Titre : Os spongieux

Os spongieux : Questions médicales fréquentes

Termes MeSH sélectionnés :

Muscle Contraction
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"Douleurs osseuses, fractures fréquentes et perte de hauteur peuvent indiquer une maladie." } }, { "@type": "Question", "name": "Quand faire une densitométrie osseuse ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Elle est recommandée pour les personnes à risque d'ostéoporose, généralement après 50 ans." } }, { "@type": "Question", "name": "Quels symptômes nécessitent une évaluation osseuse ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Des douleurs persistantes ou des fractures sans traumatisme doivent être évaluées." } }, { "@type": "Question", "name": "Quels sont les symptômes d'une fracture osseuse ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Douleur intense, gonflement et incapacité à utiliser le membre affecté sont fréquents." } }, { "@type": "Question", "name": "Comment reconnaître l'ostéoporose ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "L'ostéoporose est souvent asymptomatique jusqu'à une fracture, mais peut causer des douleurs." } }, { "@type": "Question", "name": "Quels signes de faiblesse osseuse ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Perte de hauteur, courbure de la colonne vertébrale et fractures fréquentes sont des signes." } }, { "@type": "Question", "name": "Y a-t-il des symptômes associés à l'ostéomalacie ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Douleurs osseuses, faiblesse musculaire et déformations osseuses peuvent survenir." } }, { "@type": "Question", "name": "Quels symptômes d'une infection osseuse ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Fièvre, douleur localisée et rougeur autour de l'os peuvent indiquer une infection." } }, { "@type": "Question", "name": "Comment prévenir l'ostéoporose ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation équilibrée, l'exercice régulier et l'arrêt du tabac sont essentiels." } }, { "@type": "Question", "name": "Quel rôle de l'exercice pour les os ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "L'exercice renforce les os et améliore l'équilibre, réduisant le risque de chutes." } }, { "@type": "Question", "name": "Pourquoi éviter le tabac pour les os ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Le tabagisme réduit la densité osseuse et augmente le risque de fractures." } }, { "@type": "Question", "name": "Comment la vitamine D aide-t-elle les os ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "La vitamine D favorise l'absorption du calcium, essentielle pour la santé osseuse." } }, { "@type": "Question", "name": "Quels aliments sont bons pour les os ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Les produits laitiers, les légumes verts et les poissons gras sont bénéfiques pour les os." } }, { "@type": "Question", "name": "Quels traitements pour l'ostéoporose ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Les bisphosphonates, la vitamine D et l'exercice sont des traitements courants." } }, { "@type": "Question", "name": "Comment traiter une fracture osseuse ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Le traitement peut inclure immobilisation, chirurgie ou réhabilitation selon la gravité." } }, { "@type": "Question", "name": "Quels médicaments renforcent les os ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Les médicaments comme le raloxifène et les bisphosphonates aident à renforcer les os." } }, { "@type": "Question", "name": "Quel rôle de la physiothérapie ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "La physiothérapie aide à renforcer les muscles et améliorer la mobilité après une fracture." } }, { "@type": "Question", "name": "Comment la nutrition aide-t-elle les os ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation riche en calcium et vitamine D est essentielle pour la santé osseuse." } }, { "@type": "Question", "name": "Quelles complications des fractures ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Les complications incluent l'infection, la non-union osseuse et la douleur chronique." } }, { "@type": "Question", "name": "Quels risques d'ostéoporose non traitée ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "L'ostéoporose non traitée augmente le risque de fractures graves et de déformations." } }, { "@type": "Question", "name": "Comment l'ostéomalacie complique-t-elle la santé ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Elle peut entraîner des déformations osseuses et des douleurs chroniques si non traitée." } }, { "@type": "Question", "name": "Quelles complications des infections osseuses ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Les infections osseuses peuvent causer des douleurs persistantes et des dommages osseux." } }, { "@type": "Question", "name": "Quels effets des médicaments sur les os ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Certains médicaments peuvent entraîner une perte osseuse ou des effets secondaires indésirables." } }, { "@type": "Question", "name": "Quels facteurs augmentent le risque d'ostéoporose ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "L'âge, le sexe féminin, l'hérédité et un mode de vie sédentaire augmentent le risque." } }, { "@type": "Question", "name": "Comment l'alimentation influence-t-elle les os ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation pauvre en calcium et vitamine D augmente le risque de maladies osseuses." } }, { "@type": "Question", "name": "Quel impact du mode de vie sur la santé osseuse ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Un mode de vie sédentaire et le tabagisme nuisent à la santé osseuse." } }, { "@type": "Question", "name": "Les antécédents familiaux influencent-ils les os ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des antécédents familiaux d'ostéoporose augmentent le risque personnel." } }, { "@type": "Question", "name": "Quel rôle du sexe dans la santé osseuse ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Les femmes, surtout après la ménopause, sont plus à risque d'ostéoporose que les hommes." } } ] } ] }

Sources (10000 au total)

Pain inhibition-the unintended benefit of electrically elicited muscle strengthening contractions.

Neuromuscular electrical stimulation (NMES) is effective in muscle strengthening after orthopedic injury particularly when muscle activation failure is present, but the associated pain can be a barrie... Healthy participants, 18-30 years of age experienced 3 conditions: 10 NMES contractions, 10 bursts of NxES on the patella, and 10 volitional contractions on the right knee. Pressure pain thresholds (P... Pain ratings were higher in the NxES condition compared to NMES (p = .000). No differences in PPTs prior to each condition were observed but PPTs were significantly higher in the right and left knees ... NxES and NMES produced higher PPTs in both knees but not in the finger, suggesting that the mechanisms responsible for the reduction in pain are located in the spinal cord and local tissues. Pain redu...

Less fatiguability in eccentric than concentric repetitive maximal muscle contractions.

Changes in elbow flexion torque and biceps brachii electromyogram (EMG) activity over 30 repetitive maximal voluntary concentric-only (CON-only), eccentric-only (ECC-only), and alternative concentric ... Fifteen healthy young men performed CON-only, ECC-only and CON-ECC in their maximal effort between 10° and 100° elbow flexion on an isokinetic dynamometer at an angular velocity of 30°/s with a 3-s re... The torque decreased (p < 0.01) from the first to 30th contraction in CON-only (- 49.5 ± 11.0%), ECC-only (- 32.2 ± 7.4%), and concentric (- 62.3 ± 8.7%) as well as eccentric phase (- 58.9 ± 9.3%) in ... These results suggest greater fatigue resistance in repetitive maximal eccentric than concentric contractions, but the fatigue assessed by MVC-ISO does not show it....

Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography.

This paper aimed to compare the involuntary stimulated neuromuscular response of thigh muscles in top-level karate athletes and recreational groups.... The study included 13 male karate athletes (KAs) and 14 non-athlete male individuals (NAs). Tensiomyographic (TMG) measurements were obtained from the rectus femoris (RF), vastus medialis (VM), vastus... Statistically significant differences were observed between KAs and NAs in knee extensor/flexor delay time (Td), contraction time (Tc), total contraction time (Tct), maximal radial displacement of the... The lower Tct values indicate an improved ability of top-level karateka to make fast contractions of the agonist muscles. KAs' higher RMTD values suggest on strength characteristics needed in breaking...

Effects of exercise induced muscle damage on cardiovascular responses to isometric muscle contractions and post-exercise circulatory occlusion.

The aim of the present study was to investigate whether exercise-induced muscle damage (EIMD) influences cardiovascular responses to isometric exercise and post-exercise circulatory occlusion (PECO). ... Eleven male and nine female participants performed unilateral isometric knee extension at 30% of maximal voluntary contraction (MVC) for 3-min. A thigh cuff was rapidly inflated to 250 mmHg for two mi... EIMD caused 21% decrease in MVC (baseline: 634.6 ± 229.3 N, 48 h: 504.0 ± 160 N), and a 17-fold increase in perceived soreness using a visual-analogue scale (0-100 mm; VAS... The MAP correlations with muscle soreness, RPE and Pain during contractions of damaged muscles suggests that higher afferent activity was associated with higher MAP responses to exercise....

Muscle Fiber Conduction Velocity During Electrically Stimulated Contraction at Various Joint Angles, During Joint Movements, and During Voluntary Contractions.

Muscle fiber conduction velocity (MFCV) can be affected by muscle fiber geometry at different joint angles and during joint movements. This study aimed to investigate MFCV during electrically evoked c...