While decisions and actions are commonly measured in assessments of sports performance, one's perception, including our perception of the environment and our ability level, ultimately determines the subsequent decision and action selected. Here, we explored whether expert and less expert soccer players can accurately perceive their ability, and if they can recalibrate these perceptions with on-task practice. Soccer players completed a sensorimotor interceptive task comprised two blocks: viewing (perceived ability) passes at various speeds and a separate condition of running and intercepting (actual ability) a pass at various speeds. Success was determined by a positive response (perceived) or successfully intercepting the pass (actual). Performance error was defined as the difference between perceived and actual ability levels. There was a significant main effect for time on task (p < 0.001), indicating improvement and recalibration in both expert and less expert groups. When introduced to a new sport-related task, athletes may initially overestimate their ability. However, athletes can rapidly reduce these overestimation errors, demonstrating an ability to recalibrate internal models. Expert players demonstrate superior real-time decision-making when compared to less expert players. Specifically, experts made fewer defensive (cautious) errors and displayed more aggressive and advantageous decision-making compared to less experts.

Practice is essential for skill acquisition, yet the psychological traits driving changes that occur with practice remain unclear. We extend previous work that identified grit as a key psychological trait underpinning practice accumulation in football. More specifically, we examined whether similar patterns exist in alpine ski racing, a sport characterized by seasonal constraints and limited practice opportunities. We collected retrospective estimates of practice hours from N = 231 elite youth skiers in Austria and the USA aged 6 to 19 years, alongside current measures of grit’s subcomponents, Consistency of Interests (CI) and Perseverance of Effort (PE). We used Generalized Additive Models (GAM) to analyze nonlinear practice trajectories. CI was positively associated with practice accumulation during early developmental stages up to age 12 years. From age 12 onward, PE became the dominant factor associated with practice. Notably, grit had the most pronounced association on engagement in unstructured practice activities, such as self-training and free play. These findings suggest that grit might impact expertise indirectly by affecting how athletes engage in practice over time. Understanding the differentiated roles of CI and PE in practice accumulation offers valuable insights for talent development programs; we emphasize the importance of fostering psychological traits that support sustained commitment and resilience in athletes.

This study aimed to examine the impact of velocity and acceleration-based differential plyometric jump training on physical performance of youth basketball players. Twenty-six trained youth male players (14.5 ± 1.7 years; U14 [n = 14], U16 [n = 5], and U18 [n = 7]) were grouped into experimental and control groups. The experimental group completed two sessions per week of velocity-based differential plyometric training for 14 weeks (3 sets x 5 jumps with 20-s intervals of passive recovery between jumps and 2-min breaks between sets). Before each repetition, participants received verbal instruction to perform a different fluctuation. The control group continued regular training. Bilateral and unilateral countermovement jump (CMJ) height, the 20-m sprint test, and the Modified 505 Agility (M505) test were evaluated before and after the intervention. The training program yielded statistically significant improvements in the experimental group's CMJ bilateral jump height. Additionally, moderate improvements in the CMJR (Countermovement Jump Right Leg) and M505R (Modified 505 Agility Right) tests (BF10 > 3 to 10) were observed after the training program (δ ranged from 0.66 to 1.12). The control group demonstrated moderate improvements in the M505R (Modified 505 Agility Right) and M505L (Modified 505 Agility Left) tests (BF10 > 3 to 10) (δ = 0.65). Models combining different variables provided the best fit for the data in different physical variables. The results indicate that velocity and acceleration-based differential plyometric training can be a suitable strategy for improving physical performance of youth basketball players.

Domain-specific practice is crucial for expertise. While much is known about practice, less is understood about what motivates individuals to start and continue with the intensive domain-specific practice needed for expert performance. We demonstrate in a large sample (N = 388) of Australian elite youth soccer players that they retrospectively report different amounts of practice at various stages of development and that acquisition is driven by the personality trait of grit. Players reported consistently engaging in domain-specific activities every year from age 8 until 13 years. The estimated logged hours experienced a marked acceleration at the age of 13 years, resulting in an enhanced and curvilinear pattern of practice accumulation. Grittier players, however, start accumulating more practice at the beginning of the talent development process and continue to consistently log more hours throughout the years than less gritty players. Consequently, initially small differences in practice engagement between those with high and low grit scores, snowball into sizable ones at the age of 15 years. The impact of grit on practice accumulation is, however, more subtle, as grit's two components, consistency of interest and perseverance of effort, exert a different pattern of influence. The driving factor of the initial differences and their consistent snowball effect until age 13 years is a consistency of interest, whereas the perseverance of effort aspect impacts the practice acceleration period from age 13 to age 15 years. We elaborate on these findings to explain the complex relationship between grit and practice on the path to performance excellence.

PURPOSE:Although spurts in physical capacities during adolescence are well known, little is known about the existence of such spurts in sport-specific skill development, especially during the period of rapid growth in stature. Our aims were to examine the timing, intensity, and sequence of basketball-specific skill spurts aligned with biological (years from peak height velocity (PHV)) rather than chronological age. We then defined putative sensitive periods (windows of optimal development) for each skill aligned to the adolescent growth spurt. METHODS:Altogether, 160 adolescent male basketballers aged 11-15 yr were tested biannually over 3 consecutive years. The years from attainment of PHV was estimated, and six skill tests were aligned to each year from PHV in 3-month intervals. Skill velocities were estimated using a nonsmooth polynomial model. RESULTS:Maximal gains in slalom dribble occurred 12 months before PHV attainment (intensity, 0.18 m·s -1 ·yr -1 ), whereas in speed shot shooting (intensity, 9.91 pts·yr -1 ), passing (intensity, 19.13 pts·yr -1 ), and slalom sprint (intensity, 0.19 m·s -1 ·yr -1 ), these skill spurts were attained 6 months before PHV attainment. The mean gains in control dribble (intensity, 0.10 m·s -1 ·yr -1 ) and defensive movement (intensity, 0.12 m·s -1 ·yr -1 ) peaks coincided with attainment of PHV. We identified different sized windows for optimal development for each skill. CONCLUSIONS:Peak spurts in skill development, for most basketball skills, were attained at the same time as PHV. The multiple peaks observed within the defined windows of optimal development suggest that there is room for skill improvement even if gains might be greater earlier rather than later in practice. Our findings highlight the need to make coaches aware of where their players are relative to the attainment of PHV because different skills appear to develop differently relative to PHV. Such knowledge may help in designing more relevant training regimes that incorporate the athlete's current growth status so that skill development can be maximized.

There is limited research on female football players, especially related to their physical and cognitive performance under different climactic conditions. We analyzed the impact of a hot environmental temperature on physical performance and anticipation in elite female football players during a fatigue-inducing intermittent protocol. Elite female players (n = 21) performed the countermovement jump (CMJ) and responded to filmed sequences of offensive play under two distinct environmental temperatures (i.e., mild environment temperature- 20 degrees C and 30% rh versus hot environment temperature- 38 degrees C and 80% rh), interspersed by 1-week interval. Linear mixed models were used. CMJ performance declined following the intermittent protocol on both temperature conditions (p < 0.05). Moreover, there were significant main effects for protocol on CMJ speed (m/s) (p = 0.001; eta(2)(p) = 0.12), CMJ power (p = 0.002; eta(2)(p) = 0.11), and CMJ Height(max) (p = 0.002; eta(2)(p) = 0.12). After performing the intermittent protocol, exposure to a hot temperature caused a greater decline in anticipation accuracy (mild temperature = 64.41% vs. hot temperature = 53.44%; p < 0.001). Our study shows impaired performance in elite female football players following an intermittent protocol under hot compared with mild environmental conditions. We report decreased performance in both CMJ and anticipation performance under hotter conditions. The results reveal that exposure to hot temperatures had a negative effect on the accuracy of their anticipatory behaviors. We consider the implication of the work for research and training interventions.

Skilled anticipation is underpinned by the ability to synthesise high- (e.g., context) and low-level (e.g., biological motion) processes. While researchers have highlighted the effect of physiological load on the pick-up of biological motion from an opponent’s kinematics, how such stress affects the use of contextual information has remained unexplored. In this paper, we conducted an experiment to examine how a fatigue-inducing, cricket-specific exercise protocol affects the use of contextual and kinematic information during anticipation. Altogether, 13 skilled batters completed a validated simulated cricket batting task designed to induce physiological responses representative of competition. Before, after, and during the exercise protocol, participants anticipated the end location of bowling deliveries that presented either opponent kinematics, contextual information (field positioning and game situation), or both. Anticipation responses were more accurate during the exercise protocol than at rest. Also, responses were more accurate when contextual information was available compared with when only kinematic cues were presented. Moreover, from the beginning to the end of the protocol, anticipation responses decreased in accuracy in those conditions in which contextual information was presented and increased in accuracy when only kinematic cues were available. We interpret the findings relative to Attentional Control Theory (Eysenck et al., 2007). Findings highlight the complex nature of expert sports performance and indicate that the effect of domain-specific exercise on anticipation is dependent on the physiological load experienced and the type of information available.

We evaluated the effects of engaging in extemporaneous speech in healthy young adults while they walked in a virtual environment meant to elicit low or high levels of mobility-related anxiety. We expected that mobility-related anxiety imposed by a simulated balance threat (i.e., virtual elevation) would impair walking behavior and lead to greater dual-task costs. Altogether, 15 adults (age = 25.6 ± 4.7 yrs, 7 women) walked at their self-selected speed within a VR environment that simulated a low (ground) and high elevation (15 m) setting while speaking extemporaneously (dual-task) or not speaking (single-task). Likert-scale ratings of cognitive and somatic anxiety, confidence, and mental effort were evaluated and gait speed, step length, and step width, as well as the variability of each, was calculated for every trial. Silent speech pauses (> 150 ms) were determined from audio recordings to infer the cognitive costs of extemporaneous speech planning at low and high virtual elevation. Results indicated that the presence of a balance threat and the inclusion of a concurrent speech task both perturbed gait kinematics, but the virtual height illusion led to increased anxiety and mental effort and a decrease in confidence. The extemporaneous speech pauses were longer on average when walking, but no effects of virtual elevation were reported. Trends toward interaction effects arose in self-reported responses, with participants reporting more comfort walking at virtual heights if they engaged in extemporaneous speech. Walking at virtual elevation and while talking may have independent and significant effects on gait; both effects were robust and did not support an interaction when combined (i.e., walking and talking at virtual heights). The nature of extemporaneous speech may have distracted participants from the detrimental effects of walking in anxiety-inducing settings.

Perceptual-cognitive expertise is crucial in domains that require rapid extraction of information for anticipation (e.g., sport, aviation, warfighting). Yet, published reports on the neuroscience of perceptual-cognitive expertise in such dynamic performance environments focus almost exclusively on biological motion processing (i.e., action observation network), leaving gaps in knowledge about the neural mechanisms underlying other frequently cited perceptual-cognitive skills, such as pattern recognition, the use of contextual priors, and global processing. In this paper, we provide a narrative review of research on the neural mechanisms underlying perceptual-cognitive expertise in sport, a domain where individuals possess highly specialized perceptual-cognitive skills (i.e., expertise) that enable successful performance in dynamic environments. Additionally, we discuss how work from domains with more static, predictable stimuli for perception and decision-making (e.g., radiology, chess) can enhance understanding of the neuroscience of expertise in sport. In future, efforts are needed to address the neural mechanisms underpinning less studied perceptual-cognitive skills (i.e., pattern recognition, contextual priors, global processing) and to explore how experts prioritize these skills within different contexts, thereby enhancing our understanding of perceptual-cognitive expertise across numerous professional domains.

During biological motion perception, individuals with perceptual experience learn to use more global processing, simultaneously extracting information from multiple body segments. Less experienced observers may use more local processing of individual body segments. The parietal lobe (e.g., alpha and beta power) has been shown to be critical to global and local static stimulus perception. Therefore, in this paper, we examined how skill impacts motion processing by assessing behavioral and neural responses to degrading global or local motion information for soccer penalty kicks. Skilled (N = 21) and less skilled (N = 19) soccer players anticipated temporally occluded videos of penalty kicks under normal, blurred (degraded local information), or spatially occluded (hips-only; degraded global information) viewing conditions. EEG was used to measure parietal alpha and beta power. Skilled players outperformed less skilled players, albeit both skill groups were less accurate in the blurred and hips-only conditions. Skilled performers showed significant decreases in bilateral parietal beta power in the hips-only condition, suggesting a greater reliance on global motion information under normal viewing conditions. Additionally, the hips-only condition elicited significantly greater beta relative to alpha power (beta - alpha), lower beta power, and lower alpha power than the control condition for both skill groups, suggesting spatial occlusion elicited a shift towards more local processing. Our novel findings demonstrate that skill and experience impact how motion is processed.

Global and local biological motion processing are likely influenced by an observer's perceptual experience. Skilled athletes anticipating an opponent's movements use globally distributed motion information, while less skilled athletes focus on single kinematic cues. Published reports have demonstrated that attention can be primed globally or locally before perceptual tasks; such an intervention could highlight motion processing mechanisms used by skilled and less skilled observers. In this study, we examined skill differences in biological motion processing using attentional priming. Skilled (N = 16) and less skilled (N = 16) players anticipated temporally occluded videos of volleyball attacks after being primed using a Navon matching task while parietal EEG was measured. Skilled players were more accurate than less skilled players across priming conditions. Global priming improved performance in both skill groups. Skilled players showed significantly reduced alpha and beta power in the right compared to left parietal region, but brain activity was not affected by the priming interventions. Our findings highlight the importance of right parietal dominance for skilled performers, which may be functional for inhibiting left hemispheric local processing or enhancing visual spatial attention for dynamic visual scenes. Further work is needed to systematically determine the function of this pattern of brain activity during skilled anticipation.

Practice is one of the most important predictors of skill. To become an expert, performers must engage in practice for a prolonged time to develop the psychological characteristics necessary for outstanding performance. Deliberate practice (DP), that is focused repetitive activities with corrective feedback, is particularly beneficial for skill development. The amount of accumulated DP differentiates experts and novices. However, the predictive strength of DP weakens considerably when it comes to differentiating between differently skilled experts, leaving a way clear for other non-practice related factors to exercise their influence. In this paper, we demonstrate using a large sample (388) of elite youth soccer players that one such factor, the personality trait of grit, predicts expertise level both directly and indirectly. Grittier players accumulated more time in coach-led team practice, the activity, which is arguably closest to DP in team sports, which in turn predicted the skill level. Other practice activities, such as self-led training or playing with peers, were not predictive of skill level, neither were they influenced by grit. Grit, however, continued to exert a direct positive influence on the skill level of players even after accounting for the hours of DP accumulated. Overall, a standard deviation of change in the grit score resulted in at least a third of standard deviation improvement in skill. Our findings highlight the need for the inclusion of additional factors in theoretical frameworks in situations where the predictive power of traditional expertise factors, such as practice, is limited.

We revisit an agenda that was outlined in a previous paper in this journal focusing on the importance of skill acquisition research in enhancing practice and instruction in sport. In this current narrative review, we reflect on progress made since our original attempt to highlight several potential myths that appeared to exist in coaching, implying the existence of a theory-practice divide. Most notably, we present five action points that would impact positively on coaches and practitioners working to improve skill learning across sports, as well as suggesting directions for research. We discuss the importance of practice quality in enhancing learning and relate this concept to notions of optimising challenge. We discuss how best to assess learning, the right balance between repetition and practice that is specific to competition, the relationship between practice conditions, instructions, and individual differences, and why a more "hands-off" approach to instruction may have advantages over more "hands-on" methods. These action points are considered as a broad framework for advancing skill acquisition for excellence (SAFE) in applied practice. We conclude by arguing the need for increased collaboration between researchers, coaches, and other sport practitioners.

The ability to anticipate the actions of opponents is a significant marker of expertise in many sports. The role of non-kinematic contextual information in anticipation has received increasing attention over the last decade. In this article, we review contemporary research focusing on the specific impact of contextual information related to opponents' action tendencies on anticipation in sport. This information can be acquired explicitly when probabilistic information about the preferences of the opponent is provided to the athlete before the action commences, or the athlete can pick up this information through exposure to the actions of the opponent. Regardless of how this information is acquired, it has been shown to influence anticipation performance and underlying processing priorities on a wide range of sport tasks. However, factors such as sport-specific expertise, informational reliability, task load, and judgment utility moderate these effects. We discuss methodological issues and gaps in existing knowledge and provide guidance for how to develop more representative research designs in future. Finally, we highlight practical implications that may help coaches and performance analysts in predicting the effectiveness of priming athletes with information about the action tendencies of opponents in various performance situations.

Expert performance across a range of domains is underpinned by superior perceptual-cognitive skills. Over the last five decades, researchers have provided evidence that experts can identify and interpret opponent kinematics more effectively than their less experienced counterparts. More recently, researchers have demonstrated that experts also use non-kinematic information, in this paper termed contextual priors, to inform their predictive judgments. While the body of literature in this area continues to grow exponentially, researchers have yet to develop an overarching theoretical framework that can predict and explain anticipatory behaviour and provide empirically testable hypotheses to guide future work. In this paper, we propose that researchers interested in anticipation in sport could adopt a Bayesian model for probabilistic inference as an overarching framework. We argue that athletes employ Bayesian reliability-based strategies in order to integrate contextual priors with evolving kinematic information during anticipation. We offer an insight into Bayesian theory and demonstrate how contemporary literature in sport psychology fits within this framework. We hope that the paper encourages researchers to engage with the Bayesian literature in order to provide greater insight into expert athletes’ assimilation of various sources of information when anticipating the actions of others in complex and dynamic environments.