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Postural deviations

Adam J Toth, Laurence R Harris, John Zettel, Leah R Bent
Visuo-vestibular recalibration, in which visual information is used to alter the interpretation of vestibular signals, has been shown to influence both oculomotor control and navigation. Here we investigate whether vision can recalibrate the vestibular feedback used during the re-establishment of equilibrium following a perturbation. The perturbation recovery responses of nine participants were examined following exposure to a period of 11 s of galvanic vestibular stimulation (GVS). During GVS in VISION trials, occlusion spectacles provided 4 s of visual information that enabled participants to correct for the GVS-induced tilt and associate this asymmetric vestibular signal with a visually provided 'upright'...
October 17, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Eugenio Maria Pistone, Luca Laudani, Gianluca Camillieri, Alessandra Di Cagno, Gabriele Tomassi, Andrea Macaluso, Arrigo Giombini
OBJECTIVE: To assess the effects of adding a whole-body vibration protocol at optimal frequency (WBV-OF) to a traditional rehabilitation programme (TRP) early after anterior cruciate ligament reconstruction, on maximal strength and balance, in comparison with a traditional rehabilitation programme. DESIGN: A total of 34 anterior cruciate ligament reconstructed patients with hamstring-tendon graft underwent either 4 weeks of WBV-OF training in addition to a traditional rehabilitation programme, or a traditional rehabilitation programme only, starting from the first month after surgery...
September 28, 2016: Journal of Rehabilitation Medicine
Nicola Marchili, Eleonora Ortu, Davide Pietropaoli, Ruggero Cattaneo, Annalisa Monaco
Stomatognathic system is strictly correlated to other anatomical regions; many studies investigated relationship between temporomandibular joint and posture, several articles describe cranio-facial pain from dental causes, such as trigger points. Until now less interest has been given to connections between dental occlusion and ophthalmology, even if they are important and involving. Clinical experience in dental practice claims that mandibular latero-deviation is connected both to eye dominance and to defects of ocular convergence...
2016: Open Dentistry Journal
Frank J Wolters, Francesco U S Mattace-Raso, Peter J Koudstaal, Albert Hofman, M Arfan Ikram
BACKGROUND: Orthostatic hypotension (OH) is a common cause of transient cerebral hypoperfusion in the population. Cerebral hypoperfusion is widely implicated in cognitive impairment, but whether OH contributes to cognitive decline and dementia is uncertain. We aimed to determine the association between OH and the risk of developing dementia in the general population. METHODS AND FINDINGS: Between 4 October 1989 and 17 June 1993, we assessed OH in non-demented, stroke-free participants of the population-based Rotterdam Study...
October 2016: PLoS Medicine
Preeti Patil-Chhablani, Krishnapriya Kothamasu, Ramesh Kekunnaya, Virender Sachdeva, Vivek Warkad
PURPOSE: To evaluate the surgical outcome of augmented superior rectus transposition (SRT) and medial rectus recession (MRc) in patients with abducens nerve palsy. METHODS: The medical records of consecutive patients with abducens nerve palsy who underwent unilateral or bilateral simultaneous SRT with MRc from January 2012 to December 2014. Patients with previous strabismus surgery or botulinum toxin injection were excluded. Primary outcome measures were esotropia in primary position and abduction deficit...
October 7, 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
I-Chieh Lee, Matheus M Pacheco, Karl M Newell
This study investigated two contrasting assumptions of the regulation of posture: namely, fixed and moving reference point control. These assumptions were tested in terms of time-dependent structure and data distribution properties when stability is manipulated. Fifteen male participants performed a tightrope simulated balance task that is, maintaining a tandem stance while holding a pole. Pole length (and mass) and the standing support surface (fixed surface/balance board) were manipulated so as to mechanically change the balance stability...
September 28, 2016: Gait & Posture
Imen Fekhfekh, Abdelmoneem Yahia, Mokhtar Chaabene, Salma Jribi, Nizar Suissi, Mohamed Habib Elleuch, Sameh Ghroubi
OBJECTIVE: To study the acute effect of static and dynamic stretching on the knee muscle strength and postural capacity in athletes. PATIENTS AND METHODS: Fifteen judokas performed 2 stretching protocols (static and dynamic) on the muscles of both lower limbs with an interval of 48hours in a random order. An evaluation of the dominant knee muscle strength with an isokinetic dynamometer CybexNormII was performed before and after each stretching protocol in a concentric mode at a speed of 60 and 180°/s...
September 2016: Annals of Physical and Rehabilitation Medicine
Abdelmoneem Yahia, Houcem Ksentini, Salma Jribi, Atika Mellek, Mohamed Habib Elleuch, Sameh Ghroubi
OBJECTIVE: The aim of the study was to investigate the relations between isokinetic muscle strength of the knee, postural profile and physical function in knee osteoarthritis patients. MATERIAL/PATIENTS AND METHODS: We included patients with advanced unilateral osteoarthritis (grades III or IV graded radiographically by Lawrence classification). We assessed functional impairment by the WOMAC score in its Arabic version, the strength of the knee muscles by isokinetic dynamometry and postural profile via the Satel(®) platform in bipodal and monopodal conditions in open and closed eyes...
September 2016: Annals of Physical and Rehabilitation Medicine
Salma Jeribi, Abdelmoneem Yahia, Imen Achour, Bouthaina Hammemi, Abdelmoneem Ghorbel, Mohamed Habib Elleuch, Sameh Ghroubi
OBJECTIVE: To determine the effect of completing a vestibular rehabilitation treatment protocol on postural balance, dizziness and quality of life in patients with peripheral vertigo. MATERIAL/PATIENTS AND METHODS: A prospective study concerning patients with instability due to unilateral peripheral vestibular disorder. The patients were evaluated with a clinical examination and a test of static and dynamic balance on the Satel(®) platform in which length, mediolateral (LongX) and anterior-posterior deviations (long Y) were monitored...
September 2016: Annals of Physical and Rehabilitation Medicine
Annemarie L Lee, Karl Zabjek, Roger S Goldstein, Dina Brooks
PURPOSE: Changes in posture in individuals with an obstructive respiratory disease have been reported, but the extent of these deviations and their clinical significance is not well understood. This study aimed to systematically review the literature of the skeletal structural alignment in children and adults with an obstructive respiratory disease, describe the measurement techniques used, and determine the clinical relevance of any alternations. METHODS: Observational cohort or cross-sectional studies of postural assessment were identified, with 2 reviewers independently assessing study quality...
September 26, 2016: Journal of Cardiopulmonary Rehabilitation and Prevention
Katharina Marie Steiner, Anne Enders, Wiebke Thier, Giorgi Batsikadze, Nicolas Ludolph, Winfried Ilg, Dagmar Timmann
Transcranial direct current stimulation (tDCS) of the cerebellum is of increasing interest as a non-invasive technique to modulate motor performance and learning in health and disease. Previous studies have shown that cerebellar tDCS facilitates reach adaptation and associative motor learning in healthy subjects. In the present study it was tested whether cerebellar tDCS improves learning of a complex whole body motor skill. Because this task involves learning of posture and balance likely including learning of a new motor sequence and cognitive strategies, cerebellar tDCS was applied over midline cerebellar structures and the posterolateral cerebellar hemispheres...
2016: PloS One
Mitsuru Yagi, Shinjiro Kaneko, Yoshiyuki Yato, Takashi Asazuma
STUDY DESIGN: Prospective case series. OBJECTIVE: To compare the standing balance and posture between patients with ASD and healthy volunteers (HV). SUMMARY OF BACKGROUND DATA: The effect of adult spinal deformity (ASD) on standing posture and balance has not been fully documented. METHODS: 40 consecutive female patients with ASD (65.4 ± 6.7 years, Cobb angle 48.6 ± 20.2°, C7PL 9.1 ± 6.4 cm, and PI-LL 41...
September 23, 2016: Spine
Deniz Somer, Fatma Gul Cinar, Ahmet Kaderli, Firdevs Ornek
PURPOSE: To discuss surgical intervention strategies and innervation among patients with horizontal gaze palsy with concurrent esotropia. METHODS: Five consecutive patients with dorsal pontine lesions are presented. Each patient had horizontal gaze palsy with symptomatic diplopia as a consequence of esotropia in attempted primary gaze and an anomalous head turn to attain single binocular vision. RESULTS: Clinical findings in the first 2 patients led us to presume there was complete loss of rectus muscle function from rectus muscle palsy...
September 17, 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
Guenther Maderbacher, Clemens Baier, Hans-Robert Springorum, Hermann Maderbacher, Anne-Maria Birkenbach, Achim Benditz, Joachim Grifka, Armin Keshmiri
Correct rotational implant alignment is associated with increased postoperative function and implant survival in total knee arthroplasty (TKA). Due to conformity between tibial and femoral implants, particularly in full extension, we assumed a mutual interference of femoral and tibial component rotations. We, therefore, hypothesized that different rotational alignments of the tibial or femoral components change the rotational postures between the tibia and femur after TKA. In 10 healthy knees of whole body cadavers, TKA was performed...
September 19, 2016: Journal of Knee Surgery
Morten Villumsen, Pascal Madeleine, Marie Birk Jørgensen, Andreas Holtermann, Afshin Samani
High level of occupational physical activity (PA), contrary to leisure time activities, is generally associated with detrimental health outcomes. We hypothesized that this contrast may be associated with a different pattern of exposure variability in PA, e.g., forward bending of the trunk. The study was conducted on 657 blue-collar workers. Two accelerometers were used to identify the body posture and forward bending of the trunk during work and leisure time. The pattern of forward bending was analyzed using exposure variation analysis (EVA)...
January 2017: Applied Ergonomics
Valeska Gatica-Rojas, Ricardo Cartes-Velásquez, Rodrigo Salgado-Méndez, Rodolfo Castro-Ramírez
[Purpose] This study aimed to determine the correlation between center of pressure and functional balance in non-faller elderly practitioners of Tai Chi. [Subjects and Methods] For the study, nine non-faller elderly practitioners of Tai Chi who were able to maintain a standing posture and walk independently were recruited. Timed one-leg standing and timed up-and-go tests were used as functional balance tests and force platform to measure the center of pressure. The Pearson correlation coefficient was calculated for the timed up-and-go/timed one-leg standing test scores and center of pressure parameter values...
August 2016: Journal of Physical Therapy Science
Anna Ivarsson, Frida Eek
Reducing costs and improvement of product quality are considered important to ensure productivity within a company. Quality deviations during production processes and ergonomics have previously shown to be associated. This study explored the relationship between physical workload and real (found during production processes) and potential (need of extra time and assistance to complete tasks) quality deviations in a line-based assembly plant. The physical workload on and the work rotation between 52 workstations were assessed...
July 2016: Ergonomics
David Barbado, Janice Moreside, Francisco J Vera-Garcia
BACKGROUND: Although unstable seat methodology has been used to assess trunk postural control, the reliability of the variables that characterize it remains unclear. OBJECTIVE: To analyze reliability and learning effect of center of pressure (COP) and kinematic parameters that characterize trunk postural control performance in unstable seating. The relationships between kinematic and COP parameters also were explored. DESIGN: Test-retest reliability design...
September 9, 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
Satoru Otsuki, Masanori Nagaoka
This study aimed to investigate whether the cognition of spatial distance in reaching movements was decreased in patients with Parkinson's disease (PD) and whether this cognition was associated with various symptoms of PD. Estimated and actual maximal reaching distances were measured in three directions in PD patients and healthy elderly volunteers. Differences between estimated and actual measurements were compared within each group. In the PD patients, the associations between "error in cognition" of reaching distance and "clinical findings" were also examined...
2016: Parkinson's Disease
G E Arblaster, J P Burke
AIM: To describe the surgical management and long-term outcome of a case of symptomatic residual acquired primary position excyclotropia, without changing the primary position vertical deviation. METHODS: This case report describes ipsilateral half tendon width transpositions of the left superior rectus temporally and inferior rectus nasally, combined with right inferior rectus posterior fixation suture at 11 mm. RESULTS: Three days postoperatively, the transposition procedure produced a 10° cyclotorsional change in primary position, resulting in 5° of incyclotorsion (double Maddox rod)...
September 2016: Strabismus
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