Kinematic-based technique for event time determination during gait

Stanhope, Steven J.; Kepple, Thomas M.; McGuire, Douglas; Roman, Norton

doi:10.1007/bf02446154

Cited by 88 publications

(49 citation statements)

References 10 publications

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“…The second heel strike (after swing phase) was defined using target pattern recognition [22]. FFL and HO were derived using changes in sagittal plane kinematics of a whole foot segment relative to the leg, following Richards [23].…”

Section: Discussionmentioning

confidence: 99%

Movement of the human foot in 100 pain free individuals aged 18¿45: implications for understanding normal foot function

Nester

Jarvis

Jones

et al. 2014

Journal of Foot and Ankle Research

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Background: Understanding motion in the normal healthy foot is a prerequisite for understanding the effects of pathology and thereafter setting targets for interventions. Quality foot kinematic data from healthy feet will also assist the development of high quality and research based clinical models of foot biomechanics. To address gaps in the current literature we aimed to describe 3D foot kinematics using a 5 segment foot model in a population of 100 pain free individuals. Methods: Kinematics of the leg, calcaneus, midfoot, medial and lateral forefoot and hallux were measured in 100 self reported healthy and pain free individuals during walking. Descriptive statistics were used to characterise foot movements. Contributions from different foot segments to the total motion in each plane were also derived to explore functional roles of different parts of the foot.Results: Foot segments demonstrated greatest motion in the sagittal plane, but large ranges of movement in all planes. All foot segments demonstrated movement throughout gait, though least motion was observed between the midfoot and calcaneus. There was inconsistent evidence of movement coupling between joints. There were clear differences in motion data compared to foot segment models reported in the literature. Conclusions:The data reveal the foot is a multiarticular structure, movements are complex, show incomplete evidence of coupling, and vary person to person. The data provide a useful reference data set against which future experimental data can be compared and may provide the basis for conceptual models of foot function based on data rather than anecdotal observations.

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Section: Discussionmentioning

confidence: 99%

Movement of the human foot in 100 pain free individuals aged 18¿45: implications for understanding normal foot function

Nester

Jarvis

Jones

et al. 2014

Journal of Foot and Ankle Research

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show abstract

“…Automatic algorithms which use thresholds on the height or velocity of markers have been used with more variable results [10,11]. Stanhope et al [12] developed a method which accurately determined timing information using a kinematic model. However, this model was individual-specific and required a separate method, such as the use of a force plate, to determine the initial occurrence of gait events.…”

Section: Introductionmentioning

confidence: 99%

Automatic detection of gait events using kinematic data

et al. 2007

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“…Only data from the right lower limb in the sagittal plane were used. Temporal instants of the right and left heels at initial contact with the surface and at toe-off were determined from the records of the retro-reflective markers located on the feet (Stanhope, Kepple, McGuire, & Roman, 1990). Consequently, the local minimum for the ground reaction force was detected in the right and left lower extremity (Figure 1).…”

Section: Discussionmentioning

confidence: 99%

Test-retest reliability of the net joint power transferred by the lower limbs during walking in healthy men

Jandacka¹,

Uchytil²,

Svoboda³

et al. 2013

Acta Gymnica

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OBJECTIVE:To determine the reliability of the measurement of net joint power during repeated gait measurements within one day and between two different measurement days. METHODS: Thirty able-bodied men who underwent repeated gait measurements within a day and between days participated in this research. An acceptable trial was one in which the participant complied with the range of walking speed 1.45 m/s ± 5%. Three-dimensional angles, angular velocities, net moments of force and net power for the ankle, knee and hip joints were determined using external passive reflective markers, an 8-camera motion analysis system and two force plates. RESULTS: This study presents the patterns of the net power in the fundamental joints of the lower limbs in young healthy men at standard gait velocity. Intraclass correlation coefficients for net joint power measure reached values in the range of .70 to .89 on the first day, from .69 to .86 on the second day, and from .67 to .83 in total. CONCLUSION: The reliability of the measurement of the peak net joint power within one day and between the two measurement days was evaluated as satisfactory. The study provides the value of minimal detectable change for the peak net power of the lower limb in the sagittal plane during gait. The net joint power appears to be a reliable measure and could be used in practice.

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Kinematic-based technique for event time determination during gait

Cited by 88 publications

References 10 publications

Movement of the human foot in 100 pain free individuals aged 18¿45: implications for understanding normal foot function

Movement of the human foot in 100 pain free individuals aged 18¿45: implications for understanding normal foot function

Automatic detection of gait events using kinematic data

Test-retest reliability of the net joint power transferred by the lower limbs during walking in healthy men

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