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https://www.readbyqxmd.com/read/28929312/the-effect-of-hand-position-on-perceived-finger-orientation-in-left-and-right-handers
#1
Lindsey E Fraser, Laurence R Harris
In the absence of visual feedback, the perceived orientation of the fingers is systematically biased. In right-handers these biases are asymmetrical between the left and right hands in the horizontal plane and may reflect common functional postures for the two hands. Here we compared finger orientation perception in right- and left-handed participants for both hands, across various hand positions in the horizontal plane. Participants rotated a white line on a screen optically superimposed over their hand to indicate the perceived position of the finger that was rotated to one of seven orientations with the hand either aligned with the body midline, aligned with the shoulder, or displaced by twice the shoulder-to-midline distance from the midline...
September 19, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28914720/effects-of-corrective-exercise-for-thoracic-hyperkyphosis-on-posture-balance-and-well-being-in-older-women-a-double-blind-group-matched-design
#2
Hyun-Jeong Jang, Lynne C Hughes, Duck-Won Oh, Suhn-Yeop Kim
BACKGROUND AND PURPOSE: The purpose of this study was to identify the effects of a corrective exercise for thoracic hyperkyphosis on posture, balance, and well-being in Korean community-dwelling older women. METHODS: Fifty women 65 years of age and older, recruited from 2 senior centers, participated in this study. Participants were assigned to either the experimental group (EG) or the control group (CG) on the basis of convenience of location, and 22 in each were analyzed...
September 13, 2017: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/28912700/action-direction-of-muscle-synergies-in-voluntary-multi-directional-postural-control
#3
Akari Kubo, Shota Hagio, Benio Kibushi, Toshio Moritani, Motoki Kouzaki
A muscle synergy is a coordinative structure of muscles that has been proposed as a strategy to reduce the number of variables that the central nervous system (CNS) has to address in motor tasks. In this article, the mechanical contribution of muscle synergies and coordinative structures of muscles in voluntary multi-directional postural control were investigated. The task for healthy, young subjects was to shift and align their center of pressure (COP) to targets dispersed in 12 different directions in the horizontal plane by leaning their bodies for 10 s...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28886864/analysis-of-the-cranio-cervical-curvatures-in-subjects-with-migraine-with-and-without-neck-pain
#4
Gabriela Natália Ferracini, Thais Cristina Chaves, Fabíola Dach, Débora Bevilaqua-Grossi, César Fernández-de-Las-Peñas, José Geraldo Speciali
OBJECTIVE: To investigate the differences in head and cervical spine alignment between subjects with migraine and healthy people. DESIGN: A cross-sectional, observational study. PARTICIPANTS: Fifty subjects with migraine and 50 matched healthy controls. MAIN OUTCOMES MEASURES: The presence of neck pain and neck pain-related disability was assessed. Four angles (high cervical angle, low cervical angle, atlas plane angle and cervical lordosis Cobb angle) as well as four distances (anterior translation distance, C0 to C1 distance, C2 to C7 posterior translation and hyoid triangle) were calculated using digitalised radiographs and analysed using K-Pacs(®) software...
March 24, 2017: Physiotherapy
https://www.readbyqxmd.com/read/28880595/lower-leg-and-foot-contributions-to-turnout-in-university-level-female-ballet-dancersa-preliminary-investigation
#5
Sarah L Carter, Alan R Bryant, Luke S Hopper
BACKGROUND: Turnout in ballet is produced through summation of the joint structure characteristics and ranges of motion at the hip, knee, ankle, and foot. Contributions of the hip joint to functional turnout in dancers have received extensive examination, whereas little is known about contributions from the knee, ankle, and foot. The aim of this study was to explore the nonhip components of turnout to dancers' functional turnout in first position by assessing passive external tibiofemoral rotation and active measures of foot pronation, ie, navicular drop and Foot Posture Index...
July 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28878486/treating-slouchy-hyperkyphosis-posture-with-chiropractic-biophysics-%C3%A2-a-case-report-utilizing-a-multimodal-mirror-image-%C3%A2-rehabilitation-program
#6
Miles O Fortner, Paul A Oakley, Deed E Harrison
[Purpose] To present a case of the non-surgical reduction of 'slouchy' hyperkyphosis posture utilizing the multimodal Chiropractic BioPhysics(®) rehabilitation program emphasizing the mirror image(®) concept. [Subject and Methods] A 27-year-old female presented suffering from neck and back pains, headaches and gait dysfunction. The patient was treated 30 times over a period of 6-months. Treatment consisted of anterior thoracic translation, thoracic extension, and head retraction exercises as well as spinal traction and spinal manipulation...
August 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28878485/non-surgical-relief-of-cervical-radiculopathy-through-reduction-of-forward-head-posture-and-restoration-of-cervical-lordosis-a-case-report
#7
Bret M Wickstrom, Paul A Oakley, Deed E Harrison
[Purpose] To present a case demonstrating the relief of cervical radiculopathy following the dramatic reduction of forward head posture and restoration of the cervical lordosis by use of a multi-modal rehabilitation program incorporating cervical extension traction. [Subject and Methods] A 31-year-old male patient presented with severe cervical radiculopathy and muscle weakness as well as neck pain. The patient had limited neck range of motion, and multiple positive orthopedic tests. Radiography revealed excessive forward head posture with a cervical kyphosis...
August 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28839353/strain-measurements-of-the-tibial-insert-of-a-knee-prosthesis-using-a-knee-motion-simulator
#8
Toshihiro Sera, Yuya Iwai, Takaharu Yamazaki, Tetsuya Tomita, Hideki Yoshikawa, Hisahi Naito, Takeshi Matsumoto, Masao Tanaka
OBJECTIVE: The longevity of a knee prosthesis is influenced by the wear of the tibial insert due to its posture and movement. In this study, we assumed that the strain on the tibial insert is one of the main reasons for its wear and investigated the influence of the knee varus-valgus angles on the mechanical stress of the tibial insert. METHODS: Knee prosthesis motion was simulated using a knee motion simulator based on a parallel-link six degrees-of-freedom actuator and the principal strain and pressure distribution of the tibial insert were measured...
December 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28835524/distinct-coordinate-systems-for-adaptations-of-movement-direction-and-extent
#9
Eugene Poh, Timothy John Carroll, Aymar de Rugy
Learned compensations for perturbed visual feedback of movement extent and direction generalize differently to unpractised movement directions, which suggests different underlying neural mechanisms. Here we investigated whether gain and rotation adaptations are consistent with representation in different coordinate systems. Subjects performed a force aiming task with the wrist, and learned different gains or rotations for different force directions. Generalization was tested without visual feedback for the same extrinsic directions but with the forearm in a different pronation-supination orientation...
August 23, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28833167/coordination-of-the-upper-and-lower-limbs-for-vestibular-control-of-balance
#10
Craig P Smith, Jonathan E Allsop, Michael Mistry, Raymond F Reynolds
Vestibular stimulation can evoke responses in the arm when it is used for balance. Here we determine how these responses are affected by grip context, and how they are coordinated with the rest of the body. Galvanic vestibular stimulation (GVS) was used to evoke balance responses under three conditions of manual contact with an earth-fixed object: no contact (NC), light grip (<1 N) (LG), and firm grip (FG). As grip progressed along this continuum, we observed an increase in GVS-evoked hand force, with a simultaneous reduction in ground reaction force (GRF) through the feet...
August 22, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28830044/postural-orientation-and-standing-postural-alignment-in-ambulant-children-with-bilateral-cerebral-palsy
#11
Małgorzata Domagalska-Szopa, Andrzej Szopa
BACKGROUND: Standing postural alignment in children with cerebral palsy is usually altered by central postural control disorders. The primary aim of this study is to describe body alignment in a quiet standing position in ambulatory children with bilateral cerebral palsy compared with children with typical development. METHODS: Fifty-eight children with bilateral cerebral palsy (aged 7-13years) and 45 age-matched children with typical development underwent a surface topography examination based on Moiré topography and were classified according to their sagittal postural profiles...
August 16, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28829946/the-proprioceptive-system-masterminds-spinal-alignment-insight-into-the-mechanism-of-scoliosis
#12
Ronen Blecher, Sharon Krief, Tal Galili, Inbal E Biton, Tomer Stern, Eran Assaraf, Ditsa Levanon, Elena Appel, Yoram Anekstein, Gabriel Agar, Yoram Groner, Elazar Zelzer
Maintaining posture requires tight regulation of the position and orientation of numerous spinal components. Yet, surprisingly little is known about this regulatory mechanism, whose failure may result in spinal deformity as in adolescent idiopathic scoliosis. Here, we use genetic mouse models to demonstrate the involvement of proprioception in regulating spine alignment. Null mutants for Runx3 transcription factor, which lack TrkC neurons connecting between proprioceptive mechanoreceptors and spinal cord, developed peripubertal scoliosis not preceded by vertebral dysplasia or muscle asymmetry...
August 21, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28822476/posture-alignment-of-adolescent-idiopathic-scoliosis-photogrammetry-in-scoliosis-school-screening
#13
Patrícia Jundi Penha, Nárima Lívia Jundi Penha, Bárbarah Kelly Gonçalves De Carvalho, Rodrigo Mantelatto Andrade, Ana Carolina Basso Schmitt, Sílvia Maria Amado João
OBJECTIVE: The objective of this study was to describe the posture patterns of adolescents diagnosed with adolescent idiopathic scoliosis (AIS) in a scoliosis school screening (SSS). METHODS: Two-dimensional photogrammetry was used to assess the posture of 37 adolescents diagnosed with scoliosis (scoliosis group, SG) (Cobb angle ≥10°) and 76 adolescents with a false positive diagnosis (false positive group, FPG) (Cobb angle <10°, angle of trunk rotation ≥7°)...
July 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28806711/the-potential-of-an-automated-system-to-identify-the-upper-limb-component-of-a-controlled-sitting-posture
#14
María B Sánchez, Ian Loram, John Darby, Paul Holmes, Penelope B Butler
Full trunk control in sitting is demonstrated only when the head-trunk are aligned and upper limbs remain free of contact from mechanical support. These components represent a Controlled Kinetic Chain and can be evaluated in people with neuromotor disability using the Segmental Assessment of Trunk Control (SATCo) when a therapist provides manual trunk support at different segmental levels. However, the SATCo, as with other clinical assessments of control, is subjective. The SATCo was translated to objective rules relating the position of the hands and elbows to the head-trunk and then tested to determine the extent to which this automated objective method replicated the clinical judgement...
August 8, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28757287/sagittal-lumbopelvic-alignment-in-patients-with-low-back-pain-and-the-effects-of-a-high-load-lifting-exercise-and-individualized-low-load-motor-control-exercises-a-randomized-controlled-trial
#15
Lars Berglund, Björn Aasa, Peter Michaelson, Ulrika Aasa
BACKGROUND CONTEXT: Assessment of posture and lumbopelvic alignment is often the main focus in the classification and treatment of patients with low back pain (LBP). However, little is known regarding the effects of motor control interventions on objective measures of lumbopelvic alignment. PURPOSE: The primary aim of this study was to describe the variation of sagittal lumbopelvic alignment in patients with nociceptive mechanical LBP. The secondary aim was to compare the effects of a high-load lifting exercise (HLL) and low-load motor control exercises (LMC) on the change in lumbopelvic alignment with a special emphasis on patients with high and low degrees of lumbar lordosis (lu) and sacral angle (sa)...
July 28, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28754256/on-the-integral-use-of-foundational-concepts-in-verifying-validity-during-skull-photo-superimposition
#16
Paul T Jayaprakash
Often cited reliability test on video superimposition method integrated scaling face-images in relation to skull-images, tragus-auditory meatus relationship in addition to exocanthion-Whitnall's tubercle relationship when orientating the skull-image and wipe mode imaging in addition to mix mode imaging when obtaining skull-face image overlay and evaluating the goodness of match. However, a report that found higher false positive matches in computer assisted superimposition method transited from the above foundational concepts and relied on images of unspecified sizes that are lesser than 'life-size', frontal plane landmarks in the skull- and face- images alone for orientating the skull-image and mix images alone for evaluating the goodness of match...
September 2017: Forensic Science International
https://www.readbyqxmd.com/read/28744061/reversing-thoracic-hyperkyphosis-a-case-report-featuring-mirror-image-%C3%A2-thoracic-extension-rehabilitation
#17
Jason E Miller, Paul A Oakley, Scott B Levin, Deed E Harrison
[Purpose] To present a case of non-surgical reduction of thoracic hyperkyphosis utilizing a multimodal rehabilitation program emphasizing the mirror image(®) concept. [Subject and Methods] A 15-year-old female presented to a rehabilitation office suffering from back and neck pains and headaches. The patient was treated sporadically over a period of 13-months. Treatment consisted of anterior thoracic translation and thoracic extension exercises, spinal traction and spinal manipulation. [Results] After 13-months of treatment the patient displayed a significant reduction in hyperkyphosis and a dramatic correction of her overall posture and spine alignment corresponding to the reduction in back/neck pains, headaches and the simultaneous improvement of various other health issues...
July 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28739151/the-effect-of-immediate-breast-reconstruction-on-thoracic-spine-alignment-after-unilateral-mastectomy
#18
Jae Hoon Jeong, Bomi Choi, Sam Yeol Chang, Eun-Kyu Kim, Eunyoung Kang, Chan Yeong Heo, Yujin Myung
BACKGROUND: Long-term posture change after unilateral mastectomy in breast cancer patients can affect spinal alignment during the postoperative period. We evaluated the effect of immediate breast reconstruction on body posture after surgery by analyzing spinal alignment with radiographic studies. MATERIALS AND METHODS: Preoperative and 2-year postoperative chest radiographs of 116 patients who received immediate breast reconstruction with unilateral mastectomy and 250 patients who underwent unilateral mastectomy without reconstruction were retrospectively reviewed...
June 29, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28649018/rear-foot-kinematics-when-wearing-lateral-wedge-insoles-and-foot-alignment-influence-the-effect-of-knee-adduction-moment-for-medial-knee-osteoarthritis
#19
Tomonori Sawada, Kenji Tanimoto, Kazuki Tokuda, Yoshitaka Iwamoto, Yuta Ogata, Masaya Anan, Makoto Takahashi, Nobuhiro Kito, Koichi Shinkoda
Lateral wedge insoles (LWIs) are prescribed for patients with medial knee osteoarthritis to reduce the external knee adduction moment (KAM). However, the biomechanical effects of LWIs are limited in some patients. The purpose of this study was to investigate whether the biomechanical effects of LWIs depend on individual foot alignment and to examine the relationship between change in KAM and changes in foot and ankle biomechanics when wearing LWIs. Twenty-one patients participated in this study. They were categorized into normal or abnormal foot groups based on the foot posture index (FPI)...
June 15, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28645673/supra-acetabular-line-is-better-than-supra-iliac-line-for-coronal-balance-referencing-a-study-of-perioperative-whole-spine-x-rays-in-degenerative-lumbar-scoliosis-and-ankylosing-spondylitis-patients
#20
Hwee Weng Dennis Hey, Cheung-Kue Kim, Won-Gyu Lee, Hyung-Suk Juh, Ki-Tack Kim
BACKGROUND CONTEXT: The aim of spinal deformity correction is to restore the spine's functional alignment by balancing it in both the sagittal and coronal planes. Regardless of posture, the ideal coronal profile is straight, and therefore readily assessable. PURPOSE: This study compares two radiological methods to determine which better predicts postoperative standing coronal balance. STUDY DESIGN/SETTING: We conducted a single-centre, radiographic comparative study between 2011 and 2015...
June 20, 2017: Spine Journal: Official Journal of the North American Spine Society
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