The aims of this study were to: (1) assess the stability (mean and normative) of the lap performance, and a set of clean swim and turn variables of junior male swimmers in the 200 m freestyle, and; (2) verify the relationship between the start, clean swim, turn, and finish phases in the 200 m freestyle. Seventy-six individual races in the 200 m freestyle at the 2019 long-course LEN European Junior Championships were analysed. Start, clean swim, turn, and finish variables were assessed. The lap performance showed a significant variance. The highest variation was verified between the first and third lap (Coefficient of Variation = 7.37%). The clean swim and the total turn also presented a significant variance. Normative stability indicated a moderate to very-high stability for all variables. All phases of the race had significant correlations with the final race time (p < 0.001). The total turn (i.e., the total time spent to perform the turn), specifically turn #3, showed the largest correlation with the total race performance. The significant correlation between all phases of the race and the final race time indicates that coaches and swimmers should customise the swimmers' preparation and race strategy at major international competitions, based on the individual characteristics of each swimmer.
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http://dx.doi.org/10.1080/14763141.2021.1952298 | DOI Listing |
Toxics
December 2024
College of Environment and Natural Resources, Can Tho University, 3/2 Street, Can Tho City 900000, Vietnam.
This study assessed the effects of fenobucarb (F) (1%, 10%, and 20% of the LC-96h value) on the brain cholinesterase (AChE) activity, food intake (FI), feed conversion rate (FCR), and growth of silver barb (, Bleeker, 1849). It also assessed the AChE inhibition levels that cause the abnormal swimming, behavior, and mortality of silver barb and how the feeding regime affects the recovery rate of the AChE activity. The results showed that the brain AChE inhibition increased with the F concentrations.
View Article and Find Full Text PDFTrop Med Health
December 2024
Department of Medical Laboratory Science, College of Medicine and Health Sciences, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia.
Background: Schistosoma spp. and other intestinal parasites are common in Ethiopia. During pregnancy, SCH increases the risk of adverse birth outcomes.
View Article and Find Full Text PDFBioinspir Biomim
January 2025
Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE, School of Mechanical Engineering, Shandong University, Jinan 250061, People's Republic of China.
The special hindleg structure and swimming setae of a water boatman give it a high degree of maneuverability, which plays an important role in swimming. This paper used a high-speed photography platform to extract key points from videos, obtaining the forward and turning movement patterns of the water boatman's hindlegs, as well as the transformation patterns of the setae. A Fourier series was used to establish the movement models of each hindleg joint, and a kinematic model of the hindlegs was established to study the continuous movement characteristics of the hindlegs.
View Article and Find Full Text PDFBehav Brain Res
March 2025
Laboratory of Biochemistry and Molecular Neuropharmacology (LABIONEM), Graduate Program in Biochemistry and Bioprospecting (PPGBBio), Chemical, Pharmaceutical, and Food Sciences Center (CCQFA), Federal University of Pelotas (UFPel), Pelotas, RS 96010-900, Brazil. Electronic address:
1-(2-(4-(4-ethylphenyl)-1H-1,2,3-triazol-1-yl)phenyl)ethanone (ETAP) is a novel hybrid compound containing 1,2,3-triazole and acetophenone. It exhibits antidepressant-like effects in male mice, linked to modulation of serotonergic receptors and monoamine oxidase A (MAO-A) inhibition. This study aimed to evaluate the involvement of the dopaminergic and noradrenergic systems, as well as MAO-B activity inhibition, in the antidepressant-like effect of ETAP in male mice, and to evaluate the antidepressant-like effect of ETAP in female mice.
View Article and Find Full Text PDFJ Environ Sci (China)
June 2025
Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2G3, Canada. Electronic address:
Disinfection of swimming pool water is critical to ensure the safety of the recreational activity for swimmers. However, swimming pools have a constant loading of organic matter from input water and anthropogenic contamination, leading to elevated levels of disinfection byproducts (DBPs). Epidemiological studies have associated increased risks of adverse health effects with frequent exposure to DBPs in swimming pools.
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