The purpose of this research was to assess the variability of the oxygen consumption (VO) depending on fin type and the flutter technique used for the different divers' profile. Twenty-three SCUBA divers took part in four 2.5 hour sessions to evaluate a total of six fin models and two flutter techniques. The flutter routines lasted 30 minutes per fin and per technique. Measurements of VO significantly decreased on Jet (20.42 ml*min*kg) and XShot fin (20.87 ml*min*kg) compared to Twin Jet fin (22.81 ml, < 0.05). In addition, the VO was in all cases higher in certified divers than in professional divers (23.87 and 19.00 ml*min*kg, = 0.00). These differences were significant between divers' profile and flutter technique ( < 0.05). Similarly, measurements of VO were higher in frog kick technique than crawl kick technique (22.97 ml*min*kg and 19.96 ml*min*kg, = 0.00). These differences were significant between fin type and flutter technique in all fins ( = 0.03). This study investigated the impact of fin type, flutter technique and divers' profile on VO during diving. Results of this research suggest that combination a diving different factors significantly impacts the divers' VO, thus providing new perspective for election of fin type and flutter technique according to the divers' profile.
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http://dx.doi.org/10.1080/00140139.2020.1745899 | DOI Listing |
Magn Reson Imaging
January 2025
Department of Radiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, No. 1 Da Hua Road, Dong Dan, Beijing 100730, PR China; Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, PR China.
Purpose: This study aimed to evaluate the diagnostic efficacy of time-dependent diffusion magnetic resonance imaging (td-dMRI) and dynamic contrast-enhanced MRI (DCE-MRI)-based kinetic heterogeneity in differentiating suspicious breast lesions (categorised as Breast Imaging Reporting and Data System 4 or 5).
Methods: This prospective study included 51 females with suspicious breast lesions who underwent preoperative breast MRI, including DCE-MRI and td-dMRI. Six kinetic parameters, namely peak, persistent, plateau, washout component, predominant curve type, and heterogeneity, were extracted from the DCE series using MATLAB and SPM software.
J Fish Biol
January 2025
Department of Medicine and Technological Innovation, University of Insubria, Varese, Italy.
J Eat Disord
December 2024
Folkhälsan Research Center, Helsinki, Finland.
Background: Binge eating, a type of disordered eating, is relatively common among youth and predisposes them to many adverse health outcomes. Diverse psychological and social factors may be associated with binge eating. The aim of this study was to examine child and parental psychosocial determinants of binge eating and its impact on indicators of obesity.
View Article and Find Full Text PDFCompsanthias new genus is described for Anthias ventralis Randall (type species) and A. hawaiiensis Randall, which had been previously classified in the genus Pseudanthias Bleeker. Compsanthias is distinguished from other anthiadid genera in having the following combination of characters: dorsal-fin rays X,16-18, usually X,17; anal-fin rays III,9-10, usually III,9; pectoral-fin rays 14-16, usually 15, most rays branched; branched caudal-fin rays 7+6; tubed scales in lateral series 39-46.
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