Rowing: the influence of the angle of inclination of the leg support on the force in the paddle

8th International Conference on Advanced Concepts in Mechanical Engineering

Budescu, E.^1 ; Merticaru, Eug.^1 ; Chirazi, M.^2

Mechanical Engineering, Mechatronics and Robotics Department, Gheorghe Asachi Technical University of Iasi, Iasi, Romania^1

Physical Education and Sports Faculty, Alexandra Loan Cuza University of Iasi, Iasi, Romania^2

关键词: Anthropometric dimensions;    Horizontal components;    Inclination angles;    Optimum angle;    Reaction forces;    Sliding force;    Two-component;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/444/5/052010/pdf
DOI  :  10.1088/1757-899X/444/5/052010

来源: IOP

【 摘 要 】

This study is aiming to emphasize the relation between the force at the paddle and the inclination angle of the support of the leg on the skiff, depending on the anthropometric dimensions of the sportsman. This angle, which is adjustable, makes the reaction force between the support and the leg to be decomposed into two components, namely: a horizontal component equivalent to the force at the paddle and a component along the support which is determining the sliding force between the leg and the support. The reaction force between the leg and the support depends also, on the anthropometric dimensions of the thigh and the shank as well as on the extension angles of the thigh and shank. The whole assembly formed of shank, thigh and the sliding chair on which the sportsman is sitting can be likened to an eccentric crank-piston mechanism. The numerical study emphasized that the increasing angle of inclination of the support produces the increasing of the horizontal component of the reaction force leg-support. On the other side, when the shank and the thigh are in prolongation, the inclination angle of the support has to be around 75 degrees so that the entire sole of the foot to be in contact with the support. Using the relations emphasized in the paper, there can be determined the optimum angle, personalized, for each sportsman.