Effect of Randall foils on the rowing propulsive cycle.

Autor:	Cardoso R; Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal.; Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, Porto, Portugal., Fonseca P; Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, Porto, Portugal., Goethel M; Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal.; Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, Porto, Portugal., Abraldes JA; Research Group Movement Sciences and Sport (MS&SPORT), Department of Physical Activity and Sport, Faculty of Sport Sciences, University of Murcia, Murcia, Spain., Gomes BB; CIDAF, Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal., Vilas-Boas JP; Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal.; Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, Porto, Portugal., Fernandes RJ; Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal.; Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, Porto, Portugal.
Jazyk:	angličtina
Zdroj:	Sports biomechanics [Sports Biomech] 2024 Jan 18, pp. 1-10. Date of Electronic Publication: 2024 Jan 18.
DOI:	10.1080/14763141.2023.2298968
Abstrakt:	Rowing performance depends on the design and building materials used for competition. Recently, attempting to improve rowing performance, the Randall foil has been attached to the top edge of a rowing Big blade, making it spoon shaped. The current study aimed to analyse the differences between Big blades with and without Randall foils in force-related variables. Nineteen rowers performed two bouts of 90 s at maximal effort tethered rowing and differences were found in cycle average peak force (4.33 ± 1.46 vs. 5.26 ± 1.57 N/kg), propulsive cycle average time (1.79 ± 0.38 vs. 1.52 ± 0.24 N/kg.s) and rate of force development (8.79 ± 4.75 vs. 12.07 ± 4.60 N/kg/s) for Big blades with and without foils (respectively). Differences were also observed between the middle (4.79 ± 1.21 vs. 4.08 ± 1.48 N/kg) and final phases (4.86 ± 1.45 vs. 4.04 ± 1.47 N/kg) of the rowing effort for the cycle average peak force of Big blades with and without Randall foils. Data suggest a positive effect of these foils on the force-time curve profile. Future studies should focus on testing its influence on free on-water rowing.
Databáze:	MEDLINE
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