Modelling the effect of oar shaft bending during the rowing stroke

Sliasas, Andrew; Tullis, S.

doi:10.1177/1754337111408187

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…The propulsion phase is more debated as underlined in the review of Caplan in 2010 [13]. All authors agree that the initial acceleration phase is dominated by drag [14] but once the boat reaches its steady motion lift plays a role [15,16] as well as the elasticity of the shaft [17][18][19]. Theoretically, most of the studies are developed in the footprints of the pioneering work of Alexander [20] and show that observations can be satisfactorily approached with a one dimensional momentum balance, infinitely stiff oars with inertia and non-infinitesimal stroke angles, and quadratic relationships between force and velocity for the boat and oar blade [21].…”

Section: Introductionmentioning

confidence: 99%

Physics of rowing oars

et al. 2019

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In each rowing sport (rowing, kayaking, canoeing), the oars have their very own characteristics most of the time selected through a long time experience. Here we focus on rowing and address experimentally and theoretically the problem of rowing efficiency as function of oar lengths and blades sizes. In contrast with previous studies which consider imposed kinematics, we set an imposed force framework which is closer to human constraints. We find that optimal oar lengths and blades sizes depend on sports and athletes strength, and we provide an optimization scheme.

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Section: Introductionmentioning

confidence: 99%

Physics of rowing oars

et al. 2019

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“…Regardless of the specific goals of each study, most available systems focus on the parameters concerned with the performance of a certain subsystem of the overall problem, such as the boat, the rowing equipment, or the athlete [29,[31][32][33][34][35][36][37][38][39][40][41]. Today, only a limited number of studies present measured results from multi-sensor/multi-purpose monitoring systems [10,[42][43][44].…”

Section: Background and Motivationmentioning

confidence: 99%

A Rigorous and Integrated On-Water Monitoring System for Performance and Technique Improvement in Rowing

Mpimis

Gikas

Gourgoulis

2023

Sensors

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This paper presents a prototype, on-water rowing monitoring system and its testing results for a single scull boat. The proposed system aims at recording critical kinetic (athlete biomechanics and oar/seat movements) and kinematic (boat position, velocity, acceleration, and attitude) parameters for sport performance evaluation and rowing technique improvement. The data acquisition unit is organized in two parts: the first part aims at logging boat kinematics based on GNSS/INS filtering, while the second one facilitates kinetics data recording using a series of analog sensors (potentiometers, strain gauges) installed on the athlete’s body and the boat seat and oars. Both parts are connected to a central unit featuring analog voltage digitizers and a micro-PC for device handling and data storing. In order to test the performance of the system a series of field trials were undertaken featuring different observation scenarios as well as intentionally induced errors in the rowing technique. Analysis revealed the high performance of the system in terms of sensor completeness and setup procedures as well as operational efficiency. Moreover, system performance evaluation exercised through studying raw data recordings and resultant parameters at stroke cycle and average (standardized) stroke cycle level confirmed the fruitfulness of the proposed approach and system and its potential for implementation on a broad scale. Finally, the data acquired from the proposed system were used to compute the adopted input parameters and performance indicators to characterize the system in terms of functionality and operational efficiency.

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“…Previous studies that have considered the effects of oar-shaft stiffness 14,16 and length 13 on rowing performance have been largely theoretical. In contrast, the following work experimentally measures the biomechanics of rowing with oar-shafts of different stiffness and length, and discusses the results in relation to oar-shaft deflection, inverse deflection, and lever theory.…”

Section: Introductionmentioning

confidence: 99%

The effects of oar-shaft stiffness and length on rowing biomechanics

Laschowski

Nolte

Adamovsky

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part P:

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This work investigates the effects of oar-shaft stiffness and length on rowing biomechanics. The mechanical properties of the oar-shafts were examined using an end-loaded cantilever system, and theoretical relations were proposed between the mechanics of the oar-shafts and rowing performance. On-water experiments were subsequently conducted and rowing biomechanics measured via the PowerLine Rowing Instrumentation System. The PowerLine system measures force and oar angle on the oarlock, as well as proper boat acceleration. The convergent validity and test-retest reliability of the PowerLine force measurements were determined prior to the on-water experiments.Thereafter, rowers were tested over a set distance using oar-shafts of different stiffness and length. There were slight differences in the biomechanics between rowing with the different oar configurations. However, the measured differences in the biomechanical parameters were on the same order of magnitude as the rower's inter-stroke inconsistencies.

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Modelling the effect of oar shaft bending during the rowing stroke

Cited by 4 publications

References 10 publications

Physics of rowing oars

Physics of rowing oars

A Rigorous and Integrated On-Water Monitoring System for Performance and Technique Improvement in Rowing

The effects of oar-shaft stiffness and length on rowing biomechanics

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