Georgios Tsigaras

Dr. Georgios Tsigaras


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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10 September 2024 in International journal of health sciences
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PPProsiniklis Polymeris
Prosiniklis Polymeris
KIKallistratos Ilias
Kallistratos Ilias
XAXristara Papadopoulou Alexandra
Xristara Papadopoulou Alexandra
Georgios TsigarasGeorgios Tsigaras
Georgios Tsigaras
ACAnna Chalkia
Anna Chalkia
DKDimitra Katsantoni
Dimitra Katsantoni
Introduction: Trisomy 21 (Down syndrome) is the most common genetic disorder, which is caused by a chromosomal abnormality and presents various deviations in areas such as mental and motor levels. The presence of extra information corresponding in whole or in part to chromosome 21 affects the development of children with trisomy 21, and abnormal gene expression leads to changes in brain function. The overall prevalence of the syndrome is one (1) to two (2) per thousand (1,000) live births, although the prevalence may have variability among racial or ethnic groups. The purpose of this research is to highlight the deviations in the balance ability, the strength of the upper limbs, and to what extent they affect the quality of life of children and adolescents with trisomy 21. Methods: Eighteen (18) children and adolescents with trisomy 21 participated in the research, with three (3) being excluded due to exclusion criteria. Fifteen (15) children and adolescents with trisomy 21 were finally included, of which four (4) were boys and eleven (11) were girls.

23 August 2024 in International journal of health sciences
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DKDimitra Katsantoni
Dimitra Katsantoni
CAChalkia Anna
Chalkia Anna
Georgios TsigarasGeorgios Tsigaras
Georgios Tsigaras
TBThomas Besios
Thomas Besios
KLKlonos Lefteris
Klonos Lefteris
Introduction: The brain is a system with multidimensional organization and architecture and requires a continuous blood supply to function normally. If blood flow is interrupted for more than a few seconds, the brain is deprived of blood and oxygen, causing death in nerve cells in the affected area. The stroke in children after birth appears even more rarely than in adults. Methods: For the study, 20 children with hemiplegic cerebral palsy (14 boys and 6 girls) participated (mean age 10,9 years), from the “General Hospital Hippocratio” of Thessaloniki, according to the inclusion criteria. The strength of the upper extremity was measured using the Jamar dynamometer. To assess the balance, the Pediatric Balance Scale (PBS) Affected and contralateral hands results were analyzed and compared with norms for age and sex and related to the affected balance. Results: It was found that the strength of the non-affected upper extremities was also reduced according to the data of the normal children and the balance was also affected because of the stroke. Discussion: Physiotherapy programs may include exercises that emphasize the non-affected upper extremities, more similar research must be done on a bigger population.

8 August 2024 in International journal of health sciences
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Georgios TsigarasGeorgios Tsigaras
Georgios Tsigaras
VEVargiami Eftymia
Vargiami Eftymia
Stella V. StabouliStella V. Stabouli
Stella V. Stabouli
HAHristara-Papadopoulou Alexandra
Hristara-Papadopoulou Alexandra
MMMaria Milioudi
Maria Milioudi
DZDimitrios I Zafeiriou
Dimitrios I Zafeiriou
Neurofibromatosis 1 (NF1) is a rare disease with worldwide impact. It is also known as von Recklinghausen disease and is an autosomal dominant condition caused by mutations of the NF1 gene, which is located at chromosome 17q11.2. NF1 is believed to be completely penetrant, but substantial variability in the expression of features occurs. Diagnosis of NF1 is based on established clinical criteria. The presentation of many of the clinical features is age-dependent. The average life expectancy of patients with NF1 is probably reduced by 10–15 years, and malignancy is the most common cause of death and there is no treatment found yet for NF1. The prevalence of clinically diagnosed NF1 ranges from 1/2,000 to 1/5,000 in most population-based studies. A wide variety of NF1 mutations has been found in patients with NF1, but no frequently recurring mutation has been identified. Most studies have not found an obvious relation between particular NF1 mutations and the resulting clinical manifestations. The variability of the NF1 phenotype, even in individuals with the same NF1 gene mutation, suggests that other factors are involved in determining the clinical manifestations, but the nature of these factors has not yet been determined.

8 September 2024 in International journal of health sciences
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Georgios TsigarasGeorgios Tsigaras
Georgios Tsigaras
AXAlexandra Xristara-Papadopoulou
Alexandra Xristara-Papadopoulou
AGAthina Georgiadou
Athina Georgiadou
ACAnna Chalkia
Anna Chalkia
EVEfthymia Vargiami
Efthymia Vargiami
KIKallistratos A. Ilias
Kallistratos A. Ilias
Purpose: The purpose of this study is to explore the importance of implementing a customized motor sensory physiotherapy program by recording data about the total days spent and weight gain of preterm infants in Neonatal Intensive Care Unit. Methods: Randomized clinical trial of a sample of thirty (30) preterm infants split in two 15-member groups, one intervention group and one control group. An adapted program of motor sensory physiotherapy techniques, while in NICU, was implemented to the intervention group while nothing was implemented to the control group. Both groups met the same entry criteria. The same protocol of motor sensory physiotherapy was applied in the intervention group during the whole period of the study. Results: Data show that customized motor sensory physiotherapy while in NICU improves weight gain and reduces total days of stay. Discussion: Even though adapted motor sensory physiotherapy intervention has a positive impact on the development and outcome of preterm infants in NICU, more research is required on the physiotherapy techniques by studying a larger sample size in NICU.

22 September 2026 in Pediatric Reports
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CPChristina Pliatsika
Christina Pliatsika
Olympia VasileiadouOlympia Vasileiadou
Olympia Vasileiadou
KAKonstantina Avgerinou
Konstantina Avgerinou
NLNIKI LAZI
NIKI LAZI
Pantelis PergantisPantelis Pergantis
Pantelis Pergantis
Athanasios S. DrigasAthanasios S. Drigas
Athanasios S. Drigas
Background/Objectives: Interoception-based interventions aim to help individuals recognize and respond to internal bodily signals. Their contribution to executive functioning and behavioral regulation remains unclear. This scoping review mapped interventions and reported outcomes in children, adolescents, and young adults. Methods: PubMed, Scopus, and Web of Science were searched for English-language studies published between 2015 and 3 May 2026. The review followed Joanna Briggs Institute guidance and PRISMA-ScR reporting recommendations. Two reviewers independently screened records and extracted data. Findings were synthesized narratively; no formal critical appraisal was undertaken. Results: Nine studies included participants aged 4–23 years across clinical and nonclinical populations. Approaches included structured interoception curricula, acceptance-based exposure, and programs combining bodily awareness with other therapeutic components. Three studies assessed executive functioning using the Behavior Rating Inventory of Executive Function–Second Edition. Reported gains mainly concerned emotional and behavioral regulation, although improvements in some rated cognitive domains were also described. These findings did not establish improvements on performance-based executive function tasks. Other reported changes concerned anxiety, pain, eating, and social functioning. Findings were not uniformly positive: physiological outcomes were mixed, and one study reported increased worry about bodily sensations. Small samples, limited controlled comparisons, heterogeneous measures, and scarce follow-up data restricted interpretation. Conclusions: The literature reports preliminary improvements in regulation and selected behavioral outcomes but does not establish intervention effectiveness or the specific contribution of interoception. Controlled studies should assess both everyday regulation and executive task performance, isolate intervention components, and examine whether benefits persist.

22 July 2025 in International journal of health & medical sciences
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ACAnna Chalkia
Anna Chalkia
Georgios TsigarasGeorgios Tsigaras
Georgios Tsigaras
OPOnoufrios Poimenidis
Onoufrios Poimenidis
NIKOLAOS GKIOURTZISNIKOLAOS GKIOURTZIS
NIKOLAOS GKIOURTZIS
DVDiogenis Vasiliadis
Diogenis Vasiliadis
IKIlias Kallistratos
Ilias Kallistratos
This is a literature review covering the intricate and two-way association between gait disorders and executive functioning deficits in individuals with neurological disorders. The review begins by defining executive functions, followed by a discussion of its fundamental components (inhibition, working memory, cognitive flexibility), and finally, the neural foundation of EF is outlined, focusing on the frontal lobes and related brain networks. A typology of neurological gait disorders (e.g., Parkinsonian, hemiplegic, ataxic) is then described, which is then correlated with their respective etiologies. The cognitive-motor interference model of gait-executive functions interaction and the shared neural resource theories are explored as frameworks explaining the phenomenon, and the dual-task paradigm as a methodological instrument is considered specifically. In the review, the authors examined how this interaction manifests in neurological diseases, including Parkinson's, stroke, and multiple sclerosis, and noted the peculiarities and mechanisms in each instance. Lastly, the clinical implications of this interaction on everyday functioning, risk of falls, and quality of life are addressed, along with what they mean regarding rehabilitation approaches, with a particular focus on integrated motor-cognitive interventions, including dual-task training and novel technologies (e.g., exergaming, virtual reality).