The Experts below are selected from a list of 114 Experts worldwide ranked by ideXlab platform
Gerald E Landwer - One of the best experts on this subject based on the ideXlab platform.
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the effect of pedal Crank Arm length on joint angle and power production in upright cycle ergometry
Journal of Sports Sciences, 2000Co-Authors: Danny Too, Gerald E LandwerAbstract:The aim of this study was to determine the effect of five pedal Crank Arm lengths (110, 145, 180, 230 and 265 mm) on hip, knee and ankle angles and on the peak, mean and minimum power production of 11 males (26.6 +/- 3.8 years, 179 +/- 8 cm, 79.6 +/- 9.5 kg) during upright cycle ergometry. Computerized 30 s Wingate power tests were performed on a free weight Monark cycle ergometer against a resistance of 8.5% body weight. Joint angles were determined, with an Ariel Performance Analysis System, from videotape recorded at 100 Hz. Repeated-measures analysis of variance and contrast comparisons revealed that, with increasing Crank Arm lengths, there was a significant decrement in the minimum hip and knee angles, a significant increment in the ranges of motion of the joints, and a parabolic curve to describe power production. The largest peak and mean powers occurred with a Crank Arm length of 180 mm. We conclude that 35 mm changes in pedal Crank Arm length significantly alter both hip and knee joint angles an...
Jussan Da Silva Bahia Nascimento - One of the best experts on this subject based on the ideXlab platform.
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a new Crank Arm based load cell for the 3d analysis of the force applied by a cyclist
Sensors, 2014Co-Authors: Alexandre Balbinot, Cleiton Milani, Jussan Da Silva Bahia NascimentoAbstract:This report describes a new Crank Arm-based force platform designed to evaluate the three-dimensional force applied to the pedals by cyclists in real conditions. The force platform was designed to be fitted on a conventional competition bicycle Crankset while data is transmitted wirelessly through a BluetoothTM module and also stored on a SD card. A 3D solid model is created in the SolidWorks (Dassault Systemes SOLIDWORKS Corp.) to analyze the static and dynamic characteristics of the Crank Arm by using the finite elements technique. Each Crankset Arm is used as a load cell based on strain gauges configured as three Wheatstone bridges. The signals are conditioned on a printed circuit board attached directly to the structure. The load cell showed a maximum nonlinearity error between 0.36% and 0.61% and a maximum uncertainty of 2.3% referred to the sensitivity of each channel. A roller trainer equipped with an optical encoder was also developed, allowing the measurement of the wheel's instantaneous velocity.
Danny Too - One of the best experts on this subject based on the ideXlab platform.
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the effect of pedal Crank Arm length on joint angle and power production in upright cycle ergometry
Journal of Sports Sciences, 2000Co-Authors: Danny Too, Gerald E LandwerAbstract:The aim of this study was to determine the effect of five pedal Crank Arm lengths (110, 145, 180, 230 and 265 mm) on hip, knee and ankle angles and on the peak, mean and minimum power production of 11 males (26.6 +/- 3.8 years, 179 +/- 8 cm, 79.6 +/- 9.5 kg) during upright cycle ergometry. Computerized 30 s Wingate power tests were performed on a free weight Monark cycle ergometer against a resistance of 8.5% body weight. Joint angles were determined, with an Ariel Performance Analysis System, from videotape recorded at 100 Hz. Repeated-measures analysis of variance and contrast comparisons revealed that, with increasing Crank Arm lengths, there was a significant decrement in the minimum hip and knee angles, a significant increment in the ranges of motion of the joints, and a parabolic curve to describe power production. The largest peak and mean powers occurred with a Crank Arm length of 180 mm. We conclude that 35 mm changes in pedal Crank Arm length significantly alter both hip and knee joint angles an...
Alexandre Balbinot - One of the best experts on this subject based on the ideXlab platform.
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a new Crank Arm based load cell with built in conditioning circuit and strain gages to measure the components of the force applied by a cyclist
International Conference of the IEEE Engineering in Medicine and Biology Society, 2016Co-Authors: Andre Vieira Pigatto, Karina O A Moura, Gabriela W Favieiro, Alexandre BalbinotAbstract:This report describes the development of a force platform based on instrumented load cells with built-in conditioning circuit and strain gages to measure and acquire the components of the force that is applied to the bike Crank Arm during pedaling in real conditions, and save them on a SD Card. To accomplish that, a complete new Crank Arm 3D solid model was developed in the SolidWorks, with dimensions equivalent to a commercial Crank set and compatible with a conventional road bike, but with a compartment to support all the electronics necessary to measure 3 components of the force applied to the pedal during pedaling. After that, a 6082 T6 Aluminum Crankset based on the solid model was made and instrumented with three Wheatstone bridges each. The signals were conditioned on a printed circuit board, made on SMD technology, and acquired using a microcontroller with a DAC. Static deformation analysis showed a linearity error below 0.6% for all six channels. Dynamic analysis showed a natural frequency above 136Hz. A one-factor experiment design was performed with 5 amateur cyclists. ANOVA showed that the cyclist weight causes significant variation on the force applied to the bicycle pedal and its bilateral symmetry.
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a new Crank Arm based load cell for the 3d analysis of the force applied by a cyclist
Sensors, 2014Co-Authors: Alexandre Balbinot, Cleiton Milani, Jussan Da Silva Bahia NascimentoAbstract:This report describes a new Crank Arm-based force platform designed to evaluate the three-dimensional force applied to the pedals by cyclists in real conditions. The force platform was designed to be fitted on a conventional competition bicycle Crankset while data is transmitted wirelessly through a BluetoothTM module and also stored on a SD card. A 3D solid model is created in the SolidWorks (Dassault Systemes SOLIDWORKS Corp.) to analyze the static and dynamic characteristics of the Crank Arm by using the finite elements technique. Each Crankset Arm is used as a load cell based on strain gauges configured as three Wheatstone bridges. The signals are conditioned on a printed circuit board attached directly to the structure. The load cell showed a maximum nonlinearity error between 0.36% and 0.61% and a maximum uncertainty of 2.3% referred to the sensitivity of each channel. A roller trainer equipped with an optical encoder was also developed, allowing the measurement of the wheel's instantaneous velocity.
Cleiton Milani - One of the best experts on this subject based on the ideXlab platform.
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a new Crank Arm based load cell for the 3d analysis of the force applied by a cyclist
Sensors, 2014Co-Authors: Alexandre Balbinot, Cleiton Milani, Jussan Da Silva Bahia NascimentoAbstract:This report describes a new Crank Arm-based force platform designed to evaluate the three-dimensional force applied to the pedals by cyclists in real conditions. The force platform was designed to be fitted on a conventional competition bicycle Crankset while data is transmitted wirelessly through a BluetoothTM module and also stored on a SD card. A 3D solid model is created in the SolidWorks (Dassault Systemes SOLIDWORKS Corp.) to analyze the static and dynamic characteristics of the Crank Arm by using the finite elements technique. Each Crankset Arm is used as a load cell based on strain gauges configured as three Wheatstone bridges. The signals are conditioned on a printed circuit board attached directly to the structure. The load cell showed a maximum nonlinearity error between 0.36% and 0.61% and a maximum uncertainty of 2.3% referred to the sensitivity of each channel. A roller trainer equipped with an optical encoder was also developed, allowing the measurement of the wheel's instantaneous velocity.