Analysis of the sit-stand-sit movement cycle in normal subjects

Kerr, K.M.; White, JA; Barr, D.A.; Mollan, Rab

doi:10.1016/s0268-0033(96)00077-0

Cited by 185 publications

(134 citation statements)

References 16 publications

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“…The sit-to-stand (SiSt) and stand-to-sit (StSi) transitions have also well-known characteristics [51].…”

Section: Recent Studies On Fall Risk Predictionmentioning

confidence: 99%

“…The strategies of SiSt and StSi transitions differs as the person ages, e.g. older persons need greater forward lean of trunk and usually perform the activity of rising more slowly [51], c.f. Some parameters can be extracted using gyroscope during the SiSt and StSi activity, which include the trunk tilt (angle between the vertical axis and the anterior wall of the subject's thorax, Figure 2.15a) and the time and duration of postural transition, as described by [52].…”

Section: Recent Studies On Fall Risk Predictionmentioning

confidence: 99%

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Phone Based Fall Risk Prediction

Guimar�ães

Teixeira

Monteiro

et al. 2012

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Falls in older people can represent serious individual and socioeconomic problems. With the increasing number of older people in the population, management of falls is becoming a challenge.It is now recognized that several risk factors for falling can be identified, and specific interventions can be designed in order to reduce those risks. Several tools were then developed and are now available to screen for fall risk. However, these tools are applied with low frequency, usually requiring the use of expensive equipments that can only be manipulated by experts. This poses some constraints on the prevention of falls, since when these techniques are applied, it can be too late.In order to improve the earlier detection of risks and the application of fall prevention strategies, new community based solutions must be developed. In this project, the mobile phone was purposed as a potential instrument to perform fall risk screening. Several strategies were then evaluated to be adapted to the phone for fall risk screening purposes.Phone's inertial sensors were used to extract some parameters of gait that were related with an increased risk of falling. Foot contacts, gait phases, step length, step duration, walking velocity and variability parameters could then be determined from sensors data. Acceptable measures of step length and walking velocity could be obtained. Additionally, other risk factors were selected to be assessed by self-report, using some clinical scales/questionnaires.Results suggest that phone can be used as a major strategy to improve fall prevention, being a great value for older persons and society.i ii ResumoUma queda num idoso pode resultar em graves problemas individuais e socioeconómicos. Com o aumento do número de idosos na população, a gestão de quedas está a tornar-se um desafio.Actualmente, é possível identificar vários factores de risco para a ocorrência de quedas bem como reduzir esses riscos, através da aplicação da aplicação de intervenções especí-ficas. Nesse sentido, há já algumas ferramentas actualmente disponíveis para avaliar o risco de queda. Estas ferramentas no entanto usadas com baixa frequência, exigindo o uso de equipamentos caros que apenas podem ser manipulados por pessoas qualificadas. Muitas vezes, estas técnicas podem já ser aplicadas tarde demais.Para que a detecção dos riscos e a aplicação de estratégias de prevenção de quedas possa ser feita mais precocemente, é necessário o desenvolvimento de novas soluções dirigidas à população. Neste projecto, foi proposto o uso do telemóvel para a detecção do risco de queda nos idosos.Os sinais dos sensores do telemóvel foram utilizados para extrair parâmetros da marcha relacionados com um risco de queda aumentado. A partir deles, os contactos do pé com o chão, as fases da marcha, o tamanho e duração dos passos, a velocidade e parâmetros que quantificam a variabilidade da marcha puderam ser determinados. Medidas aceitáveis do tamanho dos passos e da velocidade foram obtidas. Adicionalmente, outros factores de risco foram sele...

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“…The sit-to-stand (SiSt) and stand-to-sit (StSi) transitions have also well-known characteristics [51].…”

Section: Recent Studies On Fall Risk Predictionmentioning

confidence: 99%

Section: Recent Studies On Fall Risk Predictionmentioning

confidence: 99%

Phone Based Fall Risk Prediction

Guimar�ães

Teixeira

Monteiro

et al. 2012

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

View full text Add to dashboard Cite

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“…Es la tarea que requiere el mayor esfuerzo mecánico dentro de las actividades cotidianas 44,59 y es un prerrequisito para poder caminar 60 . La capacidad de sentarse de forma controlada posee igual importancia.…”

Section: Movimiento De Sentarse Y Levantarseunclassified

Valoración de la capacidad funcional en el ámbito domiciliario y en la clínica: Nuevas posibilidades de aplicación de la acelerometría para la valoración de la marcha, equilibrio y potencia muscular en personas mayores

Izquierdo

Martínez-Ramírez

Larrión

et al. 2008

Anales Sis San Navarra

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REVISIONESValoración de la capacidad funcional en el ámbito domiciliario y en la clínica. Nuevas posibilidades de aplicación de la acelerometría para la valoración de la marcha, equilibrio y potencia muscular en personas mayores Functional capacity evaluation in a clinical and ambulatory setting: new challenges of accelerometry to assessment balance and muscle power in aging population RESUMENDentro de cualquier población de individuos mayores de 65 años, una proporción sustancial (entre el 6% y el 25%) sufre diferentes síntomas del síndrome de fragilidad. A pesar de la complejidad del termino fragilidad y de las imprecisiones en cuanto a su definición existe un consenso sobre sus síntomas y signos. Las personas que poseen este síndrome presentan pérdidas de fuerza muscular, fatiga, disminución de la actividad física, con un aumento del riesgo de padecer anorexia-pérdida de peso, delirium, hospitalización, declive funcional, deterioro cognitivo, mortalidad, ingreso en residencias, caídas e inestabilidad.

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“…Excessive physical effort and large upper limb forces often lead to syndromes of shoulder overuse. This movement is of great interest in a rehabilitation issue, since it is repeated many times in everyday activities and is usually a prerequisite to gait initiation (Kerr et al, 1997). In healthy subjects, the movement of the trunk precedes the action of the legs: sit-to-stand is impossible without arm support if trunk inertia is not used and associated with a proper postural preparation and action of the legs.…”

Section: Strategic Level: Intention Detectionmentioning

confidence: 99%