- MeSH
- Electrooculography MeSH
- Humans MeSH
- Nystagmus, Pathologic MeSH
- Visual Perception MeSH
- Check Tag
- Humans MeSH
Duplexní transkraniální sonografie je neinvazivní vyšetřovací metoda umožňující přímou vizualizaci základních segmentů tepen Willisova okruhu spolu s úhlovou korekcí při dopplerometrickém vyšetření, které dává přesnější informaci o skutečných průtokových rychlostech. Vyšetřili jsme celkem 435 osob s jiným než cerebrovaskulárním onemocněním nebo zdravých, ve věku od 11 do 90 let. Měřili jsme maximální průtokovou rychlost (peak systolic velocity - PSV), rychlost na konci diastoly (end diastolic velocity - EDV) a rezistenční index (RI) v těchto tepnách: horizontálni Ml úsek a. cerebri media (ACM), prekomunikující AI úsek a. cerebri anterior (ACA), prekomunikující PÍ úsek a. cerebri posterior (ACP), v intrakraniálních úsecích a. vertebralis (AV) a a. basilaris (AB). Zjistili jsme průměrné úhlově korigované hodnoty PSV, EDV a RI s hodnotami směrodatných odchylek (SD) pro věkové skupiny: do 20 let, 21-30 let, 31-40 let, 41-50 let, 51-60 let, 61-70 let, 71-90 let. Pozorovali jsme postupný pokles průtokových rychlostí a vzestup rezistence v závislosti na věku a vyšší PSV v některých tepnách u žen před menopauzou. Zjištění průměrných průtokových hodnot v mozkových tepnách u zdravé populace je nezbytné pro další využití transkraniální duplexní sonografie u cerebrovaskulárních onemocnění.
Duplex transcranial sonography is a non-invasivp pvamination method which makes possible direct visualization of basic segments of arteries of the circle of Willis along with angular correction during dopplerometric examinations which provides more accurate information on actual flow rates. The authors examined a total of 435 subjects with other than cerebrovascular diseases or healthy subjects aged 11 to 90 years. The authors assessed the maximum flow rate (peak systolic velocity - PSV), the velocity at the end of the diastole (end diastolic velocity - EDV) and the resistance index (RI) in the following arteries: horizontal Ml section of the a. cerebri media (ACM), precommunicating Al section of the a. cerebri anterior (ACA), precommunicating section PI of the a. cerebri posterior (ACP) in intracranial portions of the vertebral artery (AV) and a. basilaris (AB). The authors found mean angular corrected values of PSV, EDV and RI, incl. values of standard deviations (SD) for the following age groups: under 20 years, 21-30 years, 31-40 years, 41-50 years, 51-60 years, 61-70 years, 71-90 years. They observed a gradual decline of flow rates and increased resistance in relation to age and higher PSV in some arteries in women before the menopause. Assessment of mean flow rates in the cerebral arteries in the healthy population is essential for the further application of transcranial duplex sonography in cerebrovascular diseases.
- MeSH
- Cerebral Arteries ultrasonography MeSH
- Child MeSH
- Adult MeSH
- Middle Aged MeSH
- Humans MeSH
- Blood Flow Velocity MeSH
- Aged MeSH
- Ultrasonography, Doppler, Transcranial methods MeSH
- Check Tag
- Child MeSH
- Adult MeSH
- Middle Aged MeSH
- Humans MeSH
- Male MeSH
- Aged MeSH
- Female MeSH
- Publication type
- Comparative Study MeSH
Cíl studie: Cílem naší studie bylo porovnat neinvazivní monitoraci pomocí esCCO (monitor Vismo od firmy NihonKohden) s monitorací LiDCOrapid, na našem pracovišti rutinně používanou u rizikových pacientů podstupujících břišní operaci. Typ studie: Observační. Typ pracoviště: Operační sály (všeobecná chirurgie) fakultní nemocnice. Materiál a metoda: Do studie byli zařazeni pacienti ASA III, u nichž byla plánována břišní operace delší než 90 minut. Srdeční výdej byl měřen metodami esCCO a LiDCOrapid zároveň. První měření bylo provedeno před úvodem do anestezie a poté každých 15 minut během operace. Poslední měření bylo zaznamenáno po extubaci pacienta. Výsledky obou technik byly porovnány metodami Bland-Altman a polárním grafem ke zjištění shody v srdečním výdeji a jeho změnách. Výsledky: Celkem bylo shromážděno 141 párových měření od deseti pacientů. Bland-Altmanova analýza korigovaná pro opakovaná měření ukázala chybu (bias) + 1,2 l/min, hranice shody (limits of agreement) ? 2,6 l/min a procentuální chybu 57 %. Míra shody ve směru změny mezi dvěma po sobě jdoucími měřeními mezi monitorem esCCO a tomu odpovídajícím měřením pomocí LiDCOrapid byla 80 %. Metodikou polárního grafu byla určena úhlová chyba (angular bias) +11° s radiálními limity shody (limits of agreement) -40° a +62°. Závěr: Monitorace hemodynamiky pomocí esCCO přináší výsledky odlišné od těch naměřených metodou LiDCOrapid. V současné době neinvazivní monitorace pomocí esCCO nepředstavuje plnohodnotnou náhradu pro monitoraci pomocí LiDCOrapid.
Objective: The aim of the study was to compare the esCCO Vismo (Nihon Kohden, Japan) monitor to the routinely used LiDCOrapid (LiDCO Group, Great Britain) monitor in patients undergoing abdominal surgery. Design: Observational study. Setting: General surgery operating theatres in a University Hospital. Materials and methods: ASA III patients scheduled for elective major abdominal surgery with expected operation duration over 90 minutes were included in the study. Cardiac output measurements by esCCO and LiDCOrapid were recorded before induction of anaesthesia, every 15 min throughout the surgery and after extubation. The agreement and trending ability of the two methods were tested with the Bland-Altman analysis and polar plot, respectively. Results: A total of 141 paired readings from 10 patients were collected. The Bland-Altman analysis corrected for repeated measures showed a bias of +1.2 l/min, limits of agreement ?2.6 l/min and percentage error of 57 %. The direction of change between consecutive esCCO measurements and the corresponding LiDCOrapid measurements showed a concordance rate of 80 %. In the polar plot, the angular bias was +11° with radial limits of agreement from -40° to +62°. Conclusion: Hemodynamic monitoring with esCCO yields cardiac output values different from those measured by LiDCOrapid. esCCO cannot be currently recommended as a reliable surrogate for LiDCOrapid.
- Keywords
- esCCO, LiDCO,
- MeSH
- Pulse Wave Analysis instrumentation MeSH
- Diagnostic Techniques, Cardiovascular MeSH
- Hemodynamics MeSH
- Middle Aged MeSH
- Humans MeSH
- Cardiac Output MeSH
- Monitoring, Physiologic * methods MeSH
- Perioperative Care * methods MeSH
- Observational Studies as Topic MeSH
- Aged MeSH
- Check Tag
- Middle Aged MeSH
- Humans MeSH
- Aged MeSH
METHODS: A total of 181 young male athletes were recruited and categorized according to sport specialization (soccer or athletics) and age categories (U15, U17 or U19). Isokinetic strength was measured as peak muscle torque (PT), normalized to body mass, for the knee extensors (PTKE) and knee flexors (PTKF) during concentric muscle contraction at three angular velocities (60°s-1. 180°s-1. 300°s-1). Vertical jump performance was measured during a countermovement jump with arms fixed (CMJ) and a squat jump (SJ). RESULTS: Significantly higher values of bilateral asymmetry (BA) of PTKF for angular velocity 60°s-1 and 180°s-1 were found in the athletics group compared to the soccer group in the U17 category (14.40% to 16.02% vs 9.07% to 10.45%). Significantly higher values of BA for angular velocity 300°s-1 for both PTKE and PTKF were found in the U15 compared to U19 category. Significantly higher values of H:Q ratio at all angular velocity except for the non-dominant leg in the highest angular velocity in soccer compared to the athletes in the U17 category were found. Soccer players exhibited significantly higher values of PTKF compared to those in athletics and jump height in the U17 category. CONCLUSION: Soccer players displayed increased isokinetic strength and more balanced BA compared to the athletics group. Physiotherapists and strength coaches should focus on younger age groups, especially U15, due to the higher incidence of BA and lower relative strength regardless of specialization.
- MeSH
- Soccer * physiology MeSH
- Muscle, Skeletal physiology MeSH
- Humans MeSH
- Adolescent MeSH
- Plyometric Exercise MeSH
- Specialization * MeSH
- Athletic Performance * physiology MeSH
- Muscle Strength * physiology MeSH
- Torque MeSH
- Age Factors MeSH
- Check Tag
- Humans MeSH
- Adolescent MeSH
- Male MeSH
- Publication type
- Journal Article MeSH
Impact force and maximum velocity are important indicators of kick efficiency. Therefore, this systematic review compared the front kick (FK) and roundhouse kick (RK), including their impact force, maximum velocity, angular velocity, and execution time, considering various target types and experience levels. Following PRISMA guidelines, the Web of Science, SportDiscus, and PubMed were systematically searched for articles published from January 1982 to May 2022. Normalized kicking values were compared using one-way ANOVA. Eighteen articles included FKs (sample: 113 elite men, 109 sub-elite men, and 46 novices), and twenty-five articles included RKs (sample: 238 elite men, 143 sub-elite men, and 27 novice men). The results indicate that the impact force of the FK were 47% (p < 0.01), 92% (p < 0.01), and 120% (p < 0.01) higher than those of the RK across novice, sub-elite, and elite groups, respectively. Moreover, the maximum foot velocity of the RK was 44% (p < 0.01) and 48% (p < 0.01) higher than that of the FK for the sub-elite and elite groups, respectively. Furthermore, the elite group had 65% (p < 0.01) higher knee extension angular velocity with the RK than with the FK and 138% (p < 0.01) higher hip extension angular velocity with the FK than with the RK. In summary, the findings suggest that the FK is more effective in generating forceful kicks, while the RK has the potential for rapid execution.
- Publication type
- Journal Article MeSH
- Review MeSH
This study investigated the whole-body coordination patterning in successful and faulty spikes using self-organising map-based cluster analysis. Ten young, elite volleyball players (aged 15.5 ± 0.7 years) performed 60 volleyball spikes in a real-game environment. Adopting the cluster analysis, based on a self-organising map, whole-body coordination patterning was explored between successful and faulty spikes of individual players. The self-organising maps (SOMs) portrayed whole body, lower and upper limb coordination dissimilarities during the jump phase and the ball impact phases between the successful and faulty spikes. The cluster analysis illustrated that the whole body, upper limb and lower limb coordination patterning of each individual's successful spikes were similar to their faulty spikes. Range of motion patterning also demonstrated no differences in kinematics between spike outcomes. Further, the upper limb angular velocity patterning of the players' successful/faulty spikes were similar. The SPM analysis portrayed significant differences between the normalized upper limb angular velocities from 35% to 45% and from 76% to 100% of the spike movement. Although the lower limb angular velocities are vital for achieving higher jumps in volleyball spikes, the results of this study portrayed that the upper limb angular velocities distinguish the differences between successful and faulty spikes among the attackers. This confirms the fact that volleyball coaches should shift their focus toward the upper limb velocity and coordination training for higher success rates in spiking for volleyball attackers.
- MeSH
- Biomechanical Phenomena MeSH
- Lower Extremity MeSH
- Humans MeSH
- Adolescent MeSH
- Movement MeSH
- Range of Motion, Articular MeSH
- Cluster Analysis MeSH
- Athletic Performance * MeSH
- Volleyball * MeSH
- Check Tag
- Humans MeSH
- Adolescent MeSH
- Publication type
- Journal Article MeSH
