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Human Movement Science

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https://www.readbyqxmd.com/read/27923175/errors-in-the-ankle-plantarflexor-force-production-are-related-to-the-gait-deficits-of-individuals-with-multiple-sclerosis
#1
Brenda L Davies, Rashelle M Hoffman, Kathleen Healey, Rana Zabad, Max J Kurz
BACKGROUND: Individuals with multiple sclerosis (MS) often have limited mobility that is thought to be due to the neuromuscular impairments of the ankle. Greater isometric motor control of the ankle has been associated with better standing postural balance but its relationship to mobility is less understood. The objectives of this investigation were to quantify the motor control of the ankle plantarflexors of individuals with MS during a dynamic isometric motor task, and explore the relationship between the ankle force control and gait alterations...
December 3, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27918960/effects-of-knee-action-phase-and-fatigue-on-rectus-femoris-and-biceps-femoris-co-activation-during-the-eggbeater-kick
#2
Nuno Oliveira, Ross H Sanders
The purpose of this study was to investigate the effect of knee extension/flexion and fatigue on muscle co-activation of the Rectus Femoris (RF) and Biceps Femoris (BF) during the eggbeater kick. Ten national level male water polo players executed eggbeater kicks at maximum effort for the duration of the test. The eggbeater kick cycle was divided into four phases (FLX1, FLX2, EXT1, EXT2). Surface electromyographs were recorded from RF and BF. EMG activity normalized to the maximum voluntary isometric contraction, muscle co-activation (CCI) and angular velocity (AV) of the right and left knee were calculated...
December 2, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27915152/goal-equivalent-manifold-analysis-of-task-performance-in-non-specific-lbp-and-healthy-subjects-during-repetitive-trunk-movement-effect-of-load-velocity-symmetry
#3
Mahshid Chehrehrazi, Mohammad Ali Sanjari, Hamid Reza Mokhtarinia, Ali Ashraf Jamshidi, Nader Maroufi, Mohamad Parnianpour
Motor abundance allows reliability of motor performance despite its variability. The nature of this variability provides important information on the flexibility of control strategies. This feature of control may be affected by low back pain (LPB) and trunk flexion/extension conditions. Goal equivalent manifold (GEM) analysis was used to quantify the ability to exploit motor abundance during repeated trunk flexion/extension in healthy individuals and people with chronic non-specific LBP (CNSLBP). Kinematic data were collected from 22 healthy volunteers and 22 CNSLBP patients during metronomically timed, repeated trunk flexion/extension in three conditions of symmetry, velocity, and loading; each at two levels...
December 1, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27876401/developmental-coordination-disorder-and-its-cause-the-road-less-travelled
#4
Michael G Wade, Makinzee Kazeck
We critically review the research literature that seeks to focus on the possible cause of children diagnosed with developmental coordination disorder (DCD). In so doing we contrast the traditional information processing (IP) approach as a model to explain the causal factors that account for the motor deficits present in children with DCD, with a dynamical systems (DS) account which argues that coordination deficits in children with DCD is less to do with problems of poor internal models (a cornerstone of IP theory) and more with a degrading of perception-action coupling...
November 19, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27871772/identifying-play-characteristics-of-pre-school-children-with-developmental-coordination-disorder-via-parental-questionnaires
#5
Sara Rosenblum, Pola Waissman, Gary W Diamond
: Motor coordination deficits that characterize children with Developmental Coordination Disorder (DCD) affect their quality of participation. The aim of the current study was to identify play characteristics of young children with DCD, compared to those of children with typical development in three dimensions: activity and participation, environmental factors and children's impairments. METHOD: Sixty-four children, aged four to six years, participated. Thirty were diagnosed as having DCD; the remaining 34 children were age, gender and socioeconomic level matched controls with typical development...
November 18, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27870980/a-systematic-review-on-perceptual-motor-calibration-to-changes-in-action-capabilities
#6
Steven van Andel, Michael H Cole, Gert-Jan Pepping
Perceptual-motor calibration has been described as a mapping between perception and action, which is relevant to distinguish possible from impossible opportunities for action. To avoid movement errors, it is relevant to rapidly calibrate to immediate changes in capabilities and therefore this study sought to explain in what conditions calibration is most efficient. A systematic search of seven databases was conducted to identify literature concerning changes in calibration in response to changes in action capabilities...
November 18, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27846398/cortical-activation-during-balancing-on-a-balance-board
#7
Fabian Herold, Katja Orlowski, Sabrina Börmel, Notger G Müller
BACKGROUND: Keeping one's balance is a complex motor task which requires the integration and processing of different sensory information. For this, higher cortical processes are essential. However, in the past research dedicated to the brain's involvement in balance control has predominantly used virtual reality paradigms whilst little is known about cortical activation during the challenging balancing on unstable surfaces (e.g. balance board). Hence, the main goal of this study was the simultaneous evaluation of cortical activation patterns and sway parameters during balancing on a balance board...
November 12, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27842230/the-relationship-between-executive-function-and-fine-motor-control-in-young-and-older-adults
#8
Emily J Corti, Andrew R Johnson, Hayley Riddle, Natalie Gasson, Robert Kane, Andrea M Loftus
The present study examined the relationship between executive function (EF) and fine motor control in young and older healthy adults. Participants completed 3 measures of executive function; a spatial working memory (SWM) task, the Stockings of Cambridge task (planning), and the Intra-Dimensional Extra-Dimensional Set-Shift task (set-shifting). Fine motor control was assessed using 3 subtests of the Purdue Pegboard (unimanual, bimanual, sequencing). For the younger adults, there were no significant correlations between measures of EF and fine motor control...
November 11, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27838506/wavelet-frequency-analysis-for-the-detection-of-discontinuities-in-switched-system-models-of-human-balance
#9
Salam Nema, Piotr Kowalczyk, Ian Loram
This paper is concerned with detecting the presence of switching behavior in experimentally obtained posturographic data sets by means of a novel algorithm that is based on a combination of wavelet analysis and Hilbert transform. As a test-bed for the algorithm, we first use a switched model of human balance control during quiet standing with known switching behavior in four distinct configurations. We obtain a time-frequency representation of a signal generated by our model system. We are then able to detect manifestations of discontinuities (switchings) in the signal as spiking behavior...
November 10, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27832925/ecological-validity-of-the-german-bruininks-oseretsky-test-of-motor-proficiency-2nd-edition
#10
Sabine Vinçon, Dido Green, Rainer Blank, Ekkehart Jenetzky
The diagnosis of Developmental Coordination Disorder (DCD) is based on poor motor coordination in the absence of other neurological disorders. In order to identify the presence of movement difficulties, a standardised motor assessment is recommended to determine the extent of movement problems which may contribute to deficits in daily task performance. A German version of the Bruininks-Oseretsky Test of Motor Proficiency, Second Edition (German BOT-2) was recently published. This study aimed to determine the ecological validity of the German BOT-2 by considering the relationship between assessment of fundamental motor skills with the BOT-2 and performance of everyday motor activities as evaluated by parents...
November 7, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27821311/breastfeeding-and-motor-development-a-longitudinal-cohort-study
#11
Tegan Grace, Wendy Oddy, Max Bulsara, Beth Hands
BACKGROUND: While there is a large body of work supporting the importance of early feeding practices on cognitive, immunity, behavioural and mental outcomes, few longitudinal studies have focused on motor development. The relationship between duration of breast feeding and motor development outcomes at 10, 14, and 17years were examined. METHODS: Data were obtained from the Western Australian Pregnancy (Raine) Study. There were 2868 live births recorded and children were examined for motor proficiency at 10 (M=10...
November 4, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27821310/differences-in-motor-variability-among-individuals-performing-a-standardized-short-cycle-manual-task
#12
Jonas Sandlund, Divya Srinivasan, Marina Heiden, Svend Erik Mathiassen
Motor variability (MV) has been suggested to be a determinant of the risk for developing musculoskeletal disorders in repetitive work. In this study we examined whether individuals consistently differed in the extent of motor variability when performing a standardized short-cycle manual task. On three separate days, arm kinematics was recorded in 14 healthy subjects performing a pipetting task, transferring liquid from a pick-up tube to eight target tubes with a cycle time of 2.8s. Cycle-to-cycle standard deviations (SD) of a large selection of shoulder and elbow kinematic variables, were processed using principal component analysis (PCA)...
November 4, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27814563/age-related-differences-in-the-timing-aspect-of-lumbopelvic-rhythm-during-trunk-motion-in-the-sagittal-plane
#13
Milad Vazirian, Iman Shojaei, Babak Bazrgari
Forward bending and backward return of the human trunk in the sagittal plane are associated with a specific lumbopelvic rhythm, which consists of magnitude and timing aspects. In this study, the age-related differences in the timing aspect of lumbopelvic rhythm were investigated using the continuous relative phase method. Specifically, the mean absolute relative phase (MARP) between the thoracic and pelvic motions as well as variation in MARP under repetitive motions, denoted by deviation phase (DP), were characterized in sixty participants between 20 and 70years old...
November 1, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27764714/propulsion-strategy-in-the-gait-of-primary-school-children-the-effect-of-age-and-speed
#14
Jillian Lye, Stephanie Parkinson, Nicola Diamond, Jenny Downs, Susan Morris
The strategy used to generate power for forward propulsion in walking and running has recently been highlighted as a marker of gait maturation and elastic energy recycling. This study investigated ankle and hip power generation as a propulsion strategy (PS) during the late stance/early swing phases of walking and running in typically developing (TD) children (15: six to nine years; 17: nine to 13years) using three-dimensional gait analysis. Peak ankle power generation at push-off (peakA2), peak hip power generation in early swing (peakH3) and propulsion strategy (PS) [peakA2/(peakA2+peakH3)] were calculated to provide the relative contribution of ankle power to total propulsion...
October 17, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27751561/assessing-motor-proficiency-in-young-adults-the-bruininks-oseretsky-test-2-short-form-and-the-mccarron-assessment-of-neuromuscular-development
#15
F McIntyre, H Parker, A Thornton, M Licari, J Piek, D Rigoli, B Hands
Currently, only two motor tests have norms extending into young adulthood - the McCarron Assessment of Neuromuscular Development (MAND, McCarron 1997) and the Bruininks Oseretsky Test of Motor Proficiency-2 (BOT-2, Bruininks & Bruininks, 2005). Research into the motor difficulties in early adulthood and health outcomes has been impeded because there is no agreed gold standard motor test for this group. The purposes of this study were to compare the discrimination accuracy, classification agreement, and predictive values, and gender distribution and prevalence of each test in identifying motor impairment (MI) in relation to DSM-V diagnostic criteria for DCD...
October 14, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27697306/the-relationship-between-motor-proficiency-and-mental-health-outcomes-in-young-adults-a-test-of-the-environmental-stress-hypothesis
#16
D Rigoli, R T Kane, V Mancini, A Thornton, M Licari, B Hands, F McIntyre, J Piek
Growing evidence has highlighted the importance of motor proficiency in relation to psychosocial outcomes including self-perceived competence in various domains, perceived social support, and emotional areas such as anxiety and depression. The Environmental Stress Hypothesis-elaborated (Cairney, Rigoli, & Piek, 2013) is a proposed theoretical framework for understanding these relationships and recent studies have begun examining parts of this model using child and adolescent populations. However, the extent to which the relationships between these areas exist, persist or change during early adulthood is currently unclear...
September 30, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27658264/children-with-developmental-coordination-disorder-dcd-can-adapt-to-perceptible-and-subliminal-rhythm-changes-but-are-more-variable
#17
Renuka Roche, Priya Viswanathan, Jane E Clark, Jill Whitall
Children with DCD demonstrate impairments in bimanual finger tapping during self-paced tapping and tapping in synchrony to different frequencies. In this study, we investigated the ability of children with DCD to adapt motorically to perceptible or subliminal changes of the auditory stimuli without a change in frequency, and compared their performance to typically developing controls (TDC). Nineteen children with DCD between ages 6-11years (mean age±SD=114±21months) and 17 TDC (mean age±SD=113±21months) participated in this study...
September 19, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27639219/three-dimensional-kinematics-of-upper-limb-anatomical-movements-in-asymptomatic-adults-dominant-vs-non-dominant
#18
Ayman Assi, Ziad Bakouny, Mohammad Karam, Abir Massaad, Wafa Skalli, Ismat Ghanem
The effect of dominance on upper limb (UL) kinematics has only been studied on scapular movements. Moreover, when an anatomical UL movement is performed in a specific plane, secondary movements in the remaining planes involuntarily occur. These secondary movements have not been previously evaluated. The aim of this study was to compare the kinematics of primary and secondary angles of dominant and non-dominant UL during anatomical movements in asymptomatic adults. 25 asymptomatic adults performed 6 anatomical movements bilaterally: shoulder flexion-extension, abduction-adduction, horizontal abduction-adduction, internal-external rotation, elbow flexion-extension and wrist pronation-supination...
September 14, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27620643/configurations-of-actual-and-perceived-motor-competence-among-children-associations-with-motivation-for-sports-and-global-self-worth
#19
Farid Bardid, An De Meester, Isabel Tallir, Greet Cardon, Matthieu Lenoir, Leen Haerens
The present study used a person-centred approach to examine whether different profiles based on actual and perceived motor competence exist in elementary school children. Multilevel regression analyses were conducted to explore how children with different motor competence-based profiles might differ in their autonomous motivation for sports and global self-worth. Validated questionnaires were administered to 161 children (40% boys; age=8.82±0.66years) to assess their perceived motor competence, global self-worth, and motivation for sports...
September 14, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27788372/higher-order-balance-control-distinct-effects-between-cognitive-task-and-manual-steadiness-constraint-on-automatic-postural-responses
#20
Daniel Boari Coelho, Catarina Bourlinova, Luis Augusto Teixeira
In the present experiment, we aimed to evaluate the interactive effect of performing a cognitive task simultaneously with a manual task requiring either high or low steadiness on APRs. Young volunteers performed the task of recovering upright balance following a mechanical perturbation provoked by unanticipatedly releasing a load pulling the participant's body backwards. The postural task was performed while holding a cylinder steadily on a tray. One group performed that task under high (cylinder' round side down) and another one under low (cylinder' flat side down) manual steadiness constraint...
December 2016: Human Movement Science
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