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Journal of Motor Behavior

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https://www.readbyqxmd.com/read/28524811/impact-of-tactile-sensation-on-dexterity-a-cross-sectional-study-of-patients-with-impaired-hand-function-after-stroke
#1
Elena L Pavlova, Jörgen Borg
The authors sought to explore the impact of tactile sensation on manual dexterity and the validity of the strength-dexterity test in subjects with chronic impairments after stroke in a cross-sectional study of 24 patients with impaired hand function after stroke. Dexterity was assessed by the strength-dexterity test, Box and Blocks, and Nine-Hole Peg Test, and the ABILHAND questionnaire. Sensation was measured by pinprick, cotton-wool, graphesthesia, and 2-point discrimination tests. Sensation in the paretic hand had strong association with paretic hand performance in the strength-dexterity test and Nine-Hole Peg Test and explained 13% of the variance...
May 19, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28521636/ipsilesional-arm-aiming-movements-after-stroke-influence-of-the-degree-of-contralesional-impairment
#2
Flavia Priscila de Paiva Silva, Sandra Maria Sbeghen Ferreira Freitas, Renata Morales Banjai, Sandra Regina Alouche
The authors examined the effects of the degree of impairment of the contralesional upper limb and the side of the hemispheric damage on ipsilesional upper limb performance in chronic stroke individuals. Right- and left-side stroke resulting in mild-to-severe impairment and healthy participants took part in simple and choice reaction time tasks involving aiming movements. The stroke individuals performed the aiming movements with the ipsilesional upper limb using a digitizing tablet to ipsi- or contralateral targets presented in a monitor...
May 19, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28521606/can-video-self-modeling-improve-affected-limb-reach-and-grasp-ability-in-stroke-patients
#3
Kylie Ann Steel, Kurt Mudie, Remi Sandoval, David Anderson, Sera Dogramaci, Mohammad Rehmanjan, Ingvars Birznieks
The authors examined whether feedforward video self-modeling (FF VSM) would improve control over the affected limb, movement self-confidence, movement self-consciousness, and well-being in 18 stroke survivors. Participants completed a cup transport task and 2 questionnaires related to psychological processes pre- and postintervention. Pretest video footage of the unaffected limb performing the task was edited to create a best-of or mirror-reversed training DVD, creating the illusion that patients were performing proficiently with the affected limb...
May 19, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28481692/the-role-of-consistent-context-in-rapid-movement-planning-suboptimal-endpoint-adjustment-to-changing-rewards
#4
Heather F Neyedli, Kevin A LeBlanc
The authors' purpose was to determine if participants adjusted their endpoint during a rapid aiming task in the context of changing rewards and whether participants needed consistent feedback to do so. Participants aimed to a target that was overlapped by a penalty region. Participants gained points for hitting the target but lost points for hitting the penalty region. The reward value associated with target contact either changed trial to trial, reducing consistent feedback (variable condition) or changed between blocks of trials (blocked condition) with the repetition of reward value within a block increasing the consistency of feedback...
May 8, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28350286/head-and-trunk-control-while-walking-in-older-adults-with-diabetes-effects-of-balance-confidence
#5
Patricia Hewston, Nandini Deshpande
Investigations of gait in older adults with diabetes mellitus (DM) have been primarily focused on lower limb biomechanical parameters. Yet, the upper body accounts for two thirds of the body's mass, and head and trunk control are critical for balance. The authors examined head and trunk control during self-selected comfortable, fast, and dual-task walking and the relationship between balance confidence and potential head-trunk stiffening strategies in older adults with DM without diagnosed diabetic peripheral neuropathy (DPN)...
March 28, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28350243/fitts-theorem-and-movement-time-dissociation-for-amplitude-and-width-manipulations-replying-to-hoffmann
#6
Matthew Heath, Luc Tremblay, Digby Elliott
The commentary by Errol Hoffmann asserts that previous work by our group provides the spurious conclusion that amplitude and width manipulations to a movement environment elicit dissociable relations between movement time (MT) and P. M. Fitts' (1954) index of difficulty (ID). Hoffmann concludes that any such dissociation is the result of actions evoked entirely as ballistic. In this reply, we demonstrate that Hoffmann's commentary is a clear misrepresentation of the study goals and conclusions stated by our group...
March 28, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28350240/the-effects-of-task-type-on-time-to-task-failure-during-fatigue-a-modified-s%C3%A3-rensen-test
#7
David W Russ, Andrew J Ross, Brian C Clark, James S Thomas
Understanding mechanisms of fatigue of the trunk extensors is important because fatigue is a major factor in predicting incidence of low back pain, but few studies have examined trunk extensor fatigue muscles using differing load types and measured the amplitude and frequency domain of the electromyographic signal to explain these differences. Sixteen healthy participants performed position- and force-matching fatigue tasks in a modified Sørensen test position. Time to task failure was significantly longer during the position-matching task compared to force-matching task (58...
March 28, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28350234/inclined-weight-loaded-walking-at-different-speeds-pelvis-shoulder-coordination-trunk-movements-and-cost-of-transport
#8
Rodrigo Gomes da Rosa, Natalia Andrea Gomeñuka, Henrique Bianchi de Oliveira, Leonardo Alexandre Peyré-Tartaruga
Although studied at level surface, the trunk kinematics and pelvis-shoulder coordination of incline walking are unknown. The aim of this study was to evaluate the speed effects on pelvis-shoulder coordination and trunk movement and the cost of transport (C) during unloaded and loaded (25% of body mass) 15% incline walking. We collected 3-dimensional kinematic and oxygen consumption data from 10 physically active young men. The movements were analyzed in the sagittal plane (inclination and range of trunk motion) and the transverse plane (range of shoulder and pelvic girdle motion and phase difference)...
March 28, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28350231/object-tool-actor-interaction-object-information-drives-intended-action
#9
Dave A Gonzalez, Sara M Scharoun, M E Cinelli, P J Bryden, J L Lyons, Eric A Roy
Tool use is typically explored via actor-tool interactions. However, the target-object (that which is being acted on) may influence perceived action possibilities and thereby guide action. Three different tool-target-object pairings were tested (Experiment 1). The hammering action demonstrated the greatest sensitivity and therefore subsequently used to further investigate target-object pairings. The hammer was removed as an option and instructions were provided using pictorial (Experiment 2), written (Experiment 3), and both pictorial and written formats (Experiment 4)...
March 28, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28350227/the-impact-of-segmental-trunk-support-on-posture-and-reaching-while-sitting-in-healthy-adults
#10
Victor Santamaria, Jaya Rachwani, Wayne Manselle, Sandra L Saavedra, Marjorie Woollacott
The authors investigated postural and arm control in seated reaches while providing trunk support at midribs and pelvic levels in adults. Kinematics and electromyography of the arm and ipsiliateral and contralateral paraspinal muscles were examined before and during reaching. Kinematics remained constant across conditions, but changes were observed in neuromuscular control. With midribs support, the ipsilateral cervical muscle showed either increased anticipatory activity or earlier compensatory muscle responses, suggesting its major role in head stabilization...
March 28, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28287933/analysis-of-pelvis-thorax-coordination-patterns-of-professional-and-amateur-golfers-during-golf-swing
#11
Taeyong Sim, Hakje Yoo, Ahnryul Choi, Ki Young Lee, Mun-Taek Choi, Soeun Lee, Joung Hwan Mun
The aim of this research was to quantify the coordination pattern between thorax and pelvis during a golf swing. The coordination patterns were calculated using vector coding technique, which had been applied to quantify the coordination changes in coupling angle (γ) between two different segments. For this, fifteen professional and fifteen amateur golfers who had no significant history of musculoskeletal injuries. There was no significant difference in coordination patterns between the two groups for rotation motion during backswing (p = 0...
March 13, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28287928/-eppur-si-move-the-association-between-electrophysiological-and-psychophysical-signatures-of-perceived-movement-illusions
#12
Michela Balconi, Davide Crivelli, Marco Bove
Vibration applied to muscle tendons induces an illusory perception of movement by activating spindle receptors and Ia afferent fibers. While neural structures supporting such illusions are quite defined, functional and psychophysical correlates of their perception have not been deeply investigated. The authors aimed at exploring subjective perception of illusory movements thanks to a repeated-stimulation multimodal approach. The integrated analysis of electroencephalography, source data (standardized low-resolution brain electromagnetic tomography-sLORETA), and psychophysical evaluation pointed at the activation of a frontoparietal sensorimotor network, with prefrontal-medial regions mainly involved in supporting the awareness for illusory movements...
March 13, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28328304/influence-of-additional-ankle-weights-on-kinematic-variables-of-late-preterm-infants-aged-3-4-months
#13
Jadiane Dionisio, Gabriela Lopes Dos Santos, Eloisa Tudella
The authors analyzed and compared the effect of additional weight on the spatiotemporal parameters of the kicking movement of late preterm and full-term infants. The experiment was divided into 4 conditions: training, baseline, weight, and postweight. In the W condition, a weight of one third the lower limb mass was added to the infant's ankle. During the baseline and postweight conditions, the ankle weight was removed. Late preterm infants do not differ from full-term infants in relation to spatiotemporal variables at 3 and 4 months...
May 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27935470/alternating-adaptation-of-eye-and-hand-movements-to-opposite-directed-double-steps
#14
Gerd Schmitz, Valentina Grigorova
Eye and hand movements can adapt to a variety of sensorimotor discordances. Studies on adaptation of movement directions suggest that the oculomotor and the hand motor system access the same adaptive mechanism related to the polarity of a discordance, because concurrent adaptations to opposite directed discordances strongly interfere. The authors scrutinized whether participants adapt their hand and eye movements to opposite directions (clockwise/counterclockwise) when both motor systems are alternatingly exposed to opposite directed double steps, and whether such adaptation is influenced by the allocation of effector to adaptation direction...
May 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27740896/association-between-body-mass-index-and-motor-competence-in-santal-children-of-purulia-district-india
#15
Sutanu Dutta Chowdhury, Brian H Wrotniak, Tusharkanti Ghosh
The purpose of this study was to evaluate the relationship between body mass index and motor competence in Santal children 5-12 years old. A total of 816 Santal children were studied. Children's adiposity status was assessed by body mass index (BMI) for age z-score based on World Health Organization reference data. Motor competence was measured using the Bruininks-Oseretsky Test of Motor Competence (BOT-2). There was no significant difference in mean BMI z-score between Santal boys (0.13 ± 0.07) and girls (-0...
May 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27732431/remote-limb-ischemic-conditioning-at-two-cuff-inflation-pressures-yields-learning-enhancements-in-healthy-adults
#16
Kendra M Cherry-Allen, Jeff M Gidday, Jin-Moo Lee, Tamara Hershey, Catherine E Lang
The authors tested whether 2 doses of remote limb ischemic conditioning (RLIC), induced via blood pressure cuff inflation, enhanced motor and cognitive learning to an equal extent, and explored a panel of blood biomarkers of RLIC. Thirty-two young adults were randomized to 3 groups and underwent a 7-day protocol of RLIC/sham followed by motor and cognitive training, with follow-up. Both RLIC groups had greater motor learning and a trend toward greater cognitive learning compared with the sham group. RLIC at the lower inflation pressure was as effective as RLIC with the higher inflation pressure...
May 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27723429/stepping-responses-in-young-and-older-adults-following-a-perturbation-to-the-support-surface-during-gait
#17
Emily I McIntosh, John L Zettel, Lori Ann Vallis
The objective of this work was to investigate the influence perturbation direction has on postural responses during overground gait, and whether these responses are age related. Differences in stepping patterns following perturbations of the support surface were examined in the frontal and sagittal planes during forward walking. Eleven young and 10 older adults completed Mini BESTest, hip strength tests, and 45 perturbed walking trials, triggered on heel contact. Lateral perturbations were more challenging to postural stability for both groups...
May 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27644454/effect-of-transcranial-direct-current-stimulation-combined-with-virtual-reality-training-on-balance-in-children-with-cerebral-palsy-a-randomized-controlled-double-blind-clinical-trial
#18
Roberta Delasta Lazzari, Fabiano Politti, Stefany Ferreira Belina, Luanda André Collange Grecco, Cibele Almeida Santos, Arislander Jonathan Lopes Dumont, Jamile Benite Palma Lopes, Veronica Cimolin, Manuela Galli, Cláudia Santos Oliveira
The authors' aim was to investigate the effects of continuous transcranial direct current stimulation (tDCS) combined with virtual reality training on static and functional balance in children with cerebral palsy (CP). Twenty children with CP (6 girls and 14 boys; M age = 7 years 6 months ± 2 years) were randomly allocated to two groups. The experimental group received active tDCS and the control group received sham stimulation during the 10 sessions of virtual reality mobility training protocols. The children were evaluated on 3 occasions (preintervention, postintervention, and 1-month follow-up)...
May 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27593342/motor-improvement-using-motion-sensing-game-devices-for-cerebral-palsy-rehabilitation
#19
Fabiana Rita Camara Machado, Priscilla Pereira Antunes, Jandara De Moura Souza, Antônio Cardoso Dos Santos, Daniela Centenaro Levandowski, Alcyr Alves De Oliveira
The authors aimed to investigate the effects of an intervention based on interactive game set with the movement sensor Kinect on children with cerebral palsy (CP). Twenty-eight participants were recruited. Their age was between 3 and 12 years old, and rated as level I, II, or III on the Gross Motor Function Classification System. They played two games from the Xbox 360 Kinect system and were evaluated using the Gross Motor Function Measure (GMFM) after a period of 8 weeks. The intervention led to significant motor function improvement as increase of the global scores on the GMFM (p < ...
May 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27592838/reductive-and-emergent-views-on-motor-learning-in-rehabilitation-practice
#20
Ludger van Dijk, Corry van der Sluis, Raoul M Bongers
To allow different views on motor learning to inform rehabilitation research, the authors aimed to explicate a frequently missed yet fundamental difference in starting point of such views. By considering how rehabilitation in practice answers the question of what parts an activity consists of, reductive and emergent approaches to motor learning are identified and traced throughout rehabilitation practice. The authors show that when a task is cut up along reductive dimensions while also apparently relying on emergent components, this unequally favors the reductive approach and acts to limit the views on motor learning available...
May 2017: Journal of Motor Behavior
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