Kinematics and kinetics of handcycling propulsion at increasing workloads in able-bodied subjects

Kinematics and kinetics of handcycling propulsion at increasing workloads in able-bodied subjects In Paralympic sports, biomechanical optimisation of movements and equipment seems to be promising for improving performance. In handcycling, information about the biomechanics of this sport is mainly provided by case studies. The aim of the current study was (1) to examine changes in handcycling propulsion kinematics and kinetics due to increasing workloads and (2) identify parameters that are associated with peak aerobic performance. Twelve non-disabled male competitive triathletes without handcycling experience voluntarily participated in the study. They performed an initial familiarisation protocol and incremental step test until exhaustion in a recumbent racing handcycle that was attached to an ergometer. During the incremental test, tangential crank kinetics, 3D joint kinematics, blood lactate and ratings of perceived exertion (local and global) were identified. As a performance criterion, the maximal power output during the step test (P ) was calculated and correlated with biomechanical parameters. For higher workloads, an increase in crank torque max was observed that was even more pronounced in the pull phase than in the push phase. Furthermore, participants showed an increase in shoulder internal rotation and abduction and a decrease in elbow flexion and retroversion. These changes were negatively correlated with performance. At high workloads, it seems that http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Sports Engineering Springer Journals

Kinematics and kinetics of handcycling propulsion at increasing workloads in able-bodied subjects

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Publisher
Springer Journals
Copyright
Copyright © 2018 by International Sports Engineering Association
Subject
Engineering; Theoretical and Applied Mechanics; Engineering Design; Materials Science, general; Sports Medicine; Biomedical Engineering; Rehabilitation Medicine
ISSN
1369-7072
eISSN
1460-2687
D.O.I.
10.1007/s12283-018-0269-y
Publisher site
See Article on Publisher Site

Abstract

In Paralympic sports, biomechanical optimisation of movements and equipment seems to be promising for improving performance. In handcycling, information about the biomechanics of this sport is mainly provided by case studies. The aim of the current study was (1) to examine changes in handcycling propulsion kinematics and kinetics due to increasing workloads and (2) identify parameters that are associated with peak aerobic performance. Twelve non-disabled male competitive triathletes without handcycling experience voluntarily participated in the study. They performed an initial familiarisation protocol and incremental step test until exhaustion in a recumbent racing handcycle that was attached to an ergometer. During the incremental test, tangential crank kinetics, 3D joint kinematics, blood lactate and ratings of perceived exertion (local and global) were identified. As a performance criterion, the maximal power output during the step test (P ) was calculated and correlated with biomechanical parameters. For higher workloads, an increase in crank torque max was observed that was even more pronounced in the pull phase than in the push phase. Furthermore, participants showed an increase in shoulder internal rotation and abduction and a decrease in elbow flexion and retroversion. These changes were negatively correlated with performance. At high workloads, it seems that

Journal

Sports EngineeringSpringer Journals

Published: Apr 7, 2018

References

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