Does postural chain muscular stiffness reduce postural steadiness in a sitting posture?

Hamaoui, Alain; Bozec, Serge Le; Poupard, Laurent; Bouisset, Simon

doi:10.1016/j.gaitpost.2006.03.012

Cited by 24 publications

(26 citation statements)

References 10 publications

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“…It has been reported that the mean deviation of COP displacement of health person in A/P or M/L axes is 4 mm [1, 13], we set 4 mm as the criterion to tell the effectiveness of a configuration. RMSE of layout 7C is well <4 mm, as shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

The configuration of plantar pressure sensing cells for wearable measurement of COP coordinates

2016

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BackgroundWearable measurement of center of pressure (COP) coordinates is the key of obtaining the measurement of natural gait. Plantar pressure insole is the right sensing unit for plantar pressure monitoring for long-term outdoor measurements and the control of walking assisting exoskeleton robot. It’s necessary to study the configuration of pressure sensing cells.MethodsThis study explored the sensing cell configuration for the plantar pressure insole. The data of plantar pressure of walking is collected for layout variants. The RMSE of COP coordinates estimations are used as the evaluation criteria.ResultsThe RMSE of COP coordinates decreases from 8.00 to 3.20 mm as the amount of pressure sensing cells increases from 2 to 7. The size of pressure sensing cells contribute to reduce the RMSE of COP coordinates and 7 pressure sensing cells, with the size of 2.0–2.5 cm have the satisfying performance. Adding pressure sensing cell in the heel and hallux area increase the accuracy of estimating COP coordinates.ConclusionComparison results indicate that the configuration of 7 pressure sensing cells has a satisfying measurement performance.

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Section: Discussionmentioning

confidence: 99%

The configuration of plantar pressure sensing cells for wearable measurement of COP coordinates

2016

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“…The first study demonstrated that torso muscles co-activation results in higher CP velocity when balancing on an unstable seat [16]. The second one showed that higher isometric push effort leads to larger and faster CP displacements [9]. Hence, increased muscular tension seems likely to disturb postural equilibrium in sitting as well as in standing postures.…”

Section: Increased Muscular Tension Along the Torso Is Likely To Impamentioning

confidence: 99%

“…It was shown that higher active muscular tension along the torso induces larger center of pressure (CP) displacements in a sitting posture [9]. Within the framework of pathology, it has also been suggested that postural sway increase in low back pain could be related to muscular spasms along the spine [10].…”

Section: Introductionmentioning

confidence: 99%

Does increased muscular tension along the torso impair postural equilibrium in a standing posture?

2011

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“…Muscular chains are composed of gravitational muscles that work synergistically in the maintenance of the standing position. It has been described that the shortening of a muscle creates compensation in the adjacent and also in distant muscles 2 .…”

Section: Introductionmentioning

confidence: 99%

Effects of diaphragm stretching on posterior chain muscle kinematics and rib cage and abdominal excursion: a randomized controlled trial

González-Álvarez¹,

Valenza²,

Torres‐Sánchez³

et al. 2016

Braz. J. Phys. Ther.

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BackgroundFew studies have explored the effects of stretching techniques on diaphragm and spine kinematics.ObjectiveTo determine whether the application of diaphragm stretching resulted in changes in posterior chain muscle kinematics and ribcage and abdominal excursion in healthy subjects.MethodEighty healthy adults were included in this randomized clinical trial. Participants were randomized into two groups: the experimental group, which received a diaphragmatic stretching technique, or the placebo group, which received a sham-ultrasound procedure. The duration of the technique, the position of participants, and the therapist who applied the technique were the same for both treatments. Participant assessment (cervical range of movement, lumbar flexibility, flexibility of the posterior chain, and rib cage and abdominal excursion) was performed at baseline and immediately after the intervention by a blinded assessor.ResultsThe mean between-group difference [95% CI] for the ribcage excursion after technique at xiphoid level was 2.48 [0.97 to 3.99], which shows significant differences in this outcome. The remaining between-group analysis showed significant differences in cervical extension, right and left flexion, flexibility of the posterior chain, and ribcage excursion at xiphoid level (p<0.05) in favor of the experimental group.ConclusionDiaphragm stretching generates a significant improvement in cervical extension, right and left cervical flexion, flexibility of the posterior chain, and ribcage excursion at xiphoid level compared to a placebo technique in healthy adults.

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Does postural chain muscular stiffness reduce postural steadiness in a sitting posture?

Cited by 24 publications

References 10 publications

The configuration of plantar pressure sensing cells for wearable measurement of COP coordinates

The configuration of plantar pressure sensing cells for wearable measurement of COP coordinates

Does increased muscular tension along the torso impair postural equilibrium in a standing posture?

Effects of diaphragm stretching on posterior chain muscle kinematics and rib cage and abdominal excursion: a randomized controlled trial

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