LIVIVO - Search results -

Search results

Result 1 - 10 of total 353

Search options

Article ; Online: Identification of Neurodegenerative Diseases From Gait Rhythm Through Time Domain and Time-Dependent Spectral Descriptors.

Mengarelli, Alessandro / Tigrini, Andrea / Fioretti, Sandro / Verdini, Federica

IEEE journal of biomedical and health informatics

2022 Volume 26, Issue 12, Page(s) 5974–5982

Abstract: The analysis of gait rhythm by pattern recognition can support the state-of-the-art clinical methods for the identification of neurodegenerative diseases (NDD). In this study, we investigated the use of time domain (TD) and time-dependent spectral ... ...

Abstract	The analysis of gait rhythm by pattern recognition can support the state-of-the-art clinical methods for the identification of neurodegenerative diseases (NDD). In this study, we investigated the use of time domain (TD) and time-dependent spectral features (PSDTD) for detecting NDD sub-types. Also, we proposed two classification pathways for supporting NDD diagnosis, the first one made by a two-step learning phase, whereas the second one encompasses a single learning model. We considered stride-to-stride fluctuation data of healthy controls (CN), patients affected by Parkinson's disease (PD), Huntington's disease (HD), and amyotrophic lateral sclerosis (AS). TD feature set provided good results to distinguish between CN and NDDs, while performances lowered for specific NDD identification. PSDTD features boosted the accuracy of each binary identification task. With k-nearest neighbor classifier, the first diagnosis pathway reached 98.76% accuracy to distinguish between CN and NDD and 94.56% accuracy for NDDs sub-types, whereas the second pathway offered an overall accuracy of 94.84% for a 4-class classification task. Outcomes of this study indicate that the use of TD and PSDTD features, simple to extract and with a low computational load, provides reliable results in terms of NDD identification, being also useful for the development of gait rhythm computer-aided NDD detection systems.
MeSH term(s)	Humans ; Neurodegenerative Diseases/diagnosis ; Parkinson Disease/diagnosis ; Huntington Disease/diagnosis ; Gait ; Amyotrophic Lateral Sclerosis/diagnosis
Language	English
Publishing date	2022-12-07
Publishing country	United States
Document type	Journal Article
ZDB-ID	2695320-1
ISSN	2168-2208 ; 2168-2194
ISSN (online)	2168-2208
ISSN	2168-2194
DOI	10.1109/JBHI.2022.3205058
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 5483: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: A Minimal and Multi-Source Recording Setup for Ankle Joint Kinematics Estimation During Walking Using Only Proximal Information From Lower Limb.

Mobarak, Rami / Tigrini, Andrea / Verdini, Federica / Al-Timemy, Ali H / Fioretti, Sandro / Burattini, Laura / Mengarelli, Alessandro

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society

2024 Volume 32, Page(s) 812–821

Abstract: In this study, a minimal setup for the ankle joint kinematics estimation is proposed relying only on proximal information of the lower-limb, i.e. thigh muscles activity and joint kinematics. To this purpose, myoelectric activity of Rectus Femoris (RF), ... ...

Abstract	In this study, a minimal setup for the ankle joint kinematics estimation is proposed relying only on proximal information of the lower-limb, i.e. thigh muscles activity and joint kinematics. To this purpose, myoelectric activity of Rectus Femoris (RF), Biceps Femoris (BF), and Vastus Medialis (VM) were recorded by surface electromyography (sEMG) from six healthy subjects during unconstrained walking task. For each subject, the angular kinematics of hip and ankle joints were synchronously recorded with sEMG signal for a total of 288 gait cycles. Two feature sets were extracted from sEMG signals, i.e. time domain (TD) and wavelet (WT) and compared to have a compromise between the reliability and computational capacity, they were used for feeding three regression models, i.e. Artificial Neural Networks, Random Forest, and Least Squares - Support Vector Machine (LS-SVM). BF together with LS-SVM provided the best ankle angle estimation in both TD and WT domains (RMSE < 5.6 deg). The inclusion of Hip joint trajectory significantly enhanced the regression performances of the model (RMSE < 4.5 deg). Results showed the feasibility of estimating the ankle trajectory using only proximal and limited information from the lower limb which would maximize a potential transfemoral amputee user's comfortability while facing the challenge of having a small amount of information thus requiring robust data-driven models. These findings represent a significant step towards the development of a minimal setup useful for the control design of ankle active prosthetics and rehabilitative solutions.
MeSH term(s)	Humans ; Ankle Joint/physiology ; Biomechanical Phenomena ; Reproducibility of Results ; Walking/physiology ; Lower Extremity ; Muscle, Skeletal/physiology ; Gait/physiology ; Electromyography/methods ; Knee Joint
Language	English
Publishing date	2024-02-19
Publishing country	United States
Document type	Journal Article
ZDB-ID	1166307-8
ISSN	1558-0210 ; 1063-6528 ; 1534-4320
ISSN (online)	1558-0210
ISSN	1063-6528 ; 1534-4320
DOI	10.1109/TNSRE.2024.3364976
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 4726: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Center of pressure plausibility for the double-link human stance model under the intermittent control paradigm.

Tigrini, Andrea / Verdini, Federica / Fioretti, Sandro / Mengarelli, Alessandro

Journal of biomechanics

2021 Volume 128, Page(s) 110725

Abstract: Despite human balance maintenance in quiet conditions could seem a trivial motor task, it is not. Recently, the human stance was described through a double link inverted pendulum (DIP) actively controlled at the ankle with an intermittent proportional (P) ...

Abstract	Despite human balance maintenance in quiet conditions could seem a trivial motor task, it is not. Recently, the human stance was described through a double link inverted pendulum (DIP) actively controlled at the ankle with an intermittent proportional (P) and derivative (D) control actions based on the sway of a virtual inverted pendulum (VIP) that links the ankle joint with the DIP center of mass. Such description, encompassing both the mechanical model and the intermittent control policy, was referred as the DIP/VIP human stance model, and it showed physiologically plausible kinematic patterns. In this study a mathematical formalization of the Center of pressure (COP) for a DIP structure was developed. Then, it was used in conjunction with an intermittently controlled DIP/VIP model to assess its kinetic plausibility. Three descriptors commonly employed in posturography were selected among six based on their capability to discriminate between young (Y) and elderly (O) adults groups. Then, they were applied to assess whether variations of the P-D parameters affect the synthetic COP. The results showed that DIP/VIP model can reproduce COP trajectories, showing characteristics similar to the Y and O groups. Moreover, it was observed that both P and D parameters increased passing from Y to O, indicating that the COP obtained from the DIP/VIP model is able to highlight differences in balance control between groups. The study hence promote the use of DIP/VIP in posturography, where inferential techniques can be applied to characterize neural control.
MeSH term(s)	Aged ; Ankle Joint ; Biomechanical Phenomena ; Humans ; Models, Biological ; Postural Balance ; Posture
Language	English
Publishing date	2021-09-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	218076-5
ISSN	1873-2380 ; 0021-9290
ISSN (online)	1873-2380
ISSN	0021-9290
DOI	10.1016/j.jbiomech.2021.110725
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 700: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Multiscale Fuzzy Entropy Analysis of Balance: Evidences of Scale-Dependent Dynamics on Diabetic Patients With and Without Neuropathy.

Mengarelli, Alessandro / Tigrini, Andrea / Verdini, Federica / Rabini, Rosa Anna / Fioretti, Sandro

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society

2023 Volume PP

Abstract: Postural control is usually assessed by examining the fluctuations of the center of pressure (COP). Balance maintenance is based on sensory feedback and neural interactions, deployed over multiple temporal scales and producing less complex outputs with ... ...

Abstract	Postural control is usually assessed by examining the fluctuations of the center of pressure (COP). Balance maintenance is based on sensory feedback and neural interactions, deployed over multiple temporal scales and producing less complex outputs with aging and disease. This paper aims to investigate postural dynamics and complexity on diabetic patients, since diabetic neuropathy (DN) affects the somatosensory system and impairs postural steadiness. A multiscale fuzzy entropy (MSFEn) analysis, over a wide range of temporal scales, was performed on COP timeseries during unperturbed stance in a group of diabetic individuals without neuropathy and two groups of DN patients, with and without symptoms. A parameterization of the MSFEn curve is also proposed. A significant loss of complexity was recognized for the medial-lateral direction in DN groups with respect to non-neuropathic population. For the anterior-posterior direction, symptomatic DN group showed a lowered sway complexity for longer time scales with respect to non neuropathic and asymptomatic patients. The MSFEn approach and the related parameters highlighted that the loss of complexity might be attributed to different factors depending on sway direction, i.e. related to the presence of neuropathy along the medial-lateral axis and to a symptomatic state on the anterior-posterior direction. Results of this study support the use of the MSFEn for gaining insights into balance control mechanisms for diabetic patients, in particular when comparing non neuropathic with neuropathic asymptomatic patients, whose identification by posturographic analysis would be of great value.
Language	English
Publishing date	2023-02-23
Publishing country	United States
Document type	Journal Article
ZDB-ID	1166307-8
ISSN	1558-0210 ; 1063-6528 ; 1534-4320
ISSN (online)	1558-0210
ISSN	1063-6528 ; 1534-4320
DOI	10.1109/TNSRE.2023.3248322
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 4726: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Cytomegalovirus infection in hematologic malignancy settings other than the allogeneic transplant.

Marchesi, F / Pimpinelli, F / Ensoli, F / Mengarelli, A

Hematological oncology

2017

Abstract: Cytomegalovirus (CMV) infection in clinical settings other than the allogeneic transplant represents a poorly explored issue. Thus, we performed a comprehensive review of the medical literature about CMV infection in patients undergoing autologous ... ...

Abstract	Cytomegalovirus (CMV) infection in clinical settings other than the allogeneic transplant represents a poorly explored issue. Thus, we performed a comprehensive review of the medical literature about CMV infection in patients undergoing autologous hematopoietic stem cell transplant and in other nontransplant-related hematologic patients. In autologous hematopoietic stem cell transplant, a CMV reactivation is reported to occur in up to 41% of CMV seropositive patients, when a prospective monitoring of antigenemia and/or viremia by polymerase chain reaction was adopted. However, more contained frequencies, up to 12%, have been reported when the monitoring criteria were based on a clinically driven diagnostic strategy. The most relevant risk factors appear to be CD34 + selected autografts, total body irradiation, and prior treatment with Alemtuzumab, Fludarabine, or Bortezomib, respectively. Other possible risk factors (ie, prior treatment with Rituximab, T-cell lymphomas, and pretransplant HBcIgG seropositivity) are still debated. In nontransplant settings, the data are very heterogeneous; thus, CMV infection incidence and risk factors are more difficult to establish. Overall, the rate of CMV infection/reactivation ranges between 2 and 67%. High-dose steroids, advanced disease, poor performance status, and treatment with Alemtuzumab, Fludarabine, Bortezomib, and Rituximab appear as the most relevant, though putative, risk factors. Intravenous Ganciclovir represents the gold standard for first-line treatment of CMV infection in these patients. Oral Valganciclovir and Foscarnet are other possible options. Extensive prophylaxis and preemptive therapy are not generally recommended, with the exception of high-risk patients.
Language	English
Publishing date	2017-06-29
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	604884-5
ISSN	1099-1069 ; 0278-0232
ISSN (online)	1099-1069
ISSN	0278-0232
DOI	10.1002/hon.2453
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Cologne/Königswinter

Zs.A 1816: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾

Article: Editorial: Neuromuscular control modelling of static and dynamic balance maintenance.

Mengarelli, Alessandro / Verdini, Federica / Fioretti, Sandro / Ozdemir, Recep Ali / Ritzmann, Ramona

Frontiers in neurology

2022 Volume 13, Page(s) 1079410

Language	English
Publishing date	2022-11-22
Publishing country	Switzerland
Document type	Editorial
ZDB-ID	2564214-5
ISSN	1664-2295
ISSN	1664-2295
DOI	10.3389/fneur.2022.1079410
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Effect of daratumumab on stem cell yields in patients with newly diagnosed multiple myeloma: a report from the Multiple Myeloma Group.

Fazio, F / Passucci, M / Micozzi, J / Di Landro, F / Fianchi, L / Za, T / Manieri, V M / Annibali, O / Cupelli, L / Bongarzoni, V / Gentili, S / De Padua, L / Crisanti, E / Garzia, M G / Rago, A / Piciocchi, A / Mengarelli, A / Morè, S / De Stefano, V /

Bafti, M S / Martelli, M / Petrucci, M T

Bone marrow transplantation

2024

Language	English
Publishing date	2024-03-09
Publishing country	England
Document type	Letter
ZDB-ID	632854-4
ISSN	1476-5365 ; 0268-3369 ; 0951-3078
ISSN (online)	1476-5365
ISSN	0268-3369 ; 0951-3078
DOI	10.1038/s41409-024-02260-z
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 2168: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Biosimilar Filgrastim in Autologous Peripheral Blood Hematopoietic Stem Cell Mobilization and Post-Transplant Hematologic Recovery.

Marchesi, Francesco / Mengarelli, Andrea

Current medicinal chemistry

2016 Volume 23, Issue 21, Page(s) 2217–2229

Abstract: To date, two kinds of Granulocyte Colony-Stimulating Factors (G-CSF) have been approved for autologous peripheral blood hematopoietic stem cell (PBSCs) mobilization and posttransplant hematologic recovery after high-dose chemotherapy: filgrastim ( ... ...

Abstract	To date, two kinds of Granulocyte Colony-Stimulating Factors (G-CSF) have been approved for autologous peripheral blood hematopoietic stem cell (PBSCs) mobilization and posttransplant hematologic recovery after high-dose chemotherapy: filgrastim (originator and biosimilar) and lenograstim. Biosimilar filgrastim has been approved on the basis of comparable efficacy and safety in clinical studies where it has been used as chemotherapy-induced febrile neutropenia prophylaxis, but no specific pre-registration studies have been published in the transplant setting. Hence, there is still general skepticism about the role of biosimilar G-CSFs in this setting of patients. This review of biochemical, pre-clinical and clinical data suggests significant comparability of biosimilar filgrastim with both originator filgrastim and lenograstim in autologous PBSCs mobilization and post-autograft hematologic recovery.
MeSH term(s)	Biosimilar Pharmaceuticals/chemistry ; Biosimilar Pharmaceuticals/pharmacokinetics ; Biosimilar Pharmaceuticals/therapeutic use ; Filgrastim/pharmacokinetics ; Filgrastim/therapeutic use ; Granulocyte Colony-Stimulating Factor/chemistry ; Granulocyte Colony-Stimulating Factor/pharmacokinetics ; Granulocyte Colony-Stimulating Factor/therapeutic use ; Half-Life ; Hematologic Diseases/therapy ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/cytology ; Humans ; Lenograstim ; Recombinant Proteins/chemistry ; Recombinant Proteins/pharmacokinetics ; Recombinant Proteins/therapeutic use ; Transplantation, Autologous
Chemical Substances	Biosimilar Pharmaceuticals ; Recombinant Proteins ; Granulocyte Colony-Stimulating Factor (143011-72-7) ; Lenograstim (6WS4C399GB) ; Filgrastim (PVI5M0M1GW)
Language	English
Publishing date	2016-05-13
Publishing country	United Arab Emirates
Document type	Journal Article ; Review
ZDB-ID	1319315-6
ISSN	1875-533X ; 0929-8673
ISSN (online)	1875-533X
ISSN	0929-8673
DOI	10.2174/0929867323666160517115907
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 4432: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article: Neuromuscular Control Modelling of Human Perturbed Posture Through Piecewise Affine Autoregressive With Exogenous Input Models.

Tigrini, Andrea / Verdini, Federica / Maiolatesi, Marco / Monteriù, Andrea / Ferracuti, Francesco / Fioretti, Sandro / Longhi, Sauro / Mengarelli, Alessandro

Frontiers in bioengineering and biotechnology

2022 Volume 9, Page(s) 804904

Abstract: In this study, the neuromuscular control modeling of the perturbed human upright stance is assessed through piecewise affine autoregressive with exogenous input (PWARX) models. Ten healthy subjects underwent an experimental protocol where visual ... ...

Abstract	In this study, the neuromuscular control modeling of the perturbed human upright stance is assessed through piecewise affine autoregressive with exogenous input (PWARX) models. Ten healthy subjects underwent an experimental protocol where visual deprivation and cognitive load are applied to evaluate whether PWARX can be used for modeling the role of the central nervous system (CNS) in balance maintenance in different conditions. Balance maintenance is modeled as a single-link inverted pendulum; and kinematic, dynamic, and electromyography (EMG) data are used to fit the PWARX models of the CNS activity. Models are trained on 70% and tested on the 30% of unseen data belonging to the remaining dataset. The models are able to capture which factors the CNS is subjected to, showing a fitting accuracy higher than 90% for each experimental condition. The models present a switch between two different control dynamics, coherent with the physiological response to a sudden balance perturbation and mirrored by the data-driven lag selection for data time series. The outcomes of this study indicate that hybrid postural control policies, yet investigated for unperturbed stance, could be an appropriate motor control paradigm when balance maintenance undergoes external disruption.
Language	English
Publishing date	2022-01-21
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2719493-0
ISSN	2296-4185
ISSN	2296-4185
DOI	10.3389/fbioe.2021.804904
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Kinetic data simultaneously acquired from dynamometric force plate and Nintendo Wii Balance Board during human static posture trials.

Mengarelli, Alessandro / Cardarelli, Stefano / Tigrini, Andrea / Fioretti, Sandro / Verdini, Federica

Data in brief

2019 Volume 28, Page(s) 105028

Abstract: Data provided with this article are relative to kinetic measures from standing posture trials in eye open and eye closed conditions of 15 healthy subjects, acquired from a dynamometric force plate and a Nintendo Wii Balance Board (NBB). Data have been ... ...

Abstract	Data provided with this article are relative to kinetic measures from standing posture trials in eye open and eye closed conditions of 15 healthy subjects, acquired from a dynamometric force plate and a Nintendo Wii Balance Board (NBB). Data have been originally collected for a research project aimed at evaluating the reliability of low-cost devices in clinical scenarios. Raw data from the force plate include three ground reaction force components, center of pressure trajectories and torque around the vertical axis. Raw data from the NBB consist of vertical component of the ground reaction force measured by each of the four device sensors. Processed data consist of synchronized center of pressure time-series from both devices, referred to the force plate reference frame. Data were acquired simultaneously from the devices, allowing a direct comparison between the kinetic measures provided by the gold-standard for posture analysis (dynamometric force plate) and a low-cost device (NBB). Utility of present data can be twofold: first they can be used to assess the overall quality of the NBB signals for posturographic analysis by a direct comparison with the same signals acquired from the gold-standard device for kinetic measurement. Secondly, data from the dynamometric force plate can be used
Language	English
Publishing date	2019-12-19
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	2786545-9
ISSN	2352-3409 ; 2352-3409
ISSN (online)	2352-3409
ISSN	2352-3409
DOI	10.1016/j.dib.2019.105028
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

To top

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito