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The impact of side and top arm techniques during the backstroke breakout phase on 15-meter swimming performance.
PeerJ
January 2025
Key Laboratory of Sport Training of General Administration of Sport of China, Haidian, Beijing, China.
Background: Research on the swimming starts and turns in professional swimming has become increasingly refined. The breakout phase is a crucial transition from point between underwater and above-water movements. The side arm technique is commonly used during the backstroke breakout phase.
View Article and Find Full Text PDFStroke phase differences in the linear relationship between swimming velocity and vertical body position during front crawl.
Sports Biomech
January 2025
Graduate School of Science and Technology, Shinshu University, Ueda, Nagano, Japan.
We aimed to investigate whether a linear relationship exists between swimming velocity and vertical body position for each stroke phase in front crawl, and to determine whether there are differences in the velocity effect among the stroke phases. Eleven male swimmers performed a 15 m front crawl at various swimming velocities. The whole-body centre of mass (CoM) was estimated from individual digital human models using inverse kinematics.
View Article and Find Full Text PDFSpontaneous snapping-induced jet flows for fast, maneuverable surface and underwater soft flapping swimmer.
Sci Adv
December 2024
Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA.
Manta rays use wing-like pectoral fins for intriguing oscillatory swimming. It provides rich inspiration for designing potentially fast, efficient, and maneuverable soft swimming robots, which, however, have yet to be realized. It remains a grand challenge to combine fast speed, high efficiency, and high maneuverability in a single soft swimmer while using simple actuation and control.
View Article and Find Full Text PDFA Controllable Nonlinear Bistable "Fishtail" Boosting Robotic Swimmer with Excellent Maneuverability and High Energy Efficiency.
Soft Robot
November 2024
Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China.
High maneuverability and energy efficiency are crucial for underwater robots to perform tasks in engineering practice. Natural evolution empowers aquatic species with skills of agile and efficient swimming, which can be deliberately employed for better robotic swimmers. A critical issue for efficient robotic swimmers is the design and control of an appropriate propulsion system.
View Article and Find Full Text PDFDetermining Validity and Reliability of an In-Field Performance Analysis System for Swimming.
Sensors (Basel)
November 2024
Department of Environmental and Bioscience, School of Business, Innovation and Sustainability, Halmstad University, 30118 Halmstad, Sweden.
Article Synopsis
- The study aimed to validate a mobile performance analysis system (PAS) for measuring swimming performance, using a Kistler starting block with force plates and 2D cameras as a reference.
- It involved 47 volunteers from the Swiss national swimming teams, including Olympic medalists, and analyzed 25 performance parameters, finding high validity for 7 of them.
- The PAS demonstrated strong interrater reliability for 21 parameters, providing reference values for junior and adult swimmers to assess start, turn, and swimming performance effectively.
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