Human Movement Science最新文献

{"title":"Impact of attentional focus and action verbs on bench press performance","authors":"Mitchell Finlay ,&nbsp;David Marchant ,&nbsp;Christina Langley ,&nbsp;Thomas Simpson","doi":"10.1016/j.humov.2025.103385","DOIUrl":"10.1016/j.humov.2025.103385","url":null,"abstract":"<div><div>Verbal instructions that direct an individual's attention are crucial for optimising movement and performance. While previous research has consistently demonstrated that an external focus of attention enhances motor performance more effectively than an internal focus of attention, the role of action verbs embedded within attentional focus instructions remains unexplored. This study aimed to assess how different action verbs (push vs. punch) and attentional focus (external vs. internal) influence bench press velocity. Twenty-six physically active participants familiar with the bench press technique completed four conditions: EF-push, EF-punch, IF-push, and IF-punch. Each condition involved performing bench press repetitions with specific verbal instructions. Results indicated that both external focus conditions led to significantly greater bar velocities compared to internal focus conditions, supporting the constrained action hypothesis. Additionally, the action verb “punch” resulted in higher bar velocities than “push,” suggesting that action words influence motor performance in maximal effort tasks. No significant interaction effects were found between attentional focus and action verbs, indicating that their effects on performance are independent. These findings highlight the importance of using externally focused instructions and carefully chosen action words to enhance performance in strength and conditioning tasks. The study contributes to our understanding of how instructional cues can optimise resistance exercise performance and suggests practical applications for coaches and practitioners in designing effective training interventions.</div></div>","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":"102 ","pages":"Article 103385"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to \"Multifractality in postural sway supports quiet eye training in aiming tasks: A study of golf putting\" [Human Movement Science, (2025) 103341. https://doi.org/10.1016/j.humov.2025.103341].","authors":"Noah Jacobson, Quinn Berleman-Paul, Madhur Mangalam, Damian G Kelty-Stephen, Christopher Ralston","doi":"10.1016/j.humov.2025.103383","DOIUrl":"https://doi.org/10.1016/j.humov.2025.103383","url":null,"abstract":"","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":" ","pages":"103383"},"PeriodicalIF":1.6,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of prosthetic ankle stiffness on adaptation to uneven terrain in individuals with unilateral transtibial amputation","authors":"A.S. Voloshina ,&nbsp;S.H. Collins ,&nbsp;A. Seyfarth","doi":"10.1016/j.humov.2025.103371","DOIUrl":"10.1016/j.humov.2025.103371","url":null,"abstract":"<div><h3>Background</h3><div>Uneven terrain poses significant locomotor challenges for individuals with unilateral transtibial amputation, affecting both gait kinetics and kinematics. Moreover, prosthetic devices are often prescribed for level-ground, although optimal device characteristics, such as stiffness, may vary depending on the terrain.</div></div><div><h3>Research question</h3><div>This study evaluated the interactions between prosthesis stiffness and walking surface height variability on step characteristics and joint mechanics.</div></div><div><h3>Methods</h3><div>Nine individuals with unilateral transtibial amputation participated in the study. Participants walked over a modifiable uneven terrain walkway to create even, low variability, and high variability terrain. On all terrains, participants used ankle-foot prostheses of three different stiffness levels: soft, medium, or stiff. We recorded gait kinetics and kinematics using two in-ground force platforms beneath the walkway and a motion-capture camera system.</div></div><div><h3>Results</h3><div>Terrain variability and prosthesis stiffness affected multiple biomechanical measures, but did not demonstrate any interaction effects between each other. Terrain influenced step parameters such as width, length, and variability measures, while device stiffness affected mean step width and length. Terrain and device stiffness did not significantly affect joint moments or positive joint work. However, stiffness affected the difference in peak ankle and hip moments between the affected and unaffected limbs. Terrain and stiffness effects were present in negative ankle and hip work measures.</div></div><div><h3>Significance</h3><div>On average, individuals with amputation exhibited relatively small changes in joint dynamics when walking on uneven terrain compared to level ground. Additionally, device stiffness had only minor effects on gait outcomes in response to changes in surface. These results suggest that varying ankle stiffness may not be an effective strategy for reducing joint loading or improving gait symmetry during uneven terrain walking.</div></div>","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":"102 ","pages":"Article 103371"},"PeriodicalIF":1.6,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of exercise-induced fatigue on neuromuscular control strategies during lifting tasks: A muscle synergy study based on wavelet packet transform","authors":"Zixin Wang ,&nbsp;Chenxi Hu ,&nbsp;Yanfeng Li ,&nbsp;Xue Chen ,&nbsp;Xianzhi Gao ,&nbsp;Jiaqi Zhang ,&nbsp;Bo Huo","doi":"10.1016/j.humov.2025.103382","DOIUrl":"10.1016/j.humov.2025.103382","url":null,"abstract":"<div><div>Repetitive lifting-related low back pain is a significant health issue among workers, in which fatigue is generally identified as a critical risk factor. However, there is currently a lack of research on the effects of exercised induced fatigue on neuromuscular control patterns, which can be identified through muscle synergy based on the signals of surface electromyographic (sEMG). This study employs a wavelet packet transform (WPT) combined with non-negative matrix factorization (NNMF) to investigate the lifting task from the perspective of muscle synergy and to explore the characteristics of muscle synergy patterns under exercise-induced fatigue. Eleven participants were recruited to perform a repetitive lifting task until subjective fatigue. Utilizing the NNMF method, three modules associated with the lifting task were identified. Notably, the module primarily involving the TA and LES exhibited a higher activation level, indicating that this module requires greater neural resource regulation. However, the effect of fatigue on muscle synergy was not found in NNMF method. Additionally, the WPT-NNMF method revealed that the effects of fatigue on different frequency bands and synergy modules were inconsistent. Overall, as the frequency band increased, the impact of exercise-induced fatigue on muscle synergy intensified, with a more pronounced effect observed in the module characterized by TA and LES compared to the other two modules.</div></div>","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":"102 ","pages":"Article 103382"},"PeriodicalIF":1.6,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Detecting optimal gaze behavior of successful basketball free throwing via machine learning system","authors":"Ayoub Asadi ,&nbsp;Afkham Daneshfar ,&nbsp;Mohammad R. Saeedpour-Parizi ,&nbsp;Christopher A. Aiken ,&nbsp;Ann Smiley","doi":"10.1016/j.humov.2025.103381","DOIUrl":"10.1016/j.humov.2025.103381","url":null,"abstract":"<div><div>Eye tracking in sport is an emerging field that explores the relationships between visual function and motor performance. However, research has shown that visual behaviors are distinct enough to detect superior performance; and serve as a suitable input for designing machine learning systems, few study has been tested yet the eye tracking machine learning in sport tasks. The current research investigated the eye movement behaviors for detecting successful performance using machine learning. The gaze behavior of 25 student basketball players during the hit and miss free- throwing's trials was collected and analyzed by statistical (JMP pro) and machine learning (Python) approaches. Results showed significant differences between saccade duration in hit and miss trials. In previous studies of free throwing, fixations were used as a measure of visual information processing, but our results showed that the metrics related to saccades were more important for successful performance than those related to fixations. These findings highlight the importance of eye tracking machine learning in sport domain and suggest that successful performance can be reliably predicted from performers' eye movement data. Our results provide primary insights as well as inspiration for future research focusing on developing eye-tracking machine learning systems to detect proficiency in motor skills.</div></div>","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":"102 ","pages":"Article 103381"},"PeriodicalIF":1.6,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quiet Eye Training in Virtual Reality and in the Real-World","authors":"Jayke B. Bennett,&nbsp;David L. Neumann,&nbsp;Matthew J. Stainer","doi":"10.1016/j.humov.2025.103370","DOIUrl":"10.1016/j.humov.2025.103370","url":null,"abstract":"<div><div>Virtual Reality (VR) may facilitate skill-learning in ways that have advantages over real-world training. QET was selected due to the wide implementation scope of training in VR, such as adaptive feedback and gaze cueing. Undergraduates who were novice to golf (<em>N</em> = 46) were randomly assigned into one of four conditions based on whether Quiet Eye Training (QET) was received or not, and whether subsequent golf putting practice occurred in the real-world (RW) or in VR. Participants had their golf putting performance and eye-gaze measured at baseline, post-training, and at a 1-week retention. Participants who received QET improved in their real-world putting performance, including number of putts holed and in radial error (distance between ball to hole) baseline-to-post, and baseline-to-retention, while their visuomotor behaviour was more similar to the expert. The performance improvement for QET participants was irrespective of whether they completed practice in VR or in the real-world. When putting in VR, participants who practiced their putting in the real-world (independent of training), improved in their radial error baseline-to-post and baseline-to-retention, while there was no improvement for participants who practiced in VR. The results suggest that QET may facilitate real-world golf putting performance improvement, irrespective of whether practice following the gaze training is conducted in VR or in the real-world. Further, real-world skills may transfer to VR environments, but that skills practiced in VR may need additional training to facilitate real-world performance improvement.</div></div>","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":"102 ","pages":"Article 103370"},"PeriodicalIF":1.6,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Verbal arm swing instructions alter arm-leg interlimb coordination but not prefrontal cortex hemodynamics in people with Parkinson's disease","authors":"Vinicius Cavassano Zampier ,&nbsp;Luis Mochizuki ,&nbsp;Victor Spiandor Beretta ,&nbsp;Vinicius de Belli ,&nbsp;Lilian Teresa Bucken Gobbi ,&nbsp;Fabio Augusto Barbieri ,&nbsp;Diego Orcioli-Silva","doi":"10.1016/j.humov.2025.103367","DOIUrl":"10.1016/j.humov.2025.103367","url":null,"abstract":"<div><div>Verbal instructions related to the arm swing amplitude and velocity change step gait behavior in people with Parkinson's disease (PwPD) and neurotypical individuals. However, how verbal instructions related to upper limb act on interlimb coordination and prefrontal cortex activation are not yet known. Therefore, the aim of this study was to investigate the effects of the instructions to increase arm swing amplitude and velocity during walking on prefrontal cortex (PFC) hemodynamics and arm-leg interlimb coordination in PwPD and neurotypical individuals. Fifteen PwPD and 13 neurotypical individuals walked over a 26.8 m pathway under three experimental conditions: usual walking, walking with increased arm swing amplitude, and walking with increased arm swing velocity. Gait step parameters, continuous relative phase and latency between arm and leg movements, and PFC hemodynamics were calculated. ANOVA two-way (groups x conditions) showed that the verbal instructions to increase arm swing amplitude and velocity during walking improved gait step parameters and arm-leg interlimb coordination, without changing PFC hemodynamics. Specifically, verbal instructions increased average continuous relative phase (F_2,52 = 45.5; <em>p</em> &lt; 0.001; ηp² = 0.63) and decreased the average relative phase variability (F_2,52 = 86.9; p &lt; 0.001; ηp² = 0.77) in both groups and decreased PwPD latency (F_2,52 = 3.5; <em>p</em> = 0.03; ηp² = 0.19). Verbal instructions also increased stride length (F_2,52 = 27.7; <em>p</em> &lt; 0.001; ηp² = 0.51) and velocity (F_2,52 = 46.6; p &lt; 0.001; ηp² = 0.64) and decreased double support phase in both groups. These results allow us to speculate that the engagement of the motor areas to follow the instructions and perform the ensuing action could be related to preservation of some automaticity and it is possible that the participants do not need to use their cognitive resources by increasing PFC activity to process and do the action.</div></div>","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":"101 ","pages":"Article 103367"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imitation of complex whole-body sequence in profoundly hearing-impaired adolescents","authors":"Yukako Fukase ,&nbsp;Ziheng Wang ,&nbsp;So Endo ,&nbsp;Haruki Momma ,&nbsp;Ryoichi Nagatomi","doi":"10.1016/j.humov.2025.103364","DOIUrl":"10.1016/j.humov.2025.103364","url":null,"abstract":"<div><div>Many studies have identified specific visual advantages in deaf individuals. However, few studies have linked these advantages to motor learning. This study aimed to compare the differences in movement and learning processes between profoundly hearing-impaired (HI) and normal-hearing (NH) adolescents by capturing motions that imitate complex whole-body sequences. To analyze multiple parameters simultaneously in a time series and evaluate their similarity to the reference, we used a deep-learning strategy with an autoencoder for anomaly detection. In this study, anomaly detection indicated the difference between the reference and the participants. We set the threshold to 3σ. An analysis targeting the hands showed that HI had a significantly lower anomaly rate than NH in the first imitation; even when checking the trajectory, we found that all HI followed the same pattern as the reference dancer. Compared with NH, HI could capture and reproduce the motion characteristics of the reference in the first trial, especially in the hands, which broadens the perspective of motor instruction for HI adolescents.</div></div>","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":"101 ","pages":"Article 103364"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two sources of performance-stabilizing synergies: An experimental exploration using finger force production","authors":"Valters Abolins ,&nbsp;Edgars Bernans ,&nbsp;Mark L. Latash","doi":"10.1016/j.humov.2025.103369","DOIUrl":"10.1016/j.humov.2025.103369","url":null,"abstract":"<div><div>We explored the hypothesis on two sources of finger force variance in multi-finger accurate force production tasks, related to variability in the sharing of total force among finger forces and to sensory-based covariation of the finger forces. This hypothesis was explored within the space that did not affect task-specific performance variable (the uncontrolled manifold, UCM) and within the space that affected this variable (orthogonal to the UCM, ORT). Young, healthy subjects performed steady-state accurate total force production tasks with and without targets for the individual finger forces. These targets varied in size from 1.5% to 40% of the task total force level. The UCM hypothesis framework was used to quantify the two variance components, V_UCM and V_ORT, across trials and across 0.1-s samples selected from single 30-s trials at 1-s intervals. Across all conditions, V_ORT was similar for the inter-trial and single-trial analyses and across the finger force target sizes. In contrast, V_UCM (typically larger than V_ORT) was smaller during the single-trial analyses compared to the inter-trial analyses. V_UCM also decreased significantly with the drop in the target size for individual finger forces. We interpret these results as pointing at two sources of V_UCM. First, variability in the sharing of total force between the individual finger forces, based on practice, that can be seen from the very beginning of trials. Second, negative covariation of finger forces along individual trials based on visual feedback and, potentially, on loops within the central nervous system. Combining single-trial and inter-trial analyses of variance can provide information on these two sources and turn into a tool to quantify impaired control of movement stability in neurological patients.</div></div>","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":"101 ","pages":"Article 103369"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Multifractality in postural sway supports quiet eye training in aiming tasks: A study of golf putting” Human Movement Science, 76 (2021) 102752","authors":"Noah Jacobson ,&nbsp;Quinn Berleman-Paul ,&nbsp;Madhur Mangalam ,&nbsp;Damian G. Kelty-Stephen ,&nbsp;Christopher Ralston","doi":"10.1016/j.humov.2025.103341","DOIUrl":"10.1016/j.humov.2025.103341","url":null,"abstract":"","PeriodicalId":55046,"journal":{"name":"Human Movement Science","volume":"101 ","pages":"Article 103341"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143617800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}