Perceptual and Motor Skills最新文献

Stroboscopic training (ST) effectively enhances visuomotor performance in athletes, yet the dose-response relationship between ST difficulty and performance remains unclear. This study investigated the influence of ST difficulty on visuomotor response times (RTs) and assessed the reliability of RTs under stroboscopic vision.Twenty-two healthy young individuals performed a visuomotor response task on three separate days, responding to light-based stimuli under normal and stroboscopic vision at three difficulty levels (FAST = 6 Hz; MEDIUM = 4 Hz; SLOW = 2.25 Hz). Intraclass Correlation Coefficients (ICC) and Coefficients of Variation (CoV) assessed relative and absolute reliability. Repeated measures ANOVAs examined the effects of difficulty (NORMAL, FAST, MEDIUM, SLOW) and session day (I, II, III) on RTs.Results showed significantly slower RTs at higher difficulty levels (p < .001), while session day had no significant effect. Reliability analysis revealed good to excellent relative reliability for NORMAL, FAST, and MEDIUM conditions, but moderate reliability for SLOW. Absolute reliability was acceptable across all conditions (<5%).These results suggest a dose-response relationship between ST difficulty and RTs. The inter-individual variability in RTs under stroboscopic vision highlights the need for individualized ST difficulties. The high reliability scores suggest that performance changes following ST stem from functional adaptations rather than habituation.

This study focuses on the human decision-making process under temporal and physical constraints. While previous studies have explored how humans respond rapidly to changing situations, this study examined situations that appear static but involve potential dynamic changes. Specifically, we used soccer as a context to analyze mistakes made in sports situations that seem static but assume potential movements and changes. The number of successful kicks and passes in static and quasi-static situations were compared, and the concept of information entropy was used for motion analysis to provide new insights. The results revealed that the number of successful passes in quasi-static situations significantly decreased (count: 320/400 times), indicating that even in quasi-static states, humans make decisions while anticipating dynamic situations, even in quasi-static states (Movement time: 853 ± 121 ms). During this time, there was a large variation (Entropy: 1.64, 1.86 bits) in the direction of the waist and the kicking motion at the moment of the kick. These findings indicate that motion is controlled in anticipation of dynamic situations, even under seemingly static conditions, and emphasize the importance of stability and accuracy in motor control across all situations. This study offers new insights into the psychological understanding of decision-making and behavioral control under complex and dynamic conditions with time constraints, contributing valuable knowledge to the field of psychology.

Cognitive flexibility is crucial for volleyball athletes, enabling swift adaptation to dynamic game situations. While blood flow restriction (BFR) training has been suggested to enhance working memory, its specific effects on cognitive flexibility in volleyball players are not well understood. Therefore, this study investigates the effects of BFR combined with low-intensity aerobic exercise on cognitive flexibility in adolescent athletes, with a focus on the role of peripheral catecholamines. A randomized balanced crossover design was employed, involving 20 participants who completed four intervention conditions: sedentary rest, low-intensity aerobic exercise, moderate-intensity aerobic exercise, and BFR with low-intensity aerobic exercise. Post-intervention assessments included measurements of peripheral catecholamine levels and cognitive flexibility, specifically examining shifting costs. The results revealed significant differences in shifting costs across intervention conditions (p < .001). BFR training was associated with significantly higher shifting costs compared to sedentary rest (p < .001), lowintensity aerobic exercise (p < .001), and moderate-intensity aerobic exercise (p = .003). Correlation analysis demonstrated significant negative associations between post-BFR norepinephrine (R = -0.46) and epinephrine (R = -0.48) levels and shifting costs. These findings highlight the potential of BFR training to improve cognitive flexibility in adolescent volleyball players beyond the effects of moderate-intensity aerobic exercise, with practical implications for optimizing training regimens in this population. Additionally, the observed correlations between norepinephrine and epinephrine levels and cognitive performance offer novel insights into the physiological mechanisms underpinning cognitive function in sports contexts.

In this study, drawing on an integrated understanding of the process model of emotion regulation (Gross, 2015) and the control-value theory (Pekrun, 2006), and informed by principles from the complex dynamic systems theory, we used a network analysis to examine the relationships between task engagement, achievement emotions (i.e., enjoyment, boredom and anxiety), and emotion regulation of 348 Chinese college students in English-as-a-foreign language (EFL) classes. We found a relatively strong connection between these constructs, with cognitive appraisal, enjoyment, and emotional engagement being the most central nodes within connections to task engagement, achievement emotions, and emotion regulation, respectively. Notably, strong peripheral relationships emerged between enjoyment and all facets of task engagement, all of which were positively associated with cognitive reappraisal but negatively with boredom. Expressive suppression was positively linked only with boredom and anxiety, whereas cognitive reappraisal was positively associated with social engagement. We found no direct association between task engagement and anxiety or emotion suppression. Collectively, these findings provide novel insights into the emotional underpinnings of students' task engagement in EFL contexts.

Blood flow restricted exercise appears to be more discomforting than the same exercise without blood flow restriction. Changes in discomfort have not been investigated following repeated bouts of isometric exercise. It is possible that the isometric contractions may further trap metabolites resulting in greater discomfort. The purpose was to investigate the effects of six weeks of isometric handgrip exercise on perceived discomfort and willingness to continue with that form of exercise. 135 participants trained three times a week for six-weeks. The training consisted of four sets of 2-min low-intensity contractions (at 30% of their maximal voluntary contraction) with blood flow restriction (LI + BFR) and without blood flow restriction (LI). The maximal contraction group performed four, five second maximal contractions (MAX). Discomfort was measured post-exercise on the first, ninth, and last training session using the CR10+ scale. Changes in discomfort from the 1^st to the 18^th session were greater in the LI [-1.7 (1.7) AU] (BF₁₀ = 6952.769) and LI + BFR [-1.5 (1.9) AU] (BF₁₀ = 404.996) when compared to MAX group [0.04 (1.5) AU]. There was no difference between LI and LI + BFR (BF₁₀ = 0.241). Although there were differences in discomfort, there was no difference in the desire to continue the same exercise amongst groups (BF₁₀ = 0.208). Discomfort decreased more in both low intensity groups compared to the MAX group. Despite greater decreases in discomfort there was no difference in willingness to continue with the same form of exercise. This suggests other factors besides discomfort may influence an individual's willingness to continue with the same type of exercise.

AimWhile there are several conservative therapy methods used for patients with chronic low back pain (CLBP), there remains a need for more holistic approaches. This pilot study was designed to evaluate the effectiveness of Basic Body Awareness Therapy (BBAT) in patients with CLBP.MethodsTwenty-eight patients with CLBP, 14 in the Conventional Therapy (CT) group and 14 in the BBAT group, were included in our study. Both groups received CT for 6 weeks, which included electrotherapy, hot pack, and general exercises. The BBAT group received BBAT in addition to CT. The Short Form McGill Pain Questionnaire (SF-MPQ) was used to assess pain, the SF-12 was used to evaluate quality of life and the Awareness Body Chart (ABC), Body Awareness Questionnaire (BAQ) and Fremantle Back Awareness Questionnaires (FreBAQ) were used to evaluate body awareness. Oswestry Disability Index (ODI) and Physical Impairment Index were used to assess disability.ResultsGreater improvements were observed in BBAT group compared to CT group in the emotional index and total scores of the SF-MPQ, as well as the SF-12 mental health scores (p < .05). BBAT produced greater improvements in body awareness values for the cervical-lumbar region, chest/abdomen, back, shoulder, thigh/hip, lower leg, and overall score of the ABC compared to CT (p < .05). However, there were no significant differences between the groups in the FreBAQ and BAQ scores (p > .05).ConclusionIn patients with CLBP, the addition of BBAT to CT resulted in positive outcomes such as increased body awareness, decreased pain, and improved mental health.

Objective: This study examined whether dual-task (DT) cognitive-locomotor interferences are present among young seniors (55-75 years) simultaneously performing a locomotor and a cognitive task of varying levels of complexity while ambulating in a virtual community environment. Method: To assess DT abilities, participants were asked to walk down a virtual mall corridor while remembering a 5-item shopping list. Two levels of complexity for the locomotor (without vs. with obstacles) and the cognitive task (unmodified vs. modified shopping list) were assessed. After measuring the presence of locomotor and cognitive DT costs (DTC) using one sample Wilcoxon signed-rank tests, a nonparametric ANOVA was performed to explore the impact of task complexity on DTC. Spearman coefficients were used to examine the impact of age on DTC. Results: Sixteen participants were recruited. Locomotor and cognitive DTC were observed in all DT conditions, except the easiest combination (no obstacle + unmodified shopping list). These DTC were mainly impacted by the complexity of the cognitive task. They were also positively correlated to age. Discussion: The results highlight the importance of real-life scenarios for accurately describing DT abilities for whom locomotor DTC seems to increase with age despite the absence of daily limitations.

In the present study, we investigated the impact of motivational music and video on gait parameters in older adults with different cognitive styles. Participants (N = 24; M age = 68.83 years, SD = 2.61) were divided into two cognitive style groups: field-dependent and field-independent, based on a hidden figures test. Participants completed a treadmill walking task under three different conditions (motivational music, motivational video, and no intervention). We measured their step width and step length and their hip, knee, and ankle joint angles at heel strike and toe-off. Results showed a significant positive effect of the music condition on step width and stride length and hip joint angle at heel strike, and ankle joint angle at toe-off. There was a significant effect of group (cognitive style) on step width, the angle of the hip joint and the angle of the knee joint at toe-off; however, there was no significant group by condition interaction for any of the assessed variables. Thus, walking with motivational music improved gait parameters in older adults.

Breakfast skipping has been linked to impaired brain function and reduced information processing. While previous studies have focused on its association with academic performance among school children, other important factors, such as cognitive aspects, have received limited attention. Breakfast is the most frequently skipped meal among university students, however, its prevalence and the impact on cognitive performance among university students remain unclear. This study aims to determine the prevalence of breakfast skipping, factors associated with breakfast skipping, and the association of breakfast skipping with cognitive function and academic performance among Malaysian university students. A cross-sectional study was conducted, and 298 foundation and undergraduate students were recruited via convenience sampling. A questionnaire was used to determine sociodemographic, anthropometry data and breakfast consumption habits. Cognitive function was assessed using the location learning test, Digit Symbol Substitution Test and Stroop Test. Academic performance was assessed based on the latest examination grades. Binary logistic regression was performed to determine predictors of breakfast skipping. The prevalence of breakfast skipping among university students was 67.3%. Factors that were significantly associated with breakfast skipping were faculty, parents' education levels, and living status. Students majoring in Arts and Social Sciences were more likely to skip breakfast (AOR = 2.196, 95% CI = 1.310-3.680, p = .003) while lower odds of breakfast skipping were found among students with parents who had higher education levels (AOR = 0.489, 95% CI = 0.245-0.974, p = .042) and students who lived with their parents at home (AOR = 0.513, 95% CI = 0.305-0.861, p = .012). Breakfast skipping was significantly associated with lower academic performance, poorer memory, lower attention and reaction times in executive function. Breakfast skipping has been identified as an urgent public health issue that demands swift intervention strategies from policy makers and university management to promote healthy breakfast habits among university students.

This study aimed to explore athletes' perceptions of referees' judgements in taekwondo competitions using text mining analysis. Participants comprised 100 taekwondo athletes taking part in the World Taekwondo Championships. A total of 898 pieces of identified keywords data were collected on the perceptions of refereeing judgments. The stability and reliability of the referees' judgments were also examined quantitatively. SPSS, KrKwic, and Netminer 4.0 were used to process the data, and descriptive statistics, covariance matrix, and centrality analysis were performed. The study revealed that the overall perception of the referees' judgments, including the head referee's gam-jeom declarations and the assistant referee's punch points, centered on "unfairness" and "inconsistency," confirming that taekwondo competitors perceived referees' judgments as unfair. In particular, 'gam-jeom_declared' was perceived as unfair, and other situations such as 'punch_points,' 'clinch_position,' and 'video_replay'. The overall fairness confidence level was 37.23%, indicating that the players perceived the referees as unfair. The results of this study can be used as a basis for further research on refereeing fairness.