نتایج جستجو برای: motor

تعداد نتایج: 159420  

Journal: :رشد و یادگیری حرکتی - ورزشی 0
کیوان ملانوروزی دانشگاه آزاداسلامی.تربیت بدنی حسن خلجی دانشگاه اراک.دکترای تربیت بدنی محمود شیخ دانشگاه تهران.دانشیار تربیت بدنی حکیمه اکبری دانشگاه سمنان.مربی

the purpose of this study was to investigate the effect of a selected motor program (as a motor experience) on manipulative skills in 4-6-year-old boys. 40 subjects were selected randomly using a personal information questionnaire. after the pretest, the ulrich's test of gross motor development (2000) including fundamental motor skills, locomotors skills, manipulative skills and controllin...

Journal: :international journal of automotive engineering 0
mousavi g dashti

induction motors are the most commonly used in the traction industries and electric vehicles, due to their low primary cost, low maintenance costs, and good performance. speed identification is needed for the induction motor drives. however, using of speed sensors in the induction motor drives is associated with problems such as, extra cost, reduced reliability, added mounting space, etc.. ther...

The switched reluctance motor is a simple and robust machine, which has found application over a wide power and speed ranges in different shapes and geometries. This paper introduces a new configuration for a two phase unidirectional switched reluctance motor/field assisted generator. The proposed novel motor/generator consists of two magnetically independent stator and rotor sets (layers), whe...

Journal: :journal of biotechnology and health sciences 0
negar taherkhani faculty of basic sciences, islamic azad university of science and research, tehran, ir iran nematollah gheibi cellular and molecular research center, department of biophysics, qazvin university of medical sciences, qazvin, ir iran; cellular and molecular research center, department of biophysics, qazvin university of medical sciences, qazvin, ir iran. tel: +98-9122302634

background tyrosinase is a copper-containing enzyme, which is widely distributed in microorganisms, animals and plants. it is also a key enzyme in melanin biosynthesis, which plays a crucial role in determining the color of mammalian skin and hair. in addition, unfavorable enzymatic browning of plant-derived foods by tyrosinase causes a decrease in nutritional quality and economic loss of food ...

1. zimmerman m, nitsch m, giraux p, gerloff c, cohen lg, hummel fc. neuroenhancement of the aging brain: restoring skill acquisition in old subjecte. ann neurol 2013; 73(1): 10-15. 2. seidler rd, bernard ja, burutolu tb, fling bw, gordon mt, gwin jt, et al. motor control and aging: links to age-related brain structural, functional, and biochemical effects. neurosci biobehav rev 2010; 34(5): 721-733. 3. nitsche ma, schauenburg a, lang n, liebetanz d, exner c, paulus w, et al. facilitation of implicit motor learning by weak transcranial direct current stimulation of the primary motor cortex in the human. j cogn neurosci 2003; 15(4): 619-626. 4. ehsani f, abdollahi i, mohseni-bandpei ma. a comparative study on middle age and older adult’s implicit learning in serial reaction time task. ptj 2012; 2(1): 9-16 (persian). 5. ehsani f, abdollahi i, mohseni bandpei ma. comparing young and elderly serial reaction time task performance on repeated and random conditions. salmand 2012; 7(2): 68-74 (persian). 6. ehsani f, abdollahi i, mohseni-bandpei ma. the study of explicit knowledge effects on implicit motor learning in older adults. j rehab 2012; 13(2): 56-63 (persian). 7. ehsani f, abdollahi i, mohseni bandpei ma, zahiri n, jaberzadeh sh. motor learning and movement performance: older versus younger adults. basic clin neurosci 2015; 6(4): 231-238. 8. burke sn, barnes ca. neural plasticity in the ageing brain. nat rev neurosci 2006; 7(1): 30-40. 9. berardelli a, inghilleri m, rothwell jc, romeo s, curra a, gilio f, et al. facilitation of muscle evoked responses after repetitive cortical stimulation in man. exp brain res 1998; 122(1): 79-84. 10. ehsani f, bakhtiary a, jaberzadeh s, talimkhani a, hajihasani a. differential effects of primary motor cortex and cerebellar transcranial direct current stimulation on motor learning in healthy individuals: a randomized double-blind sham-controlled study. neurosci res 2016; 112: 10-19. 11. kuo mf, paulus w, nitsche ma. therapeutic effects of non-invasive brain stimulation with direct currents (tdcs) in neuropsychiatric diseases. neuroimage 2014; 85 pt 3: 948-960. 12. jeffery dt, norton ja, roy fd, gorassini ma. effects of trans cranial direct current stimulation on the excitability of the leg motor cortex. exp brain res 2007; 182(2): 281-287. 13. stagg cj, jayaram g, pastor d, kincses zt, matthews pm, johansen-berg h. polarity and timing-dependent effects of trans cranial direct current stimulation in explicit motor learning. neuropsychologia 2011; 49(5): 800-804. 14. reis j, schambra hm, cohen lg, buch er, fritsch b, zarahn e, et al. noninvasive cortical stimu- lation enhances motor skill acquisition over multiple days through an effect on consolidation. proc natl acad sci usa 2009; 106(5): 1590-1595. 15. hummel fc, heise k, celnik p, floel a, gerioff c, cohen lg. facilitating skilled right hand motor function in older subjects by anodal polarization over the left primary motor cortex. neurobiol aging 2009; 31(12): 2160-2168. 16. nitsche ma, cohen lg, wassermann em, priori a, lang m, antal a, et al. trans cranial direct current stimulation: state of the art 2008. brain stimul 2008; 1(3): 206-223. 17. jones kt, stephens ja, alam m, bikson m, berryhill me. longitudinal neurostimulation in older adults improves working memory. plos one 2015; 10: ed121904. 18. flöela a, suttorpd w, kohld o, kürtend j, lohmannd h, breitensteind c, et al. non-invasive brain stimulation improves object-location learning in the elderly. neurol aging 2012; 33(8): 1682-1689. 19. goodwill am, reynolds j, daly rm, kidgell dj. formation of cortical plasticity in older adults following tdcs and motor training. front aging neurosci 2013; 5: 87. 20. harty s, robertson ih, miniussi c, sheehy oc, devine ca, mccreery s, et al. transcranial direct current stimulation over right dorsolateral prefrontal cortex enhances error awareness in older age. j neurosci 2014; 34(10): 3646-3652. 21. hardwick rm, celnik pa. cerebellar direct current stimulation enhances motor learning in older adults. neurobiol aging 2014; 35(10): 2217-2221.

Journal: :مجله دانشگاه علوم پزشکی مازندران 0
محدثه حافظ یوسفی mohaddeseh hafez yosefi msc student in physiotherapy, student research committee, semnan university of medical sciences, semnan, iranدانشجوی کارشناسی ارشد فیزیوتراپی، کمیته تحقیقات دانشجویی، دانشگاه علوم پزشکی سمنان، سمنان، ایران زهرا یاجدی zahra yagedi bsc student in physiotherapy, student research committee, semnan university of medical sciences, semnan, iranدانشجوی کارشناسی فیزیوتراپی، کمیته تحقیقات دانشجویی، دانشگاه علوم پزشکی سمنان، سمنان، ایران زهرا احمدی زاده zahra ahmadizadeh msc in occupational therapy, neuromuscular rehabilitation research center, semnan university of medical sciences, semnan, iranکارشناسی ارشد کاردرمانی، مرکز تحقیقات توانخبشی عصبی عضلانی، دانشگاه علوم پزشکی سمنان، سمنان، ایران فاطمه احسانی fatemeh ehsani assistant professor, department of physiotherapy, neuromuscular rehabilitation research center, semnan university of medical sciences, semnan, iranسمنان: مرکز تحقیقات توانبخشی عصبی عضلانی، دانشگاه علوم پزشکی سمنان

abstract background and purpose: aging is associated with brain changes and reduction in motor skill acquisi­tion that can limit its functional capacity. one of the effective interventions is using transcranial direct current stimulation (tdcs). the aim of this systematic review was to assess the effect of tdcs on learning and motor skill in healthy older adults. materials and methods: a litera...

Journal: :health scope 0
mahdi mohammadi health promotion research center, zahedan university of medical sciences, , ir iran +98-9155412155, [email protected] mahmoud imani zahedan university of medical sciences,, ir iran fatemeh tajari zahedan university of medical sciences,, ir iran farzad akbari zahedan university of medical sciences,, ir iran fariborz rashedi zahedan university of medical sciences,, ir iran ardavan ghasemi zahedan university of medical sciences,, ir iran

background: motor vehicle crashes (mvc) are considered to be the most common safety challenge, causing more than a million deaths worldwide annually. objectives: the current study was aimed at identifying the etiological role of human and vehicle safety factors in road crashes, and their effects on the severity of injury and fatality in the sistan and baluchistan province, south east iran. pati...

Objectives: Motor therapy plays a key role on the bilateral coordination skills and motor activities of children with Intellectual Disability (ID). The present research aimed to investigate the effectiveness of motor therapy on motor skills and bilateral coordination skills of students with ID.  Methods: This was a quasi-experimental research with pre-test and post-test and control group desig...

The Brushless DC (BLDC) motor is a simple robust machine which has found application over a wide power and speed of ranges in different shapes and geometry. This paper briefly reviews the fundamentals behind the motor and also the different types of BLDC motors with different geometries and then presents a new configuration for BLDC motor/generator, which does not use a permanent magnet in the ...

Journal: :international journal of molecular and cellular medicine 0
effat barghi cellular and molecular biology research center (cmbrc), babol university of medical sciences, babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) margaret h.gladden faculty member of institute of biomedical and life sciences, west medical building, university of glasgow, scotland, uk.

motor units (mus) reflect the function of the central nervous motor system. thus, the estimated mu number is a good option to investigate the functional movement disorder in the parkinson’s disease (pd). the purpose of this study was to compare the estimated mus number in the medial gastrocnemius (mg) muscle of the normal rats and those with the parkinsonism. the mg muscle of two age-matched gr...

Journal: :iranian journal of child neurology 0
f. sajedi md associate professor of pediatrics, clinical sciences dept., & pediatric neurorehabilitation research center, university of social welfare and rehabilitation sciences, tehran, iran mph r. vameghi md assistant professor of pediatrics, clinical sciences dept., & pediatric neuro- rehabilitation research center, university of social welfare and rehabilitation sciences, tehran, iran m.a. mohseni bandpei phd associate professor, physiotherapy dept., university of social welfare and rehabilitation sciences, tehran, iran v. alizad bsc occupational therapist, university of social welfare and rehabilitation sciences, tehran, iran s. hemmati gorgani md assistant professor, psychiatry dept., university of social welfare and rehabilitation sciences, tehran, iran s. shahshahani pour md pediatrician, pediatric neurorehabilitation research center, university of social welfare & rehabilitation sciences, tehran, iran

objective the purpose of this study was to determine the prevalence and the most common risk factors of motor developmental delay in infants. materials & methods following ethical approval, a study was carried out on the prevalence and risk factors of infants with motor developmental delay. the first stage was conducted through a cross-sectional study to determine the prevalence of motor develo...

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