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"name": "Diagnostic",
"headline": "Diagnostic sur Complexe répresseur Polycomb-1",
"description": "Comment diagnostiquer une dysfonction du PRC1 ?\nQuels tests sont utilisés pour évaluer le PRC1 ?\nLe diagnostic nécessite-t-il une biopsie ?\nQuels marqueurs sont associés au PRC1 ?\nLe diagnostic est-il basé sur des symptômes cliniques ?",
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"description": "Quels symptômes indiquent une anomalie du PRC1 ?\nLe PRC1 est-il lié à des cancers spécifiques ?\nLes troubles neurologiques sont-ils liés au PRC1 ?\nLe PRC1 affecte-t-il le métabolisme ?\nY a-t-il des symptômes généraux associés au PRC1 ?",
"url": "https://questionsmedicales.fr/mesh/D063150?mesh_terms=Hamstring+Muscles&page=2#section-symptômes"
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"description": "Peut-on prévenir les anomalies liées au PRC1 ?\nY a-t-il des tests de dépistage pour le PRC1 ?\nLes antécédents familiaux influencent-ils le risque ?\nDes conseils génétiques sont-ils disponibles ?\nL'alimentation joue-t-elle un rôle dans la prévention ?",
"url": "https://questionsmedicales.fr/mesh/D063150?mesh_terms=Hamstring+Muscles&page=2#section-prévention"
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"name": "Traitements",
"headline": "Traitements sur Complexe répresseur Polycomb-1",
"description": "Quels traitements ciblent le PRC1 ?\nLa chimiothérapie est-elle efficace contre les anomalies du PRC1 ?\nDes traitements expérimentaux existent-ils pour le PRC1 ?\nLe PRC1 peut-il être ciblé par des médicaments spécifiques ?\nLes thérapies combinées sont-elles efficaces pour le PRC1 ?",
"url": "https://questionsmedicales.fr/mesh/D063150?mesh_terms=Hamstring+Muscles&page=2#section-traitements"
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"name": "Complications",
"headline": "Complications sur Complexe répresseur Polycomb-1",
"description": "Quelles complications peuvent survenir avec le PRC1 ?\nLe PRC1 est-il lié à des maladies auto-immunes ?\nLes complications sont-elles réversibles ?\nLe PRC1 affecte-t-il la qualité de vie ?\nY a-t-il des complications neurologiques associées ?",
"url": "https://questionsmedicales.fr/mesh/D063150?mesh_terms=Hamstring+Muscles&page=2#section-complications"
},
{
"@type": "MedicalWebPage",
"name": "Facteurs de risque",
"headline": "Facteurs de risque sur Complexe répresseur Polycomb-1",
"description": "Quels sont les facteurs de risque pour le PRC1 ?\nL'âge est-il un facteur de risque pour le PRC1 ?\nLes facteurs environnementaux influencent-ils le PRC1 ?\nLe sexe joue-t-il un rôle dans le risque de PRC1 ?\nLe mode de vie influence-t-il le risque de PRC1 ?",
"url": "https://questionsmedicales.fr/mesh/D063150?mesh_terms=Hamstring+Muscles&page=2#section-facteurs de risque"
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{
"@type": "Question",
"name": "Comment diagnostiquer une dysfonction du PRC1 ?",
"position": 1,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le diagnostic repose sur des analyses génétiques et des études d'expression génique."
}
},
{
"@type": "Question",
"name": "Quels tests sont utilisés pour évaluer le PRC1 ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des tests de séquençage et des analyses de chromatine sont couramment utilisés."
}
},
{
"@type": "Question",
"name": "Le diagnostic nécessite-t-il une biopsie ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une biopsie peut être nécessaire pour analyser les tissus affectés par le PRC1."
}
},
{
"@type": "Question",
"name": "Quels marqueurs sont associés au PRC1 ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des marqueurs épigénétiques comme les modifications des histones sont souvent analysés."
}
},
{
"@type": "Question",
"name": "Le diagnostic est-il basé sur des symptômes cliniques ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes cliniques peuvent orienter le diagnostic, mais des tests spécifiques sont nécessaires."
}
},
{
"@type": "Question",
"name": "Quels symptômes indiquent une anomalie du PRC1 ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des anomalies de développement et des troubles de la différenciation cellulaire peuvent survenir."
}
},
{
"@type": "Question",
"name": "Le PRC1 est-il lié à des cancers spécifiques ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des mutations dans le PRC1 sont associées à divers types de cancers, notamment le cancer du sein."
}
},
{
"@type": "Question",
"name": "Les troubles neurologiques sont-ils liés au PRC1 ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines études suggèrent un lien entre le PRC1 et des troubles neurologiques, mais les recherches sont en cours."
}
},
{
"@type": "Question",
"name": "Le PRC1 affecte-t-il le métabolisme ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des recherches indiquent que le PRC1 peut influencer le métabolisme cellulaire et énergétique."
}
},
{
"@type": "Question",
"name": "Y a-t-il des symptômes généraux associés au PRC1 ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des symptômes comme la fatigue et des anomalies de croissance peuvent être observés."
}
},
{
"@type": "Question",
"name": "Peut-on prévenir les anomalies liées au PRC1 ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "La prévention est difficile, mais un mode de vie sain peut réduire certains risques."
}
},
{
"@type": "Question",
"name": "Y a-t-il des tests de dépistage pour le PRC1 ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Actuellement, il n'existe pas de tests de dépistage standardisés pour les anomalies du PRC1."
}
},
{
"@type": "Question",
"name": "Les antécédents familiaux influencent-ils le risque ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des antécédents familiaux de cancers peuvent augmenter le risque d'anomalies du PRC1."
}
},
{
"@type": "Question",
"name": "Des conseils génétiques sont-ils disponibles ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des conseils génétiques peuvent aider à évaluer le risque et à discuter des options de prévention."
}
},
{
"@type": "Question",
"name": "L'alimentation joue-t-elle un rôle dans la prévention ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une alimentation équilibrée peut contribuer à la santé cellulaire, mais ne prévient pas spécifiquement les anomalies du PRC1."
}
},
{
"@type": "Question",
"name": "Quels traitements ciblent le PRC1 ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des inhibiteurs de la méthylation des histones et des thérapies géniques sont explorés."
}
},
{
"@type": "Question",
"name": "La chimiothérapie est-elle efficace contre les anomalies du PRC1 ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "La chimiothérapie peut être utilisée, mais son efficacité dépend du type de cancer associé."
}
},
{
"@type": "Question",
"name": "Des traitements expérimentaux existent-ils pour le PRC1 ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des traitements expérimentaux sont en cours d'évaluation dans des essais cliniques."
}
},
{
"@type": "Question",
"name": "Le PRC1 peut-il être ciblé par des médicaments spécifiques ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des recherches sont en cours pour développer des médicaments ciblant spécifiquement le PRC1."
}
},
{
"@type": "Question",
"name": "Les thérapies combinées sont-elles efficaces pour le PRC1 ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les thérapies combinées peuvent améliorer l'efficacité des traitements contre les cancers liés au PRC1."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent survenir avec le PRC1 ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des complications incluent des cancers avancés et des troubles de développement sévères."
}
},
{
"@type": "Question",
"name": "Le PRC1 est-il lié à des maladies auto-immunes ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des études suggèrent un lien potentiel entre le PRC1 et certaines maladies auto-immunes."
}
},
{
"@type": "Question",
"name": "Les complications sont-elles réversibles ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines complications peuvent être gérées, mais d'autres peuvent être irréversibles."
}
},
{
"@type": "Question",
"name": "Le PRC1 affecte-t-il la qualité de vie ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les anomalies du PRC1 peuvent significativement affecter la qualité de vie des patients."
}
},
{
"@type": "Question",
"name": "Y a-t-il des complications neurologiques associées ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines anomalies du PRC1 peuvent entraîner des complications neurologiques, comme des troubles cognitifs."
}
},
{
"@type": "Question",
"name": "Quels sont les facteurs de risque pour le PRC1 ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les facteurs incluent des mutations génétiques, des antécédents familiaux et des expositions environnementales."
}
},
{
"@type": "Question",
"name": "L'âge est-il un facteur de risque pour le PRC1 ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certains types de cancers liés au PRC1 sont plus fréquents chez les personnes âgées."
}
},
{
"@type": "Question",
"name": "Les facteurs environnementaux influencent-ils le PRC1 ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des expositions à des agents cancérigènes peuvent augmenter le risque d'anomalies du PRC1."
}
},
{
"@type": "Question",
"name": "Le sexe joue-t-il un rôle dans le risque de PRC1 ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certains cancers liés au PRC1 montrent des différences de prévalence entre les sexes."
}
},
{
"@type": "Question",
"name": "Le mode de vie influence-t-il le risque de PRC1 ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Un mode de vie malsain, comme le tabagisme, peut augmenter le risque d'anomalies du PRC1."
}
}
]
}
]
}
Proximal hamstring tendon avulsions (PHAs) may be treated nonoperatively or operatively. Little is known about the result of the injury, and its treatment, on the quality and function of the hamstring...
In a cross-sectional cohort study, 48 patients treated for PHA, either operatively or nonoperatively, were re-examined 2-11 years post-treatment. We measured muscle strength with isokinetic strength t...
The total hamstring muscle volume was on average reduced by 9% (SD ± 11%, p < 0.001) compared to that of the uninjured leg. Fatty infiltration was significantly more severe in the injured hamstrings t...
PHA injuries result in fatty infiltration and muscle atrophy and the muscle quality impairment correlates with residual muscle weakness....
Knee extension and hip flexion range of motion (ROM) and functional performance of the hamstrings are of great importance in many sports. The aim of this study was to investigate if static stretching ...
Previous studies have examined the mode specificity of eccentric and concentric isokinetic training, but have reported conflicting results. Few studies have reported that eccentric and concentric isok...
A total of 30 participants were randomly divided into eccentric and concentric groups....
Two groups pre-test-post-test experimental design was used. In the eccentric and concentric groups, eccentric and concentric isokinetic training of hamstring muscle was performed respectively, at an a...
In the eccentric group, a significant difference (...
Both eccentric and concentric isokinetic training of the hamstring for 6 weeks increased PT...
A previous study revealed that resistance exercise with eccentric contraction and a wide range of motion (ROM) can acutely decrease muscle stiffness of a specific muscle. To explore further approaches...
Thirteen healthy young male participants performed three sessions of eccentric-only exercises that comprised stiff-leg deadlift with different muscle lengths and exercise durations (duration per repet...
The shear modulus of the semimembranosus was significantly lower at 3 min post-exercise (129.8 ± 22.7 kPa) than at pre-exercise (140.5 ± 19.1 kPa, p < 0.01) in LL, but not in SS or LS. No significant ...
The combination of long muscle lengths and a long duration during eccentric-only resistance exercise is important to immediately decrease the stiffness (shear modulus) of a specific muscle....
Previous studies have suggested that a reduced length of the biceps femoris long head (BF...
To investigate the between-limb asymmetry of BF...
Male amateur athletes were evaluated using ultrasound scans within five days following an HSI. The BF...
Eighteen injured athletes participated in this study. There was no significant difference (p = 0.27) in the length of BF...
The architecture characteristics of injured and uninjured muscles is not consistent among athletes with HSI. Therefore, rehabilitation programs focused on fascicle lengthening should be evaluated on a...
The aim of this study was to evaluate the effect of a Nordic hamstring exercise intervention on biceps femoris long head, semitendinosus, and semimembranosus muscle's activity and relative contributio...
Muscle architecture is associated with motor performance and muscle injury. While muscle architecture and knee-flexor eccentric strength change with growth, the influence of anthropometric measures on...
Sixty male footballers (16.6 [1.05] y) from the U16, U17, and U19 teams of an elite soccer club were included in this study. Fascicle length, pennation angle, and muscle thickness of the biceps femori...
Variance within BFlh and semimembranosus muscle thickness (r < .61), semimembranosus pennation angle (r < .58), and knee-flexor eccentric strength (r = .50) were highly related to body mass. We observ...
In conclusion, weak correlations between muscle architecture and anthropometric measurements suggest that other factors (ie, genetics, training regimen) influence muscle architecture. The moderate eff...
To assess the intra-rater reliability of static wide field of view ultrasound to quantify the architectural characteristics of the hamstring muscles....
Twenty amateur male athletes were recruited. Their left hamstring muscles were assessed using static wide field of view ultrasound on two separate occasions. Static ultrasound images were acquired by ...
Both muscle (intraclass correlation coefficient = 0.99; standard error of measurement = 4.3 to 6.6mm) and fascicle (intraclass correlation coefficient = 0.92 to 0.98; standard error measurement = 1.1 ...
The architectural characteristics of the hamstring muscles of male amateur athletes can be reliably quantified using static wide field of view ultrasound....
Hamstring muscle strains are one of the most common injuries in sports practice, for both men and women. However, sex disparities in the rate of muscle injuries have been observed. As these muscular i...
The shear wave speed (SWS) of resting hamstring muscles was measured in 12 men and 12 women in different hip and knee positions (hip extended with knee flexed, hip flexed with knee extended, both join...
Combining all the positions, the SWS of the semitendinosus was higher in men than in women (2.96 vs. 2.71 m.s...
In conclusion, a sex difference was only observed in the resting semitendinosus rigidity. Independently of sex, the increase in resting hamstring muscles SWS with stretch was muscle specific....
The validity and reliability of 3-D ultrasound (US) in estimation of muscle and tendon volume was assessed in a very limited number of muscles that can be easily immersed. The objective of the present...
Three-dimensional US acquisitions were performed for 13 participants in two distinct sessions on separate days, in addition to one session dedicated to magnetic resonance imaging (MRI). Volumes of ST,...
The bias and the 95% confidence intervals of 3-D US compared with MRI ranged from -1.9 mL (-0.8%) to 1.2 mL (1.0%) for muscle volume and from 0.01 mL (0.2%) to -0.03 mL (-2.6%) for tendon volume. For ...
Three-dimensional US can provide a valid and reliable inter-day measurement of hamstrings and GR for both muscle and tendon volumes. In the future, this technique could be used as an outcome for stren...