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Human movement science 38건

  1. [해외논문]   The limits of aerial techniques for producing twist in forward 1½ somersault dives   SCI SCIE SSCI SCOPUS

    Yeadon, M.R. (Corresponding author at: School of Sport, Exercise and Health Sciences, Loughborough University, Ashby Road, Loughborough, Leicestershire LE11 3TU, UK.) , Hiley, M.J.
    Human movement science v.58 ,pp. 97 - 107 , 2018 , 0167-9457 ,

    초록

    Abstract An angle-driven computer simulation model of aerial movement was used to determine the maximum amount of twist that can be produced in a forward 1½ somersault dive from a three-metre springboard using various aerial twisting techniques. The segmental inertia parameters of an elite springboard diver were used in the simulations and lower bounds were placed on the durations of arm and hip angle changes based on recorded performances of twisting somersaults. A limiting dive was identified as that producing the largest possible whole number of twists. Simulations of the limiting dives were found using simulated annealing optimisation to produce the required amounts of somersault, tilt and twist after a flight time of 1.5 s. Additional optimisations were then run to seek solutions with the arms less adducted during the twisting phase. It was found that the upper limits ranged from two to five twists with arm abduction ranges lying between 6° and 17°. Similar results were obtained when the inertia parameters of two other springboard divers were used. Highlights The limits of aerial techniques for producing forward 1½ somersault twisting dives. Forward 1½ somersault dive with five twists using asymmetrical arm technique. Forward 1½ somersault dive with five twists using asymmetrical chest technique.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

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  2. [해외논문]   Sensory and motor differences in Autism Spectrum Conditions and developmental coordination disorder in children: A cross-syndrome study   SCI SCIE SSCI SCOPUS

    Hannant, Penny (Centre for Innovative Research Across the Life Course, Coventry University, UK ) , Cassidy, Sarah (School of Psychology, University of Nottingham, UK ) , Van de Weyer, Rosaline (DyspraxiaUK, Barrington, Cambridge, CB22 7SG, UK ) , Mooncey, Sophia (Spire Hospital, UK)
    Human movement science v.58 ,pp. 108 - 118 , 2018 , 0167-9457 ,

    초록

    Abstract Recent research has shown that Developmental coordination disorder (DCD) can present with some similar symptomology as Autism Spectrum Conditions (ASC). This paper therefore explored the similarities and differences in coordination and sensory responsivity between DCD and ASC. 77 children took part: 42 (35 male, 7 female) with ASC (ages 7–21: mean age 12.23 years), 26 (19 male, 7 female) with DCD (ages 7–21; mean age 11.07 years) and 9 (2 male, 7 female) with ASC and DCD (ages 8–15; mean age 12.27). All groups completed a battery of validated parent report measures online that included motor coordination (DCDQ), sensory responsivity (SPC-R) and social communication measures (AQ). Results showed no significant differences in coordination, and some significant differences in sensory responsivity between ASC and DCD (increased visual and auditory responsivity and decreased proprioception). Exploratory analysis showed that these differences showed good validity in identifying the diagnosis of ASC and DCD. These results elucidate the underlying causes of motor coordination difficulties in both conditions. Specifically, ASC coordination difficulties appear linked to visual processing impairments, whilst DCD coordination difficulties appear to be linked to spatial processing. This may aid better diagnosis and intervention for these conditions.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  3. [해외논문]   Effects of motor imagery and action observation on hand grip strength, electromyographic activity and intramuscular oxygenation in the hand gripping gesture: A randomized controlled trial   SCI SCIE SSCI SCOPUS

    Losana-Ferrer, Alejandro (Departamento de Fisioterapia, Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, Spain ) , Manzanas-Ló (Departamento de Fisioterapia, Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, Spain ) , pez, Sergio (Departamento de Fisioterapia, Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, Spain ) , Cuenca-Martí (Departamento de Fisioterapia, Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, Spain ) , nez, Ferran (Departamento de Fisioterapia, Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, Spain) , Paris-Alemany, Alba , La Touche, Roy
    Human movement science v.58 ,pp. 119 - 131 , 2018 , 0167-9457 ,

    초록

    Abstract The aim of this study was to evaluate the effects of motor imagery and action observation combined with a hand grip strength program on the forearm muscles. Sixty subjects were selected and randomized into three groups: motor imagery (n = 20), action observation (n = 20), or a control group (n = 20). Outcome measures included hand grip strength, electromyographical activity and intramuscular oxygenation. The hand grip strength significantly increased in the motor imagery ( p p p = .30). In the electromyographical activity, intra-group significant differences were found in motor imagery ( p = .002) and action observation ( p = .003) groups, although there were no differences between the both groups ( p = 1.00) Intramuscular oxygenation results did not show any statistically significant differences between any of the study groups ( p > .05). Our results suggest that both motor imagery and action observation training, combined with a hand grip strength program, present a significant strength gain and significant change in the strength and electromyographical activity of the forearm muscles, however no change was found in intramuscular oxygenation. Highlights Motor imagery and action observation improved the strength of the hand gripping. There were no differences between motor imagery and action observation groups. No differences were found between groups for intramuscular oxygenation.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  4. [해외논문]   Effect of short-term training on fine motor control in trigeminally innervated versus spinally innervated muscles   SCI SCIE SSCI SCOPUS

    Zhang, Hong (Department of Prosthodontics, Nanjing Stomatologic Hospital, Medical School of Nanjing University, China ) , Kumar, Abhishek (Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Sweden ) , Luo, Xiaoping (Department of Prosthodontics, Nanjing Stomatologic Hospital, Medical School of Nanjing University, China ) , Svensson, Krister (Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Sweden ) , Trulsson, Mats (Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Sweden ) , Svensson, Peter (Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Sweden)
    Human movement science v.58 ,pp. 132 - 139 , 2018 , 0167-9457 ,

    초록

    Abstract We hypothesized that the trigeminally innervated jaw muscles and spinally innervated hand muscles would differ in the force control and muscle activity when similar fine motor training tasks are performed. Sixteen healthy volunteers performed six series (with ten trials each) of an oral fine motor task (OFMT) and a hand fine motor task (HFMT), in random order. The task was to hold-and-break a test material (5 cm spaghetti pasta) placed on the force transducer between either their anterior teeth (OFMT) or the thumb and the index finger (HFMT). The hold and the break forces along with the electromyographic (EMG) activity of the left and right masseter (MAL and MAR), left anterior temporalis (TAL) and digastric (DIG) muscles during OFMT, and first dorsal interosseous (FDI) and abductor pollicis brevis (APB) during HFMT, were recorded. There was no significant difference in the relative change of holding force during the six subsequent series, neither for the OFMT (P = 0.39) nor for the HFMT (P = 0.10). The relative change of EMG activity of MAL (P = 0.01) and MAR (P = 0.02) during the hold phase decreased significantly during the six series of OFMT. Also the relative change of break force (P = 0.001) and the relative change of EMG activity of APB during the hold (P = 0.003) and break phases (P = 0.002) decreased significantly during the six series of HFMT. The results indicate functional differences between the jaw and hand muscles during a similar hold-and-break task, with the most pronounced changes for the spinally innervated hand muscles. Overall, these findings indicate that training-related neuroplasticity cannot be extrapolated directly from the spinal to the trigeminal system and vice versa. Highlights There may be functional differences between the hand and jaw muscles during similar task performance. The effects of fine motor task training may be more pronounced for spinally innervated hand muscles than jaw muscles. Training-evoked neuroplasticity cannot be extrapolated directly from the spinal to the trigeminal system and vice versa.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  5. [해외논문]   Biomechanical assessment of dynamic balance: Specificity of different balance tests   SCI SCIE SSCI SCOPUS

    Ringhof, Steffen (Corresponding author at: BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Engler-Bunte-Ring 15, 76131 Karlsruhe, Germany.) , Stein, Thorsten
    Human movement science v.58 ,pp. 140 - 147 , 2018 , 0167-9457 ,

    초록

    Abstract Dynamic balance is vitally important for most sports and activities of daily living, so the assessment of dynamic stability has become an important issue. In consequence, a large number of balance tests have been developed. However, it is not yet known whether these tests (i) measure the same construct and (ii) can differentiate between athletes with different balance expertise. We therefore studied three common dynamic balance tests: one-leg jump landings, Posturomed perturbations and simulated forward falls. Participants were 24 healthy young females in regular training in either gymnastics ( n = 12) or swimming ( n = 12). In each of the tests, the participants were instructed to recover balance as quickly as possible. Dynamic stability was computed by time to stabilization and margin of stability, deduced from force plates and motion capture respectively. Pearson’s correlations between the dynamic balance tests found no significant associations between the respective dynamic stability measures. Furthermore, independent t-tests indicated that only jump landings could properly distinguish between both groups of athletes. In essence, the different dynamic balance tests applied did not measure the same construct but rather task-specific skills, each of which depends on multifactorial internal and external constraints. Our study therefore contradicts the traditional view of considering balance as a general ability, and reinforces that dynamic balance measures are not interchangeable. This highlights the importance of selecting appropriate balance tests. Highlights We investigated the associations between three dynamicbalance tests. We also examined whether these test can differentiate between gymnasts and swimmers. Analyses revealed that correlations between the dynamic stability measures were low. Gymnasts were only significantly superior in a jump landing task. These results reinforce the task-specificity principle of balance.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  6. [해외논문]   Spatial and temporal analysis center of pressure displacement during adolescence: Clinical implications of developmental changes   SCI SCIE SSCI SCOPUS

    Quatman-Yates, Catherine (Cincinnati Children's Hospital Division of Occupational and Physical Therapy, USA ) , Bonnette, Scott (Cincinnati Children's Hospital Division of Sports Medicine, USA ) , Gupta, Resmi (Cincinnati Children's Hospital Division of Biostatistics and Epidemiology, USA ) , Hugentobler, Jason A. (Cincinnati Children's Hospital Division of Occupational and Physical Therapy, USA ) , Wade, Shari L. (Cincinnati Children's Hospital Division of Physical Medicine and Rehabilitation, USA ) , Glauser, Tracy A. (Cincinnati Children's Hospital Division of Neurology, USA ) , Ittenbach, Richard F. (Cincinnati Children's Hospital Division of Biostatistics and Epidemiology, USA ) , Paterno, Mark V. (Cincinnati Children's Hospital Division of Occupational and Physical Therapy, USA ) , Riley, Michael A. (University of Cincinnati Department of Psychology and Center for Action and Perception, USA)
    Human movement science v.58 ,pp. 148 - 154 , 2018 , 0167-9457 ,

    초록

    Abstract This study aimed to provide insight into the development of postural control abilities in youth. A total of 276 typically developing adolescents (155 males, 121 females) with a mean age of 13.23 years (range of 7.11–18.80) were recruited for participation. Subjects performed two-minute quiet standing trials in bipedal stance on a force plate. Center of pressure (COP) trajectories were quantified using Sample Entropy (SampEn) in the anterior-posterior direction (SampEn-AP), SampEn in the medial–lateral direction (SampEn-ML), and Path Length (PL) measures. Three separate linear regression analyses were conducted to predict the relationship between age and each of the response variables after adjusting for individuals’ physical characteristics. Linear regression models showed an inverse relationship between age and entropy measures after adjusting for body mass index. Results indicated that chronological age was predictive of entropy and path length patterns. Specifically, older adolescents exhibited center of pressure displacement (smaller path length) and less complex, more regular center of pressure displacement patterns (lower SampEn-AP and SampEn-ML values) compared to the younger children. These findings support prior studies suggesting that developmental changes in postural control abilities may continue throughout adolescence and into adulthood. Highlights Chronological age was predictive of temporal order and structure of sway. Older adolescents exhibited less sway and more regular sway patterns. Developmental changes sway may continue throughout adolescence.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  7. [해외논문]   Multi-plane, multi-joint lower extremity support moments during a rapid deceleration task: Implications for knee loading   SCI SCIE SSCI SCOPUS

    Podraza, Jeffery T. (Department of Physical Therapy, D'Youville College, Buffalo, NY, United States ) , White, Scott C. (Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY, United States ) , Ramsey, Dan K. (Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY, United States)
    Human movement science v.58 ,pp. 155 - 164 , 2018 , 0167-9457 ,

    초록

    Abstract The principle of lower limb support, and the contribution of hip, knee and ankle moments to an overall limb support strategy for an impact-like, rapid deceleration movement may help explain individual moment magnitude changes, thereby providing insight into how injury might occur or be avoided. Twenty subjects performed single limb, impact-like, deceleration landings at three different knee flexion angles in the range of 0–25, 25–50 and 50–75°. Kinematic and kinetic measures identified hip, knee and ankle moment contribution to limb support moments (LSMs) in three planes. Repeated measures ANOVA compared LSMs and the contribution of individual joint moments at initial contact (IC) and 50 ms after. There were no significant differences in the overall LSMs at IC in any plane when the deeper knee flexion landings (25–50° and 50–75°) were compared to the 0–25° landing position but there were significant changes in the 50 ms period after IC. There were greater overall extensor LSMs, less resistance to medial opening of the knee and decreased support against internal tibia rotation when landing in greater knee flexion. The role of individual joint moments changed rapidly in the 50 ms period after initial landing; and, the relative contribution of the hip and ankle moments depended on the degree of limb flexion at landing. Analyses of individual joint moments emphasized the critical role that the hip joint moments have in balancing potentially injurious knee moments in all three planes for all three landing conditions. Highlights LSM’s are the combination of knee hip and ankle moments to limb support. Greater extensor LSMs occur with greater knee flexion. Less resistance to valgus stress occurs with greater knee flexion. Less support against tibial internal rotation occurs with greater knee flexion. Hip moments of force play a critical role in balancing multiplanar knee moments.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  8. [해외논문]   How does lower limb dominance influence postural control movements during single leg stance?   SCI SCIE SSCI SCOPUS

    Promsri, Arunee (Department of Sport Science, University of Innsbruck, Fürstenweg 185 A-6020 Innsbruck, Austria ) , Haid, Thomas (Department of Sport Science, University of Innsbruck, Fürstenweg 185 A-6020 Innsbruck, Austria ) , Federolf, Peter (Department of Sport Science, University of Innsbruck, Fürstenweg 185 A-6020 Innsbruck, Austria)
    Human movement science v.58 ,pp. 165 - 174 , 2018 , 0167-9457 ,

    초록

    Abstract The main purposes of the current study were to examine bilateral asymmetry in postural control during single-leg standing between the dominant and non-dominant legs using a novel analysis approach based on principal component analysis (PCA). It was hypothesized that the asymmetry might manifest as differences in the coordinative structure (control strategies), or as differences in the frequency or regularity of corrective interventions of the motor control system. The static and dynamic leg dominance of 26 active young adults (14 males and 12 females) was determined from their preferred leg for dynamic and for static tasks. Then postural movements during one-leg standing were recorded with a standard marker-based motion capture system and analyzed by a PCA. The coordinative structure of postural movements was quantified using the relative variance of the principal movement components (PMs). Then the PMs were differentiated to obtain postural accelerations, from which two variables characterizing the activity (frequency and regularity) of the postural control system were derived. There were no differences in the coordinative structure, neither for dynamic nor for static leg preference. However, both variables characterizing asymmetries in the postural accelerations showed significant differences in specific PMs. Dynamic leg dominance yielded more and larger effects than static leg dominance. In the opinion of the authors, the PM-specificity of limb dominance agrees with principles of movement control derived from optimal feedback control theory. In summary, the current study suggests that leg dominance should be considered in clinical testing; different effects in different movement components should be expected; and one-leg standing should be seen as a dynamic, rather than as a static task.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  9. [해외논문]   Cognitive-motor dual-task interference modulates mediolateral dynamic stability during gait in post-stroke individuals   SCI SCIE SSCI SCOPUS

    Tisserand, R. (Univ. Lyon, Université) , Armand, S. (Claude Bernard Lyon 1, IFSTTAR, UMR_T9406, LBMC, 69622 Lyon, France ) , Allali, G. (Willy Taillard Laboratory of Kinesiology, Geneva University Hospitals and University of Geneva, Geneva, Switzerland ) , Schnider, A. (Department of Clinical Neurosciences, Division of Neurology, Geneva University Hospitals, University of Geneva, Geneva, Switzerland ) , Baillieul, S. (Division of Neurorehabilitation, Geneva University Hospitals and University of Geneva, Switzerland )
    Human movement science v.58 ,pp. 175 - 184 , 2018 , 0167-9457 ,

    초록

    Abstract Gait asymmetry and dynamic balance impairments observed in post-stroke individuals increase their risk of fall. Moreover, walking while performing a cognitive task ( i.e. dual-task) disturbs the control of balance in post-stroke individuals. Here we investigated the mediolateral dynamic stability in twenty-two community-dwelling participants (12 post-strokes and 10 healthy controls) while walking in single-task (normal gait) and four different dual-tasks (cognitive-motor interference). Positions of the extrapolated center of mass and mediolateral widths of both margin of stability and base of support were extracted from 35 marker trajectories. Post-stroke participants presented larger margin of stability and base of support than controls during single-task (both p Highlights Stroke survivors have larger mediolateral stability than controls in single-task. Stability of stroke survivors mostly rely on the non-paretic limb in single-task. Stroke survivors have larger mediolateral stability than controls in dual-task. Cognitive performance of stroke survivors is reduced during dual-task. Stroke survivors’ cognitive deficits may increase fall risk during gait.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  10. [해외논문]   Motor output complexity in Parkinson's disease during quiet standing and walking: Analysis of short-term correlations using the entropic half-life   SCI SCIE SSCI SCOPUS

    Pasluosta, C. (Digital Sports Group, Pattern Recognition Laboratory, Department of Computer Science, Friedrich Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany ) , Hannink, J. (Digital Sports Group, Pattern Recognition Laboratory, Department of Computer Science, Friedrich Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany ) , Gaßner, H. (Department of Molecular Neurology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany ) , Von Tscharner, V. (Human Performance Laboratory, University of Calgary, Calgary, Canada ) , Winkler, J. (Department of Molecular Neurology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany ) , Klucken, J. (Department of Molecular Neurology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany ) , Eskofier, B.M. (Digital Sports Group, Pattern Recognition Laboratory, Department of Computer Science, Friedrich Alexander University Erlangen-Nürnberg (FAU), Erlangen,)
    Human movement science v.58 ,pp. 185 - 194 , 2018 , 0167-9457 ,

    초록

    Abstract Parkinson’s disease (PD) is associated with alterations in motor outputs such as center of pressure (CoP) adjustments during quiet standing and foot kinematics during walking. Previous research suggests that the complexity of motor outputs reflects the number of control processes stabilizing a specific movement, providing a measure that is linked to the neurological control of the movement. The Entropic Half Life (EnHL) represents a new method for assessing motor output complexity. We hypothesized that there will be a lack of neuromuscular control pathways for PD patients, resulting in a decrease in motor output complexity. We computed the EnHL of CoP adjustments during quiet standing and foot kinematics during walking of 70 PD patients and 33 age-matched controls. Patients with PD showed longer EnHL values compared to controls, suggesting a tighter motor control. Excluding vision led to a decrease of EnHL of CoP in both groups. EnHL was correlated with spatio-temporal gait parameters. We compared EnHL with the pull test and the timed up-and-go test. No significant differences were present in the pull test, yet motor output complexity was correlated with the timed up-and-go test. The results suggest a reduced complexity in motor outputs of PD patients affecting distinct motor functions.

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