiology moderator was significant, but it only reduced the heterogeneity marginally. The overall conclusion is that individuals with an intellectual disability have more problems with executive function tasks than mental age-matched controls. Limitations are the large unexplained variance and the remarkably high number (69) of different tests that were used, which make more detailed conclusions problematic. This meta-analysis implies that future studies need to be of better quality, to have higher power, and to a higher degree use the same executive function tests.

The components of intrapersonal and interpersonal intelligence have been widely studied in the psychological domain of emotional intelligence. Intrapersonal intelligence is closely related to the individual's ability to recognize, regulate, and express one's feelings and emotions. The purpose of this study was to examine the relationship between intrapersonal and interpersonal intelligence with teamwork and the performance of athletes in the sport of karate. This research method is descriptive quantitative with a correlational research design. The population of this research is the beginner karate athletes in the said team number in Cianjur Regency with a total of 21 athletes. With characteristics: (1) Team kata karate athletes in Cianjur Regency who have received an intensive training program, (2) Age level is between 12-16 years, (3) Has practiced karate for at least 1 year, (4) Minimum belt level is yellow. The sampling technique in this study uses total sampling. The conclusion of this study shows that intrapersonal intelligence and interpersonal intelligence have a significant influence on teamwork for team kata athletes in karate sports, teamwork team kata athletes karate can be explained or influenced by variables of intrapersonal intelligence and interpersonal intelligence by 24.9%, while 75.1% is influenced by variables that are not studied, intrapersonal and interpersonal intelligence do not have a significant influence on the performance of team athletes in karate, the performance of team athletes in karate is influenced by variables of intrapersonal intelligence and interpersonal intelligence of 0.56 %, while the remaining 99.44% is influenced by variables not examined.

AimA pilot cluster randomized controlled trial was performed to evaluate the effects of a music group intervention and a leisure activities group intervention on well-being, self-esteem, social acceptance, challenging behaviour and three components of executive functions (inhibitory control, cognitive flexibility and visual working memory) of adults with intellectual disabilities (ID). MethodTwenty-nine participants living in four residential facilities for people with ID were randomized into a music or a leisure activities group intervention. Sixteen weekly sessions of one hour were performed with six to eight participants per group. Measurements were carried out at baseline, post-intervention and 11 weeks follow- up. Results were analysed with linear mixed models. ResultsThe leisure activities group intervention improved more than the music group intervention on internalizing behaviour overall and on inhibitory control at post-intervention. However, further analyses showed that this improvement was only significant in one of the two leisure activities facilities. ConclusionA leisure activities group intervention seems a promising intervention to improve internalizing behaviour and inhibitory control of younger adults with mild ID. Implications for the delivery of leisure activities group interventions and especially music group interventions are discussed. What this paper addsInvolvement in leisure activities of people with ID is associated with better well-being, an improvement in social skills and a reduction in emotional and behavioural problems. Active music making, as a specific form of leisure activities, seems to improve well-being, social acceptance and challenging behaviour (CB) as well. Moreover, in different (non-clinical) groups a significant effect of active music making has been found on self-esteem and executive functioning (EF). So far, little attention has been paid to the possible positive effects of active music making on adults with ID. In the current paper, a randomized controlled trial (RCT) was conducted to compare the post-intervention and follow-up measurements with baseline measurements between a music group intervention and a leisure activities group intervention on well-being, self-esteem, social acceptance, CB and EF in adults with ID. Multilevel models were used to detect possible intervention effects of 16 weekly sessions. Overall, inhibitory control and internalizing behaviour improved more amongst the participants of the leisure activities group than amongst the participants of the music group. This was mainly the case for younger participants who had mild ID. These effects are discussed and recommendations regarding the improvement of a music intervention for people with ID are presented.

The authors reviewed 35 open-label sertraline trials for executive impairment in ischemic cerebrovascular disease. Outcomes included clock-drawing, the Executive Interview (EXIT25), the Geriatric Depression Scale, and the Mini-Mental State Examination. Clinically "meaningful" improvement was defined as a >3.0 EXIT25 point decline from baseline. "Remission" was defined as the achievement of an EXIT25 score <15/50. Only EXIT25 scores improved significantly. Twenty patients (57.1%) experienced a clinically meaningful improvement in executive control function. Twelve (34.3%) achieved remission. Our findings suggest that sertraline may have both statistical and clinically meaningful effects on executive control function in ischemic cerebrovascular disease. The authors discuss the implications for future clinical trials.

Introduction: It is well known that the body composition of an athlete plays a critical role in sports performance. However, although many studies exist concerning the kinanthropometric attributes of mainstream sports, few studies are forthcoming on individual martial arts disciplines, especially in elite athletes. Objective: This study aimed at establishing the kinanthropometric attributes of Judo, Karate, and Taekwondo athletes. Methods: Thirty-eight elite male Judo (n=42, mean age: 21.7±2.9 years), Taekwondo (n=46, mean age: 21.1±2.6 years) and Karate (n=50, mean age: 21.3±3.0 years) athletes were chosen randomly. The study determined and compared stature, body mass (BM), body mass index (BMI), fat mass (FM), lean body mass (LBM), body surface area (BSA), sum of skinfolds (∑SK3), percentage body fat (%BF), and somatotype. Results: The findings of the present study demonstrate that although within normal levels, the sampled Judo athletes have significantly (p&lt;0.05) higher FM, ∑SK3 (particularly at the triceps and subscapular skinfold sites), %BF and lower percentage LBM that either the Taekwondo and Karate athletes. In addition, the sampled Judo athletes displayed a more significant (p&lt;0.05) endomorphic somatotype when compared to the Taekwondo and Karate athletes. Conclusions: These findings are essential in determining the optimal kinanthropometric attributes of elite male Judo, Karate, and Taekwondo athletes and may assist in the context of talent identification.

Although attention-deficit/hyperactivity disorder (ADHD) is believed to impair EF, research using EF tests shows such deficits exist in only a minority of those with ADHD. This study hypothesized that this disparity is largely due to the low ecological validity of these EF tests. A 91-item rating scale of EF was constructed based on EF theories and found to represent 5 underlying dimensions: Self-Management to Time, Self-Organization/Problem-Solving, Self-Discipline, Self-Motivation, and Self-Activation/Concentration. Three groups were compared on these scales: Adults with ADHD (N = 146), Clinical control adults not diagnosed with ADHD (N = 97), and a Community control group (N = 109). The ADHD group had more severe EF ratings than did the Clinical group and Community control groups on all 5 scales using both self and other-reported versions. Relationships between the EF scales and tests were low and mostly not significant. Most ADHD adults were clinically impaired on the EF ratings but only a small minority were so on the tests. The EF ratings were more highly associated with measures of deviant behavior (antisocial acts, crime diversity, negative driving outcomes) than the EF tests, most of which were unrelated to such behavior. These results agree with previous research showing that EF tests are largely unrelated to EF ratings and that EF ratings are more strongly associated with impairment in major life activities, in this case deviant or antisocial behavior. Contrary to earlier conclusions based on EF tests, adult ADHD involves substantial problems in EF in daily life.

Inhibitory control (IC) is defined as the executive functioning (EF) and self-regulatory temperamental inhibition of impulsive or pre-potent behavior and has been consistently linked to multiple forms of childhood cognitive and socio-emotional maladjustment including academic and learning challenges, externalizing behaviors, and attention deficit hyperactivity disorder. However, the results of relevant investigations are somewhat dependent on the method of IC assessment and the theoretical approach of the researcher. The two primary theoretical perspectives on IC are the temperament and the EF approaches, and although there is considerable overlap between these perspectives, there are some distinctions with regard to assessment and emphases on cognition vs. emotion. Therefore, investigations including both temperament and EF approaches to IC are of considerable interest and will best inform future education, prevention, and intervention efforts. This investigation examined associations between child IC, working memory (WM), receptive vocabulary, externalizing behavioral problems, and primary caregiver depression and anxiety symptoms using a family study design. The sample was composed of 99 families with two typically developing preschool children (n = 198; 2.5–5.5 years old; M = 3.88, SD = 1.04) and one primary caregiver/parent. Child IC was assessed using a multi-method approach consisting of one parent-rated questionnaire, three independent observer rating subscales, two videotaped in-person laboratory temperament episodes, and an EF Stroop task. Child WM and receptive vocabulary were measured in the laboratory using standard assessment techniques, and the remaining measures were parent-reported. Male child participants had significantly higher levels of observer-rated hyperactivity and impulsivity, and females had higher levels of observer-rated attention and Stroop-assessed IC. Correlational results showed that excepting IC-Stroop and a snack delay task, all IC measures were significantly correlated. All IC measures except snack delay were positively correlated with WM, and with receptive vocabulary (except Lab-TAB snack delay and observer-rated hyperactivity), and WM and receptive vocabulary were also positively correlated. All IC variables, WM, and receptive vocabulary were significantly related to externalizing behavior problems. Generally, children with higher IC, WM, and receptive vocabulary had lower levels of behavioral maladjustment. Lower parent-rated IC and higher levels of externalizing behavior problems were positively associated with maternal depression and anxiety (lower receptive vocabulary level was related to depression only). Employing structural equation modeling (SEM) analyses, we further examined the interrelationships among IC temperament variables, IC-Stroop, WM, and receptive vocabulary, controlling for age, gender, externalizing behaviors, maternal depression and anxiety, and the parent-rater variance (the multi-method effect). The results of our hypothesized model showed that the IC Temperament factor, composed of the six temperament IC measures, showed a positive effect on receptive vocabulary, while the IC-Stroop positively predicted WM. The IC Temperament factor and IC-Stroop were positively correlated with each other, and the IC Temperament factor, IC-Stroop, WM, and receptive vocabulary were positively related to age. The IC Temperament factor was also associated with fewer externalizing behavior problems, maternal depression had a negative effect on receptive vocabulary, and females showed lower levels of WM and receptive vocabulary than males. Overall, the IC Temperament factor and other covariates together accounted for 22.5% of the variance in vocabulary, whereas IC-Stroop and other controlled variables could explain 49.8% of the variance in WM. These findings indicate that theoretical perspectives (in this case temperament and EF IC contexts) and the different types of assessments used are crucial considerations when interpreting the results of studies of early childhood IC. Although most assessments of IC were associated with the outcomes under study, we found specific associations between temperament measures of IC and receptive vocabulary as well as externalizing, and IC-Stroop and WM. In addition, maternal depression had an effect on receptive vocabulary, emphasizing the developmental importance of family environment in preschool. These findings are relevant to the field of child development because they address several important questions about child EF and self-regulation. 1. Do temperament and EF conceptions of IC differentially predict outcomes? 2. How does the way we measure IC from the EF and self-regulation/temperament perspectives impact our conceptualizations of these important constructs? 3. How can we reconcile the various ways different disciplines define IC and their independence/overlap? 4. How can multi-method and multi-disciplinary perspectives and data collection approaches be combined to better understand both the temperament and EF conceptions of IC? Future studies with this sample will employ this multi-theoretical and multi-method approach on assessment in preschool to predict temperament, EF, and behavioral and academic adjustment in elementary school longitudinally.

BackgroundInhibitory control and attention processing atypicalities are implicated in various diseases, including autism spectrum disorders (ASD). These cognitive functions can be tested by using visually guided saccade-based paradigms in children, adolescents and adults to determine the time course of such disorders.MethodsIn this study, using Gap, Step, Overlap and Antisaccade tasks, we analyzed the oculomotor behavior of 82 children, teenagers and adults with high functioning ASD and their peer typically developing (TD) controls in a two-year follow-up study under the auspices of the InFoR-Autism project. Analysis of correlations between oculomotors task measurements and diagnostic assessment of attentional (ADHD-RS and ADHD comorbidity indices) and executive functioning (BRIEF scales) were conducted in order to evaluate their relationship with the oculomotor performance of participants with ASD.ResultsAs indicated by the presence of a Gap and Overlap effects in all age groups, the oculomotor performances of ASD participants showed a preserved capability in overt attention switching. In contrast, the difference in performances of ASD participants in the Antisaccade task, compared to their TD peers, indicated an atypical development of inhibition and executive functions. From correlation analysis between our oculomotor data and ADHD comorbidity index, and scores of attention and executive function difficulties, our findings support the hypothesis that a specific dysfunction of inhibition skills occurs in ASD participants that is independent of the presence of ADHD comorbidity.LimitationsThese include the relatively small sample size of the ASD group over the study’s two-year period, the absence of an ADHD-only control group and the evaluation of a TD control group solely at the study’s inception.ConclusionsChildren and teenagers with ASD have greater difficulty in attention switching and inhibiting prepotent stimuli. Adults with ASD can overcome these difficulties, but, similar to teenagers and children with ASD, they make more erroneous and anticipatory saccades and display a greater trial-to-trial variability in all oculomotor tasks compared to their peers. Our results are indicative of a developmental delay in the maturation of executive and attentional functioning in ASD and of a specific impairment in inhibitory control.

To contrast the effects of total sleep deprivation (TSD) on executive and non-executive function in volunteers homozygous for either the short or long variant of a variable number tandem repeat polymorphism in PERIODS, which is a genetic marker for susceptibility to the negative effect of sleep loss on waking performance. Following two laboratory nights of baseline sleep, both groups underwent an approximately 40-hour constant routine, performing brief tests of executive, memory, attention, and motor function every 2 hours. Clinical Research Centre. Fourteen PER3(4/4) (homozygotes for shorter variant of the gene) and 10 PER3(5/5) (homozygotes for longer variant) healthy, young adults (mean 25.0 +/- 1.0 years). Total sleep deprivation (approximately 40 hours) following baseline sleep. Hormonal assays established that melatonin levels, which reflect circadian phase, reached their midpoint around 04:00 in both genotypes. Cognitive performance deteriorated across the night, and was similar for both genotypes throughout, except 2-4 h after the midpoint of the melatonin rhythm. Only at this time-point and only on tests of executive function (e.g., 3-back, paced visual serial addition task) did PER3(5/5) participants perform reliably worse. Covariance analyses controlling for genotype dependent differences in homeostatic sleep pressure derived from principal component analysis of baseline sleep latency, slow wave sleep and wake after sleep onset largely removed these early morning differences in executive function. This PER3 polymorphism differentially influences the effects of sleep deprivation on executive and non-executive function in the early morning. These effects appear to be mediated through homeostatic sleep pressure.

It has been suggested that napping is the best recovery strategy for athletes. However, researches on the impacts of napping on athletic performances are scarce. The aim of this study was to determine the effects of a 30-min nap after a partial sleep deprivation, or a normal night condition, on alertness, fatigue, and cognitive and physical outcomes. Thirteen national-level male karate athletes were randomized to experience nap and no-nap conditions, after either a reference or a partial sleep deprivation night. The nap lasted 30 min at 1:00 PM. The postnap testing session started at 2:00 PM by quantifying subjective alertness and fatigue. Cognitive and physical performances were respectively measured before and after the karate-specific test (KST) by simple reaction time (SRT) test, lower reaction test (LRT), mental rotation test (MRT), squat jump (SJ), and counter movement jump (CMJ) tests. After a reference night, the nap improved alertness and cognitive outcomes (SRT, LRT, and MRT). No effects on subjective fatigue and physical performances were found. After a partial-sleep deprivation, the nap restored subjective alertness and the decrement in performances caused by sleep loss in most of the tests (MRT, LRT, and KST), but no effects were observed in subjective fatigue and CMJ. After the fatigue induced by KST, there was an ergogenic effect of the nap on the physical performances (CMJ and SJ), and a partial psychogenic effect on the cognitive performances (LRT). A 30-min nap enhances cognitive outcomes. It is also an effective strategy to overcome the cognitive and physical deteriorations in performances caused either by sleep loss or by fatigue induced by exhaustive trainings in the afternoon.

BackgroundAssessment of intelligence and executive function (EF) is common in complex neuropsychiatric practice. Although previous studies have shown that EF and intelligence are related, it is unknown whether these constructs relate to one another in a similar manner across different ability groups (mild intellectual disability, borderline intellectual disability and normal/high intelligence). This study therefore examines the relation between three EFs (inhibition, shifting and updating) and intelligence in a heterogeneous psychiatric sample. It is hypothesised that the strength of the relation between intelligence and the three EFs decreases when the level of intelligence increases, in accordance with Spearman's Law of Diminishing Returns.MethodsIn a cross‐sectional, between and within subject design, one of the three intelligence tests (Kaufman Adolescent and Adult Intelligence Test and Wechsler Adult Intelligence Scale – third and fourth editions) and several EF tests (Stroop Colour–Word Test, Trail Making Test and Spatial Working Memory task) were administered to 250 neuropsychiatric inpatients and outpatients (Mage = 39.8, standard deviation = 14.3, 52.8% male). Based upon their full‐scale IQ score, patients were divided into three ability groups (mild intellectual disability, borderline intellectual disability or normal/high intelligence). The relation between EF and intelligence was assessed through analyses of the correlation pattern; groups were compared using analysis of covariance.ResultsAnalyses showed significant correlations between the constructs of EF and intelligence. A significant interaction effect was found for shifting, with highest correlations in the normal to high intelligence group, but not for inhibition and updating.ConclusionsResults support a specific role for shifting in this EF–intelligence relation. The correlational pattern of updating and intelligence, as well as the differential relation of shifting and intelligence across ability groups, suggests that EF tasks may not measure distinct EFs in lower intellectual ability but rely on cognitive primitives such as processing speed. EF tasks can be considered less valid indicators of EF ability. Implications in terms of the need for development of specific tasks to measure cognition in low intellectual ability are discussed.