Relationship between knee angle in squat test and defence or reception efficacy in amateur volleyball players

Introduction: Defending and receiving successfully in volleyball is necessary to produce good attacks. The most used technique of defence and reception is dig. It was found that performance of dig influences the performance of spike (Palao et al., 2006). Key points for the effectiveness of dig are anticipation, decision-making, and movement speed. However, it is legit to hypothesize that knee joint angle (KJA) in the starting position of the dig may have an influence on defence and reception efficacy. Therefore, we aimed to investigate the relationship between KJA during an overhead squat test and both defence efficacy (DE) and reception efficacy (RE) in amateur volleyball players. Methods: Fifteen amateur volleyball players were recruited (20.27\ub13.08 yrs, 76.60\ub19.27 kg, 184.53\ub16.63 cm). Players performed three trials of the NASM overhead squat test (Clark 2001) aimed to detect the minimum knee angle value just before losing inverting the normal lumbar lordosis. The KJA was assessed using Microsoft Kinect\u2122. After that, DE of each player was assessed in response to 15 test spikes performed by the same player, as well as RE was assessed in response to 15 test services performed by the same player (Palao et al., 2015). After checked for the normality of the distributions, Pearson correlation coefficient was calculated between KJA and both DE and RE. A p-value lower than 0.05 was considered statistically significant. Data are presented as means \ub1 SD. Results: The KJA in the squat test was 103.9\ub113.4 deg; DE was -41.3\ub122.9 % and RE was 46.6\ub120.9 %. Correlations between KJA and DE and KJA and RE were -0.7 (p=0.004) and -0.14 (P>0.05), respectively. Discussion: The significant inverse correlation between KJA and DE suggests that the players with knee angle lower just before losing the normal physiological lumbar curve had a better efficiency during the defence position. From a speculative point of view, the major depth reached the quality of movement in the squat test reflects a better technical performance the quality of movement in the defensive stance; generally, the squatting depth positively influences the lower-body jumping and postactivation potentation (Esformes & Bampouras 2013). Conversely, the non-significant correlation of KJA and RE was probably due to the more time from the service to the dig, allowing the receivers more time to prepare the reception. References: Palao JM, Santos JA, Urena A. (2006). J Hum Mov Stud 51(4), 221-238. Palao JM, Gim\ue9nez-Ibarra MI (2015). Cent Eur J Sport Sci Med 12(4), 25-34. Clark M. A. (2001). National Academy of Sports Medicine. Thousand Oaks, Ca. Esformes JI, Bampouras TM. (2013). J Strength Cond Res 27(11), 2997-3000

Relationship between knee angle in squat test and defence or reception efficacy in amateur volleyball players

Introduction: Defending and receiving successfully in volleyball is necessary to produce good attacks. The most used technique of defence and reception is dig. It was found that performance of dig influences the performance of spike (Palao et al., 2006). Key points for the effectiveness of dig are anticipation, decision-making, and movement speed. However, it is legit to hypothesize that knee joint angle (KJA) in the starting position of the dig may have an influence on defence and reception efficacy. Therefore, we aimed to investigate the relationship between KJA during an overhead squat test and both defence efficacy (DE) and reception efficacy (RE) in amateur volleyball players. Methods: Fifteen amateur volleyball players were recruited (20.27\ub13.08 yrs, 76.60\ub19.27 kg, 184.53\ub16.63 cm). Players performed three trials of the NASM overhead squat test (Clark 2001) aimed to detect the minimum knee angle value just before losing inverting the normal lumbar lordosis. The KJA was assessed using Microsoft Kinect\u2122. After that, DE of each player was assessed in response to 15 test spikes performed by the same player, as well as RE was assessed in response to 15 test services performed by the same player (Palao et al., 2015). After checked for the normality of the distributions, Pearson correlation coefficient was calculated between KJA and both DE and RE. A p-value lower than 0.05 was considered statistically significant. Data are presented as means \ub1 SD. Results: The KJA in the squat test was 103.9\ub113.4 deg; DE was -41.3\ub122.9 % and RE was 46.6\ub120.9 %. Correlations between KJA and DE and KJA and RE were -0.7 (p=0.004) and -0.14 (P>0.05), respectively. Discussion: The significant inverse correlation between KJA and DE suggests that the players with knee angle lower just before losing the normal physiological lumbar curve had a better efficiency during the defence position. From a speculative point of view, the major depth reached the quality of movement in the squat test reflects a better technical performance the quality of movement in the defensive stance; generally, the squatting depth positively influences the lower-body jumping and postactivation potentation (Esformes & Bampouras 2013). Conversely, the non-significant correlation of KJA and RE was probably due to the more time from the service to the dig, allowing the receivers more time to prepare the reception. References: Palao JM, Santos JA, Urena A. (2006). J Hum Mov Stud 51(4), 221-238. Palao JM, Gim\ue9nez-Ibarra MI (2015). Cent Eur J Sport Sci Med 12(4), 25-34. Clark M. A. (2001). National Academy of Sports Medicine. Thousand Oaks, Ca. Esformes JI, Bampouras TM. (2013). J Strength Cond Res 27(11), 2997-3000

Utilizzazione della scheda clinica per l'epilessia in uno studio caso-controllo

Presentazione di Scheda Clinica per la rilevazione dei casi di epilessia per studi clinici e epidemiologic

A retrospective study of epilepsy in the district of Copparo, northern Italy

none10noIncidence trend of epilepsy in Copparo, ItalynoneGranieri E.; Tola M.R.; Monetti V.C.; Munerati V.; Panarelli M.; Mazzotti G.; Luongo L.; Pavoni M.; Paolino E.; Carreras M.Granieri, Enrico Gavino Giuseppe; Tola, M. R.; Monetti, V. C.; Munerati, V.; Panarelli, M.; Mazzotti, G.; Luongo, L.; Pavoni, M.; Paolino, E.; Carreras, M

18F-Florbetaben PET/CT to Assess Alzheimer's Disease: A new Analysis Method for Regional Amyloid Quantification

BACKGROUND AND PURPOSE: While AD can be definitively confirmed by postmortem histopathologic examination, in vivo imaging may improve the clinician's ability to identify AD at the earliest stage. The aim of the study was to test the performance of amyloid PET using new processing imaging algorithm for more precise diagnosis of AD. METHODS: Amyloid PET results using a new processing imaging algorithm (MRI-Less and AAL Atlas) were correlated with clinical, cognitive status, CSF analysis, and other imaging. The regional SUVR using the white matter of cerebellum as reference region and scores from clinical and cognitive tests were used to create ROC curves. Leave-one-out cross-validation was carried out to validate the results. RESULTS: Forty-four consecutive patients with clinical evidence of dementia, were retrospectively evaluated. Amyloid PET scan was positive in 26/44 patients with dementia. After integration with 18F-FDG PET, clinical data and CSF protein levels, 22 of them were classified as AD, the remaining 4 as vascular or frontotemporal dementia. Amyloid and FDG PET, CDR 1, CSF Tau, and p-tau levels showed the best true positive and true negative rates (amyloid PET: AUC =.85, sensitivity.91, specificity.79). A SUVR value of 1.006 in the inferior frontal cortex and of 1.03 in the precuneus region was the best cutoff SUVR value and showed a good correlation with the diagnosis of AD. Thirteen of 44 amyloid PET positive patients have been enrolled in clinical trials using antiamyloid approaches. CONCLUSIONS: Amyloid PET using SPM-normalized SUVR analysis showed high predictive power for the differential diagnosis of AD

Profilo clinico-epidemiologico della sclerosi multipla nella provincia di Ferrara

Studio descrittivo sulla prevalenza e sull'incidenza della sclerosi multipla nella provincia di Ferrara, Italia