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Tanaka, Clarice
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[PMID]:29239806
[Au] Autor:Sá CDSC; Boffino CC; Ramos RT; Tanaka C
[Ad] Endereço:Universidade Federal de São Paulo (UNIFESP), Departamento de Ciências do Movimento Humano, Santos, SP, Brasil. Electronic address: cristina.sa@unifesp.br.
[Ti] Título:Development of postural control and maturation of sensory systems in children of different ages a cross-sectional study.
[So] Source:Braz J Phys Ther;22(1):70-76, 2018 Jan - Feb.
[Is] ISSN:1809-9246
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: To evaluate the stability, postural adjustments and contributions of sensory information for postural control in children. METHODS: 40 boys and 40 girls were equally divided into groups of 5, 7, 9 and 12 years (G5, G7, G9 and G12). All children were submitted to dynamic posturography using a modified sensory organization test, using four sensory conditions: combining stable or sway referencing platform with eyes opened, or closed. The area and displacements of the center of pressure were used to determine stability, while the adjustments were used to measure the speed of the center of pressure displacements. These measurements were compared between groups and test conditions. RESULTS: Stability tends to increase with age and to decrease with sensory manipulation with significant differences between G5 and G7 in different measures. G7 differed from G12 under the conditions of stable and sway platform with eyes open. G9 did not differ from G12. Similar behavior was observed for adjustments, especially in anterior-posterior directions. CONCLUSION: Postural stability and adjustments were associated with age and were influenced by sensory manipulation. The ability to perform anterior-posterior adjustments was more evident and sensory maturation occurred firstly on the visual system, then proprioceptive system, and finally, the vestibular system, reaching functional maturity at nine years of age. Seven-year-olds seem to go through a period of differentiated singularity in postural control.
[Mh] Termos MeSH primário: Equilíbrio Postural/fisiologia
Postura/fisiologia
Propriocepção/fisiologia
[Mh] Termos MeSH secundário: Fatores Etários
Criança
Pré-Escolar
Estudos Transversais
Feminino
Seres Humanos
Masculino
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171215
[St] Status:MEDLINE


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[PMID]:29384614
[Au] Autor:Goossens N; Janssens L; Pijnenburg M; Caeyenberghs K; Van Rompuy C; Meugens P; Sunaert S; Brumagne S
[Ti] Título:Test­Retest Reliability and Concurrent Validity of an fMRI-Compatible Pneumatic Vibrator to Stimulate Muscle Proprioceptors.
[So] Source:Multisens Res;29(4-5):465-92, 2016.
[Is] ISSN:2213-4794
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Processing proprioceptive information in the brain is essential for optimal postural control and can be studied with proprioceptive stimulation, provided by muscle vibration, during functional magnetic resonance imaging (fMRI). Classic electromagnetic muscle vibrators, however, cannot be used in the high-strength magnetic field of the fMRI scanner. Pneumatic vibrators offer an fMRI-compatible alternative. However, whether these devices produce reliable and valid proprioceptive stimuli has not been investigated, although this is essential for these devices to be used in longitudinal research. Test­retest reliability and concurrent validity of the postural response to muscle vibration, provided by custom-made fMRI-compatible pneumatic vibrators, were assessed in a repeated-measures design. Mean center of pressure (CoP) displacements during, respectively, ankle muscle and back muscle vibration (45­60 Hz, 0.5 mm) provided by an electromagnetic and a pneumatic vibrator were measured in ten young healthy subjects. The test was repeated on the same day and again within one week. Intraclass correlation coefficients (ICC) were calculated to assess (a) intra- and interday reliability of the postural responses to, respectively, pneumatic and electromagnetic vibration, and (b) concurrent validity of the response to pneumatic compared to electromagnetic vibration. Test­retest reliability of mean CoP displacements during pneumatic vibration was good to excellent (ICCs = 0.64­0.90) and resembled that of responses to electromagnetic vibration (ICCs = 0.64­0.94). Concurrent validity of the postural effect of pneumatic vibration was good to excellent (ICCs = 0.63­0.95). In conclusion, the proposed fMRI-compatible pneumatic vibrator can be used with confidence to stimulate muscle spindles during fMRI to study central processing of proprioception.
[Mh] Termos MeSH primário: Imagem por Ressonância Magnética/instrumentação
Músculo Esquelético/fisiologia
Equilíbrio Postural/fisiologia
Propriocepção/fisiologia
Vibração
[Mh] Termos MeSH secundário: Feminino
Seres Humanos
Masculino
Reprodutibilidade dos Testes
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; VALIDATION STUDIES
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180306
[Lr] Data última revisão:
180306
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180201
[St] Status:MEDLINE


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[PMID]:28468925
[Au] Autor:Wang YL; Lin GH; Huang YJ; Chen MH; Hsieh CL
[Ad] Endereço:From the Department of Rehabilitation, Chi Mei Medical Center, Tainan, Taiwan (Y.-L.W.); Center of General Education, Southern Taiwan University of Science and Technology, Tainan (Y.-L.W.); School of Occupational Therapy, College of Medicine, National Taiwan University, Taipei (G.-H.L., Y.-J.H., C.-
[Ti] Título:Refining 3 Measures to Construct an Efficient Functional Assessment of Stroke.
[So] Source:Stroke;48(6):1630-1635, 2017 06.
[Is] ISSN:1524-4628
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND AND PURPOSE: The Fugl-Meyer Assessment motor scale, Postural Assessment Scale for Stroke patients, and Barthel Index are widely used to assess patients' upper extremity and lower extremity motor function, balance, and basic activities of daily living after stroke, respectively. However, these 3 measures (72 items) require a great amount of time for assessment. Therefore, we aimed to develop an efficient test, the Functional Assessment of Stroke (FAS). METHODS: The FAS was constructed from 4 short-form tests of the Fugl-Meyer Assessment-upper extremity, Fugl-Meyer Assessment-lower extremity, Postural Assessment Scale for Stroke patients, and Barthel Index based on the results of Rasch analyses and the items' content. We examined the psychometric properties of the FAS, including Rasch reliability, concurrent validity, convergent validity, known-group validity, and responsiveness. RESULTS: The FAS contained 29 items (10, 6, 8, and 5 items for the 4 short-form tests, respectively). The FAS demonstrated high Rasch reliability (0.92-0.94), concurrent validity ( =0.90-0.97 with the original tests), convergent validity ( =0.62-0.94 with the 5-scale Fugl-Meyer Assessment), and known-group validity (significant difference in the FAS scores among 3 groups of disability levels; <0.001). In addition, the responsiveness of the FAS (standardized response mean=0.55-1.93) was similar or significantly superior to those of the original tests (standardized response mean=0.46-1.39). CONCLUSIONS: The FAS contains 29 items and has sufficient Rasch reliability, validities, and responsiveness. These findings support that the FAS is efficient for reliably and validly assessing upper extremity/lower extremity motor function, balance, and basic activities of daily living and for sensitively detecting change in those functions in patients with stroke.
[Mh] Termos MeSH primário: Atividades Cotidianas
Extremidade Inferior/fisiopatologia
Transtornos dos Movimentos/diagnóstico
Equilíbrio Postural/fisiologia
Índice de Gravidade de Doença
Acidente Vascular Cerebral/diagnóstico
Extremidade Superior/fisiopatologia
[Mh] Termos MeSH secundário: Idoso
Idoso de 80 Anos ou mais
Feminino
Seres Humanos
Masculino
Meia-Idade
Transtornos dos Movimentos/etiologia
Psicometria/métodos
Reprodutibilidade dos Testes
Sensibilidade e Especificidade
Acidente Vascular Cerebral/complicações
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1707
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170505
[St] Status:MEDLINE
[do] DOI:10.1161/STROKEAHA.116.015516


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[PMID]:28368719
[Au] Autor:Bermejo JL; García-Massó X; Paillard T; Noé F
[Ad] Endereço:a Department of physical activity and sport sciences , University of Valencia , Valencia , Spain.
[Ti] Título:Fatigue does not conjointly alter postural and cognitive performance when standing in a shooting position under dual-task conditions.
[So] Source:J Sports Sci;36(4):429-435, 2018 Feb.
[Is] ISSN:1466-447X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:This study investigated the effects of fatigue on balance control and cognitive performance in a standing shooting position. Nineteen soldiers were asked to stand while holding a rifle (single task - ST). They also had to perform this postural task while simultaneously completing a cognitive task (dual task - DT). Both the ST and DT were performed in pre- and post-fatigue conditions. In pre-fatigue, participants achieved better balance control in the DT than in the ST, thus suggesting that the increased cognitive activity associated with the DT improves balance control by shifting the attentional focus away from a highly automatised activity. In post-fatigue, balance control was degraded in both the ST and DT, while reaction time was enhanced in the first minutes following the fatiguing exercise without affecting the accuracy of response in the cognitive task, which highlights the relative independent effects of fatigue on balance control and cognitive performance.
[Mh] Termos MeSH primário: Cognição/fisiologia
Fadiga/fisiopatologia
Armas de Fogo
Militares/psicologia
Equilíbrio Postural/fisiologia
Análise e Desempenho de Tarefas
[Mh] Termos MeSH secundário: Adulto
Seres Humanos
Masculino
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170404
[St] Status:MEDLINE
[do] DOI:10.1080/02640414.2017.1313443


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[PMID]:29390267
[Au] Autor:Delli Pizzi S; Bellomo RG; Carmignano SM; Ancona E; Franciotti R; Supplizi M; Barassi G; Onofrj M; Bonanni L; Saggini R
[Ad] Endereço:Department of Neuroscience, Imaging and Clinical Sciences, "G. d'Annunzio" University of Chieti-Pescara.
[Ti] Título:Rehabilitation program based on sensorimotor recovery improves the static and dynamic balance and modifies the basal ganglia neurochemistry: A pilot 1H-MRS study on Parkinson's disease patients.
[So] Source:Medicine (Baltimore);96(50):e8732, 2017 Dec.
[Is] ISSN:1536-5964
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Rehabilitation interventions represent an alternative strategy to pharmacological treatment in order to slow or reverse some functional aspects of disability in Parkinson's disease (PD). To date, the neurophysiological mechanisms underlying rehabilitation-mediated improvement in PD patients are still poorly understood. Interestingly, growing evidence has highlighted a key role of the glutamate in neurogenesis and brain plasticity. The brain levels of glutamate, and of its precursor glutamine, can be detected in vivo and noninvasively as "Glx" by means of proton magnetic resonance spectroscopy (H-MRS). In the present pilot study, 7 PD patients with frequent falls and axial dystonia underwent 8-week rehabilitative protocol focused on sensorimotor improvement. Clinical evaluation and Glx quantification were performed before and after rehabilitation. The Glx assessment was focused on the basal ganglia in agreement with their key role in the motor functions. We found that the rehabilitation program improves the static and dynamic balance in PD patients, promoting a better global motor performance. Moreover, we observed that the levels of Glx within the left basal ganglia were higher after rehabilitation as compared with baseline. Thus, we posit that our sensorimotor rehabilitative protocol could stimulate the glutamate metabolism in basal ganglia and, in turn, neuroplasticity processes. We also hypothesize that these mechanisms could prepare the ground to restore the functional interaction among brain areas deputed to motor controls, which are affected in PD.
[Mh] Termos MeSH primário: Gânglios da Base/metabolismo
Doença de Parkinson/reabilitação
Equilíbrio Postural/fisiologia
[Mh] Termos MeSH secundário: Idoso
Feminino
Ácido Glutâmico/metabolismo
Glutamina/metabolismo
Seres Humanos
Masculino
Doença de Parkinson/fisiopatologia
Projetos Piloto
[Pt] Tipo de publicação:JOURNAL ARTICLE; OBSERVATIONAL STUDY
[Nm] Nome de substância:
0RH81L854J (Glutamine); 3KX376GY7L (Glutamic Acid)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:180203
[St] Status:MEDLINE
[do] DOI:10.1097/MD.0000000000008732


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[PMID]:29386444
[Au] Autor:Mori Y; Kinoshita F; Takada H
[Ad] Endereço:Department of Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui.
[Ti] Título:[Study of Equilibrium Control System during a Lowering at Arousal Level].
[So] Source:Nihon Eiseigaku Zasshi;73(1):34-38, 2018.
[Is] ISSN:1882-6482
[Cp] País de publicação:Japan
[La] Idioma:jpn
[Ab] Resumo:OBJECTIVES: Contingent negative variation (CNV) is an event-related potential proportional to vigilance degree. A CNV graph shows an inverted U-shape, and this bioreaction disappears after falling below a threshold of vigilance degree. Previous studies have shown that the event-related potential gained with time decreases with sleep deprivation, and a decrease in the vigilance degree has been confirmed using Flicker values (FV) and the Stanford Sleepiness Scale (SSS) score. The minimum integrated value was recorded 24 h after the onset of sleep deprivation. In a present study, we used 36-h sleep deprivation. The FVs, SSS scores, and stabilograms were obtained every 90 min for 52 h, except for the 12 h of sleep. We herein examine whether the biocontrol system is changed by sleep deprivation. RESULTS: The time sequences in FV and SSS score showed that the degree of vigilance markedly decreased 22.5 h after the onset of this experiment, which supported CNV disappearance with sleep deprivation. The sway value with subjects' eyes closed was greatest 22.5 h after the onset of this experiment. Furthermore, there were no significant differences between the sway value during the above-mentioned sleep deprivation and that after 12 h of sleep. We considered that the equilibrium function and vigilance after 36-h sleep deprivation did not recover markedly well with sleep of sufficient duration. That is, the biocontrol process in the subconscious still proceeds after awakening. CONCLUSIONS: In this study, we focused on bioprocessing, especially the equilibrium function, during sleep deprivation and investigated the relationship between the equilibrium function and sleep deprivation. We obtained evidence supporting CNV disappearance after sleep deprivation for 36 h. The equilibrium control system without CNV was compared with that with CNV.
[Mh] Termos MeSH primário: Nível de Alerta/fisiologia
Variação Contingente Negativa/fisiologia
Equilíbrio Postural/fisiologia
Privação do Sono/fisiopatologia
[Mh] Termos MeSH secundário: Adulto
Fusão Flicker/fisiologia
Seres Humanos
Masculino
Vigília/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180228
[Lr] Data última revisão:
180228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180202
[St] Status:MEDLINE
[do] DOI:10.1265/jjh.73.34


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[PMID]:28458488
[Au] Autor:Ekechukwu N; Olaleye O; Hamzat T
[Ad] Endereço:Department of Medical Rehabilitation, College of Medicine, University of Nigeria, Enugu, Nigeria.
[Ti] Título:Clinical and Psychosocial Predictors of Community Reintegration of Stroke Survivors Three Months Post In-Hospital Discharge.
[So] Source:Ethiop J Health Sci;27(1):27-34, 2017 Jan.
[Is] ISSN:2413-7170
[Cp] País de publicação:Ethiopia
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: There appears to be a dearth of published literature on the biopsychosocial predictors of community reintegration (CR) among stroke survivors. This study aims to investigate the clinical and psychosocial predictors of CR among stroke survivors three months post in-hospital discharge. METHODS: Fifty-two stroke survivors took part in this prospective exploratory study. The participants' clinical attributes of motor function (MF), balance (Bal) and psychosocial characteristics of Fall Self-Efficacy (FSE), Balance Self-Efficacy (BSE), Self-Esteem (SEst) and Social Support (SS) were assessed pre-discharge and at three months post-discharge. CR was also assessed at three months post-discharge. Data were analyzed using paired t-test, Pearson's Moment correlation and multiple regressions. Level of significance was set at p = 0.05. RESULTS: The mean age of the participants was 61.21±11.25 years with mean hospital length of stay of 5.31±3.71weeks. There were significant differences in the mean MF, Bal, FSE, BSE, SEst and SS scores of the participants pre- and post-discharge (p < 0.05). Also, there was a significant correlation between CR and each of MF, Bal, FSE, BSE, SEst and SS. Pre-discharge Age (ß = -0.226, p = 0.001) and FSE (ß = 1.387, p = 0.040) significantly predicted CR. Post-discharge age (ß = -0.164, p = 0.005) and Bal (ß = 0.142, p = 0.048). FSE (ß = 1.243, p = 0.034) also significantly predicted CR. CONCLUSION: Age, Bal and FSE are important predictors of CR among stroke survivors. Therefore, rehabilitation programmes should focus on improving Bal and FSE in order to enhance community reintegration among stroke survivors.
[Mh] Termos MeSH primário: Nível de Saúde
Reabilitação do Acidente Vascular Cerebral/métodos
Reabilitação do Acidente Vascular Cerebral/psicologia
Acidente Vascular Cerebral/fisiopatologia
Acidente Vascular Cerebral/psicologia
Sobreviventes/estatística & dados numéricos
[Mh] Termos MeSH secundário: Adulto
Fatores Etários
Idoso
Idoso de 80 Anos ou mais
Feminino
Seres Humanos
Masculino
Meia-Idade
Nigéria
Alta do Paciente
Equilíbrio Postural
Estudos Prospectivos
Autoeficácia
Apoio Social
Reabilitação do Acidente Vascular Cerebral/estatística & dados numéricos
Sobreviventes/psicologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180228
[Lr] Data última revisão:
180228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170502
[St] Status:MEDLINE


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[PMID]:29310714
[Au] Autor:Fujiwara K; Yaguchi C; Maekawa M; Kiyota N
[Ad] Endereço:Department of Sports and Health, Kanazawa Gakuin University, 10 Sue-machi, Kanazawa, 920-1392, Japan. fujikatu@kanazawa-gu.ac.jp.
[Ti] Título:Timings of attentional switching to perturbation and postural preparation during transient forward or backward floor translation.
[So] Source:J Physiol Anthropol;37(1):1, 2018 Jan 08.
[Is] ISSN:1880-6805
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Relationships between the timings of attentional switching and postural preparation were investigated using a choice-reaction paradigm with transient floor translation (S2), with the direction indicated by a warning auditory signal (S1). METHODS: Thirteen healthy young adults participated in this study. S2 started 2 s after S1 onset while standing on the platform. The platform moved forward when S1 was a high tone, and backward when S1 was a low tone. In the S1-S2 period, attentional switching was evaluated by P3 component of event-related potential. RESULTS: A shift in the center of pressure in the anteroposterior direction (CoPap) or a continuous increase in postural muscle activation toward S2 was recognized as postural preparation. Changes in postural muscle activation were found just before the CoPap shift. P3 was observed about 250-650 ms after S1. Onset of postural preparation was significantly later (about 200 ms) than latency of P3 (p < 0.001) and correlated strongly with P3 latency (forward: r = 0.81, backward: r = 0.74, p < 0.01). CONCLUSION: Postural preparation for S2 was demonstrated to start after attentional switching from S1 to S2.
[Mh] Termos MeSH primário: Atenção/fisiologia
Equilíbrio Postural/fisiologia
Postura/fisiologia
[Mh] Termos MeSH secundário: Adulto
Eletromiografia
Potenciais Evocados/fisiologia
Feminino
Seres Humanos
Masculino
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180110
[St] Status:MEDLINE
[do] DOI:10.1186/s40101-017-0162-6


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[PMID]:29342191
[Au] Autor:Clarke SB; Deighton K; Newman C; Nicholson G; Gallagher L; Boos CJ; Mellor A; Woods DR; O'Hara JP
[Ad] Endereço:Institute for Sport, Physical Activity & Leisure, Leeds Beckett University, Leeds, United Kingdom.
[Ti] Título:Changes in balance and joint position sense during a 12-day high altitude trek: The British Services Dhaulagiri medical research expedition.
[So] Source:PLoS One;13(1):e0190919, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Postural control and joint position sense are essential for safely undertaking leisure and professional activities, particularly at high altitude. We tested whether exposure to a 12-day trek with a gradual ascent to high altitude impairs postural control and joint position sense. This was a repeated measures observational study of 12 military service personnel (28±4 years). Postural control (sway velocity measured by a portable force platform) during standing balance, a Sharpened Romberg Test and knee joint position sense were measured, in England (113m elevation) and at 3 research camps (3619m, 4600m and 5140m) on a 12-day high altitude trek in the Dhaulagiri region of Nepal. Pulse oximetry, and Lake Louise scores were also recorded on the morning and evening of each trek day. Data were compared between altitudes and relationships between pulse oximetry, Lake Louise score, and sway velocity were explored. Total sway velocity during standing balance with eyes open (p = 0.003, d = 1.9) and during Sharpened Romberg test with eyes open (p = 0.007, d = 1.6) was significantly greater at altitudes of 3619m and 5140m when compared with sea level. Anterior-posterior sway velocity during standing balance with eyes open was also significantly greater at altitudes of 3619m and 5140m when compared with sea level (p = 0.001, d = 1.9). Knee joint position sense was not altered at higher altitudes. There were no significant correlations between Lake Louise scores, pulse oximetry and postural sway. Despite a gradual ascent profile, exposure to 3619 m was associated with impairments in postural control without impairment in knee joint position sense. Importantly, these impairments did not worsen at higher altitudes of 4600 m or 5140 m. The present findings should be considered during future trekking expeditions when developing training strategies targeted to manage impairments in postural control that occur with increasing altitude.
[Mh] Termos MeSH primário: Altitude
Pesquisa Biomédica
Articulação do Joelho/fisiologia
Montanhismo
Equilíbrio Postural
Propriocepção
[Mh] Termos MeSH secundário: Feminino
Seres Humanos
Masculino
Militares
Nepal
Reino Unido
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180118
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190919


  10 / 18766 MEDLINE  
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[PMID]:28415899
[Au] Autor:Kim M; Kim Y; Kim H; Yoon B
[Ad] Endereço:a Department of Physical Therapy , College of Health Science, Korea University , Seoul , South Korea.
[Ti] Título:Specific muscle synergies in national elite female ice hockey players in response to unexpected external perturbation.
[So] Source:J Sports Sci;36(3):319-325, 2018 Feb.
[Is] ISSN:1466-447X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:This study aimed to investigate specific muscle synergies in elite ice hockey players indicating highly developed postural control strategies used to restore balance against unexpected external perturbations. Seven elite athletes (EA) on the women's national ice hockey team and 7 non-athletes (NA) participated in this study. Based on trajectories of centre of mass (COM), analysis periods were divided into an initial phase (a balance disturbance after perturbation onset) and a reversal phase (a balance recovery response), respectively. Muscle synergies were extracted at each phase by using non-negative matrix factorization. k-means cluster analysis was performed to arrange similar muscle synergies in all participants. EA showed significantly shorter recovery period of COM and smaller body sway than NA. In the initial phase, we identified 2 EA-specific synergies related to ankle plantar flexors or neck extensors. In the case of an NA-specific synergy, co-activation of the ankle plantar flexors and dorsiflexors was found. In the reversal phase, no specific muscle synergies were identified. As the results, EA-specific muscle synergies showed low co-activation strategy of agonists and antagonists in ankle and neck extensors. Our results could provide critical information for rehabilitation strategies in athletes requiring high postural stability.
[Mh] Termos MeSH primário: Hóquei/fisiologia
Destreza Motora/fisiologia
Músculo Esquelético/fisiologia
Equilíbrio Postural/fisiologia
[Mh] Termos MeSH secundário: Fenômenos Biomecânicos
Eletromiografia
Feminino
Seres Humanos
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170419
[St] Status:MEDLINE
[do] DOI:10.1080/02640414.2017.1306090



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