Expectation of Teaching and Self-Controlled KR in Motor Skills Acquisition: Are There Additive Effects?

Purpose: Recent evidence suggests learning a motor skill with the expectation of teaching it enhances motor learning. The mechanisms underlying this effect seem to be similar to those of another motor learning condition, the self-control of knowledge of results (KR). Considering the similarities between the mechanisms that underlie these conditions, we aimed to investigate the learning effects obtained through expected teaching and self-controlled conditions, and whether these effects would be additive. Methods: Participants practiced a dart-throwing task under one of the following conditions: a) expecting to teach the skill; b) controlling the KR request; c) combining the two previous conditions; and d) receiving KR in a yoked condition with self-controlled participants. In acquisition phase, motivational aspects, strategies for requesting KR and aspects related to the expectation of teaching were assessed according to each condition. Results: Participants with control over KR and/or with the expectation of teaching the skill showed superior learning of the task compared to the control condition. However, the combination of the experimental conditions did not result in additive learning benefits. Increased perceived competence was found in expecting to teach, self-controlled and combined conditions, compared to the yoked group. Additionally, expecting to teach also affected the way and the frequency learners requested KR. Conclusions: Our findings provide important insights toward understanding the effects of expecting to teach, in addition to demonstrating that expecting to teach affects self-controlled KR scheduling and its use during motor skill acquisition.

The influence of audience on sensorymotor performance in university students / A influência de plateia sobre o desempenho sensoriomotor de estudantes universitários

ABSTRACT The present study investigated the influence of audience on the sensorymotor performance in learning the hall of javelin throwing. The experiment was conducted on two separate days, each with a specific condition: 1) with audience (10 attempts); 2) no audience (10 attempts). The 18 students of smaller and higher performance were divided into two groups: disadvantaged (DG) and benefited (BG). The performance and state-anxiety scores (IDATE), the two-way ANOVA and pairwise identified interaction between group and condition, and GP worst performing and most IDATE and GB with better performance and no change in IDATE provided with the audience. In the heart rate, there was no interaction but the main effect for the condition factor for both groups. It can be inferred that the audience influences the sensorymotor performance may cause worsening or improving depend on individual characteristics.

RESUMO O presente estudo investigou a influência de plateia sobre o desempenho sensoriomotor na aprendizagem do arremesso de dardo de salão. O experimento foi conduzido em dois dias distintos, cada um com uma condição específica: 1) com plateia (10 tentativas); 2) sem plateia (10 tentativas). Os 18 universitários de menor e maior desempenho foram divididos em dois grupos: prejudicado (GP) e beneficiado (GB). Nas análises de desempenho e escores de ansiedade-estado (IDATE), a ANOVA two way e pairwise identificaram interação entre grupo e condição, sendo GP com pior desempenho e maior IDATE e GB com melhor desempenho e sem alteração no IDATE na condição com plateia. Já na frequência cardíaca, não houve interação, porém efeito principal para o fator condição para ambos os grupos. Pode-se inferir que, a plateia influencia no desempenho sensoriomotor podendo ocorrer piora ou melhora a depender de características individuais.

Prevalence of disability and associated factors in the elderly / La prevalencia de la discapacidad y los factores asociados en los ancianos / Prevalência de incapacidade funcional e fatores associados em idosos

The aim of this study was to estimate the prevalence and factors associated with functional disability in the elderly. The cross-sectional design was used with a sample of 624 individuals, between 60 and 96 years of age. In the assessment of the elderly interviews and physical performance tests were used. In the inferential data analysis, the Poisson regression was used, p≤0.05. The prevalence of disability was 17.6% for Basic Activities of Daily Living and 46.3% for Instrumental Activities of Daily Living. Functional disability for Basic Activities of Daily Living was associated with increasing age, alcohol consumption, depressive symptoms and frailty; the Instrumental Activities of Daily Living were associated with increasing age, illiteracy, multigenerational family arrangement, hospitalization and fragility. The variables that remained in the explanatory model for the decline of functional capacity should be emphasized in proposals for public policies to promote the health of the elderly.

El objetivo fue estimar la prevalencia y los factores asociados a la discapacidad. Se utilizó diseño transversal, con muestra de 624 individuos de edades comprendidas entre 60 a 96 años. En la evaluación fueron utilizados entrevista y pruebas de rendimiento físico. En análisis de datos inferencial se utilizó regresión de Poisson, p≤0,05. La prevalencia de discapacidad fue 17,6% para las Actividades Básicas de la Vida Diaria y 46,3% en las actividades instrumentales de la vida diaria. La incapacidad funcional para Actividades Básicas de la Vida Diaria se asoció con la edad, consumo de alcohol, síntomas depresivos y fragilidad; actividades instrumentales de la vida diaria se asociaron con la edad, analfabetismo, disposición de la familia multigeneracional, hospitalización y fragilidad. Las variables que se mantuvieron en el modelo explicativo de la disminución de la capacidad funcional deben hacerse hincapié en la elaboración de políticas públicas para promover la salud de los ancianos.

O objetivo deste estudo foi estimar a prevalência e os fatores associados à incapacidade funcional em idosos. O delineamento transversal foi empregado com amostra de 624 indivíduos com idade entre 60 e 96 anos. Na avaliação dos idosos, foram utilizados entrevista e testes de desempenho físico. Na análise inferencial dos dados, foi utilizada a regressão de Poisson, p≤0,05. A prevalência de incapacidade funcional foi de 17,6% para Atividades Básicas da Vida Diária e 46,3% nas Atividades Instrumentais da Vida Diária. A incapacidade funcional para Atividades Básicas da Vida Diária associou-se ao aumento da idade, consumo de bebidas alcoólicas, sintomatologia depressiva e fragilidade; as Atividades Instrumentais da Vida Diária foram associadas ao avanço da idade, analfabetismo, arranjo familiar multigeracional, hospitalização e fragilidade. As variáveis que permaneceram no modelo explicativo para o declínio da capacidade funcional devem ser enfatizadas na proposição de políticas públicas de promoção à saúde de idosos.

Physical activity as an indicator of predictive functional disability in elderly.

To analyze the time spent on physical activity in female and male individuals as a predictor of the absence of functional disability in older adults, a cross-sectional study was conducted with 624 individuals. Receiver Operating Characteristic curves (ROC) were constructed and compared to areas of physical activity by gender and the absence of functional disability. We identified cutoffs of physical activity (minutes / week) to predict the absence of functional disability (CI 95%). It was found that there is a higher area under the ROC curve for the time spent on physical activities in females. It was observed that 280 minutes / week (women) or 410 minutes / week (men) were the best cutoff points for predicting the absence of functional disability. Time spent on physical activity practices can serve as an important indicator to sort priority groups for certain interventions.

Physical activity as an indicator of predictive functional disability in elderly / Atividade física como indicador preditivo para incapacidade funcional em pessoas idosas / Actividad física como indicador de incapacidad funcional predictivo en personas mayores

To analyze the time spent on physical activity in female and male individuals as a predictor of the absence of functional disability in older adults, a cross-sectional study was conducted with 624 individuals. Receiver Operating Characteristic curves (ROC) were constructed and compared to areas of physical activity by gender and the absence of functional disability. We identified cutoffs of physical activity (minutes / week) to predict the absence of functional disability (CI 95%). It was found that there is a higher area under the ROC curve for the time spent on physical activities in females. It was observed that 280 minutes / week (women) or 410 minutes / week (men) were the best cutoff points for predicting the absence of functional disability. Time spent on physical activity practices can serve as an important indicator to sort priority groups for certain interventions.

Para analisar o tempo despendido em atividades físicas, nos sexos feminino e masculino, como preditor da ausência da incapacidade funcional em idosos, procedeu-se ao estudo transversal com 624 indivíduos. Foram construídas curvas Receiver Operating Characteristic (ROC) e comparadas às áreas de atividade física, por sexo e à ausência da incapacidade funcional. Identificaram-se pontos de corte de atividade física (minutos/semana) para predizer a ausência de incapacidade funcional (IC 95%). Encontrou-se maior área sob a curva ROC para o tempo despendido em atividades físicas no sexo feminino. Observou-se que 280 minutos/semana (mulheres) ou 410 minutos/semana (homens) foram os melhores pontos de corte para predizer a ausência de incapacidade funcional. O tempo despendido em práticas de atividades físicas pode servir como importante indicador para seleção de grupos prioritários, visando determinadas intervenções.

Para analizar el tiempo que los hombres y mujeres invierten en actividad física, como un predictor de la ausencia de discapacidad funcional en las personas mayores, se llevó a cabo un estudio de corte transversal con 624 individuos. Se desarrollaron las curvas Receiver Operating Characteristic (ROC) y se compararon con las áreas de la actividad física, por sexo y la ausencia de discapacidad funcional. Se identificaron los puntos de corte de la actividad física (minutos/semana) para predecir la ausencia de discapacidad funcional (IC 95%). Se encontró un área mayor bajo la curva ROC para el tiempo que invierten las mujeres en actividad física. Los resultado sugieren, que 280 minutos/semana (en mujeres) y 410 minutos/semana (en hombres), son los puntos de corte que mejor predicen la ausencia de discapacidad funcional. El tiempo invertido en realizar actividad física, se puede utilizar como un importante indicador para realizar la clasificación de los grupos prioritarios en ciertas intervenciones.