Studies of human locomotion: past, present and future

Andriacchi, Thomas P.; Alexander, Eugene J.

doi:10.1016/s0021-9290(00)00061-0

Cited by 194 publications

(111 citation statements)

References 25 publications

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“…For this end, we can use soft tissue artefacts (STA) models [39]. These artifacts have been recognized to be the major source of error in human motion analysis [40]. The reconstruction error could also be computed by weighting differently each marker, unlike the global indicator used in this study.…”

Section: Comparison With the Reference Dynamic Residualsmentioning

confidence: 99%

Uncertainty propagation in multibody human model dynamics

2017

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In biomechanics, calibration of body segment inertial parameters (BSIP) is crucial to take into account subject morphological specificities. To avoid strenuous protocols, identification methods based on rigid body dynamics laws have been proposed. Thanks to a motion capture system and force platforms, these methods optimize BSIP by minimizing errors in the equations of motion. These errors can be defined as the dynamic residuals reflecting inaccuracies arising from estimated BSIP, as well as from kinematics and force plate measurements. The current study aims at evaluating the part of uncertainty on the dynamic residuals directly related to kinematics and force plate measurements. To answer this question, we captured the movements of 10 participants performing a standardized motion. We then applied a Monte Carlo-based approach to introduce variations in the kinematics and force plate measurements, and evaluated the reconstructed difference on the dynamic residuals. Results show that, first, the BSIP evaluation using a regression method seemed to be an acceptable estimate for the studied subjects. Second, the part of uncertainty in the dynamic residuals was significantly higher than the dynamic residuals obtained. In conclusion, a subject-specific calibration of the BSIP based on dynamic residuals, for this model and protocol, seems irrelevant and prone to overfitting of BSIP.

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Section: Comparison With the Reference Dynamic Residualsmentioning

confidence: 99%

Uncertainty propagation in multibody human model dynamics

2017

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“…This assessment is made through an observational analysis of the pass, which allows you to analyze carefully the behavior of the different districts, joint and/or segments (from the toes to the ankle, knee, hip and pelvis and trunk) during the individual phases of the gait cycle. However, the poor reliability and the absence of quantitative data represent an important limit of this method [9].…”

Section: Introduction mentioning

confidence: 99%

Motion Analysis Technologies for Biomechanical Gait and Postural Analysis in Ballet

Vastola¹,

Coppola²,

Sibilio³

2016

JSS

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Abstract:The dominant element in ballet is the search for flawless performance. The specific training required from early years may cause some changes compared to the normal human anatomy and physiology. The aim of this study was to investigate the potential of motion analysis technologies for the evaluation of frequent changes in biomechanics of posture and dance. This paper presents an overview of the literature on the main postural compensation employed by the dancer; more specifically on the training effect of the fundamental basic techniques in ballet. It then focuses on the characteristics and potential of motion analysis technologies for the biomechanical evaluation of the dancer. The technologies investigated in this study are the optoelectronic system of gait analysis, which is one of the most advanced technologies for multifactorial motion analysis, integrated with the use of the force platform and the electromyography. These technologies enable a quantitative three-dimensional integrated multifactorial motion analysis in relation to kinematics and dynamics. Through specific systems of motion analysis, the instrumental analysis can describe objectively and with reasonable accuracy the biomechanics, the postural compensation, and the gait of the dancer.

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“…La mayor fuente de error en análisis de movimientos humanos mediante fotogrametría viene derivada de los artefactos de la piel [4]. Los artefactos implican la existencia de movimiento relativo entre los marcadores y la estructuraósea que define el segmento del cual queremos analizar su movimiento.…”

Section: Determinación Del Error En El Sistema De Medidaunclassified

“…Estas diferencias aunque fueron significativas, son muy inferiores a la variabilidad intersujeto, por lo que su utilidad como variable de clasificación es muy pequeña. Las diferencias referidas son de un promedio de [3][4] o , siendo mayores para las mujeres.…”

Section: Análisis De La Influencia Del Sexounclassified

“…La primera razón puede ser por falta de potencia estadística. En nuestro estudio, el tamaño muestral fue de 50 personas (25 hombres y 25 mujeres), que juntamente con una desviación típica de 17 o , proporciona una potencia estadística inferior al 80 % para detectar diferencias de [3][4] o . En los estudios de Prushansky, Youdas y Dvorak los tamaños muestrales fueron de 175, 317 y 150, respectivamente.…”

Section: Análisis De La Influencia Del Sexounclassified

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Cinemática del raquis cervical. Definición de patrones de movimiento para la valoración funcional en el síndrome del latigazo cervical

Bertomeu¹,

Ma²

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Studies of human locomotion: past, present and future

Cited by 194 publications

References 25 publications

Uncertainty propagation in multibody human model dynamics

Uncertainty propagation in multibody human model dynamics

Motion Analysis Technologies for Biomechanical Gait and Postural Analysis in Ballet

Cinemática del raquis cervical. Definición de patrones de movimiento para la valoración funcional en el síndrome del latigazo cervical

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