Perceptual and Motor Skills最新文献

Single-limb stance (SLS) is a demanding postural task, widely used for balance assessment in both research and clinical practice. Despite extensive data on elderly and clinical populations, less is known about younger and healthier adults. Our aim in this study was to assess balance during a SLS task among a cohort of healthy adults to determine whether there are age or sex group or testing condition differences in performances. In this cross-sectional study, we involved 120 participants aged 30-65 years and divided them into four age sub-groups with equal numbers of males and females in each. We assessed balance during a 45-s SLS task on a] the Delos Postural Proprioceptive System for both lower limbs in two conditions - open eyes (OE) and closed eyes (CE). We calculated stability (SI) and autonomy (AU) indices and used analysis of variance to determine that there was no significant effect of limb dominance or sex on balance parameters. However, there was a significant interaction effect between age group and testing condition for both SI and AU (p < .001 for both), with balance worsening as age increased only in the CE condition. These results highlight a pattern of balance decline with age when vision is eliminated from balance performance, underscoring the critical relationship between sensory input and postural control as people age.

We aimed to examine the effects of motor performance improvements produced by practice on corticospinal tract excitability during motor imagery (MI) of identical movements. Participants performed a motor task with no guidelines displayed on the monitor (performance test); the participants only imagined performing the task without performing the movement (MI test), and the participants performed the power output and then adjusted it (exercise). The output force conditions were 20, 40, and 60% of the maximum voluntary contraction, and the objective was for 21 participants to learn each output force condition. The outcome of the performance test was calculated as the difference between the actual motor output and the target. During the MI test, we applied a single transcranial magnetic stimulation during imagery, assessed the corticospinal tract excitability of the right first dorsal interosseous by motor-evoked potential (MEP) amplitude, and recorded the vividness of the MI in each trial. We evaluated performance and MI before practice (Pre-test), after 150 practice sessions (Post-test 1), and after another 150 practice sessions (Post-test 2). The MEP amplitude was significantly reduced at Post-test 2 compared to Pre-test. The vividness of the MI improved with practice. Corticospinal tract excitability during MI decreased as motor performance improved. Thus, actual motor practice was also reflected in the MI of the exercise. Performance improvement was accompanied by a decrease in redundant activity, enhancing the efficiency and appropriateness of the exercise.

In the present study, we addressed (a) Chinese students' level of enjoyment in studying Japanese; (b) the independent and interactive predictive associations of student attitudes towards the Japanese language and their perceived Japanese proficiency with their Japanese classroom enjoyment; and (c) the gender as a potential moderating variable in these relationships. Three hundred participants completed three questionnaires assessing their attitudes towards the Japanese language, perceived Japanese proficiency, and Japanese classroom enjoyment. Descriptive analysis, multiple regression analysis, and path analysis revealed the following: (a) high overall student enjoyment in the Japanese classroom; (b) student attitudes towards both Japanese and their perceived Japanese proficiency were significant positive predictors of their levels of Japanese classroom enjoyment; (c) there was no significant interaction in the relationship between student attitudes towards the Japanese language and their perceived Japanese proficiency and Japanese classroom enjoyment; and (d) gender differences significantly moderated the relationships between perceived Japanese proficiency and Japanese classroom enjoyment, characterized by a stronger relationship among female participants; but gender was not a significant mediator in the relationship between attitudes towards the Japanese language and Japanese classroom enjoyment. We discuss these findings and their pedagogical implications, as well as the limitations of this study and future research directions.

Teaching for creativity (TfC) has recently received increased attention in English-as-a-foreign-language (EFL) contexts. Previous studies confirmed that TfC links with achievement emotions (AEs) in this context. Additionally, a supportive work environment (SWE) has been shown to be associated with AEs. However, relationships among all three variables - SWE, AEs, and TfC - have not been adequately explored in EFL contexts, nor have the underlying bases for these links been elucidated. In this study, we adopted a mixed-methods approach to investigate the complex associations between SWE, AEs (anxiety, pride, enjoyment, and anger), and TfC as perceived by 441 Chinese EFL teachers. Quantitative results revealed that SWE, four AEs, and TfC were significantly correlated, with small to large effect sizes. Furthermore, the four AEs collectively mediated the relationship between SWE and TfC in our structural equation model. Qualitative interviews with 15 EFL teachers provided nuanced insights into possible reasons for these statistical patterns. We discuss the theoretical and pedagogical implications of these findings and suggest directions for future research.