Caution: The use of an electromagnetic device to measure trunk kinematics on rowing ergometers |
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| Authors: | Leo Ng Angus Burnett Amity Campbell Peter O'Sullivan |
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| Institution: | 1. School of Physiotherapy , Curtin University of Technology , Bentleyleo.ng@curtin.edu.au;3. School of Physiotherapy , Curtin University of Technology , Bentley;4. School of Exercise, Biomedical and Health Sciences , Edith Cowan University , Perth, Australia |
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| Abstract: | The aim of the study was to determine the accuracy and variability of an electromagnetic device in measuring spinal kinematics on a traditional and replica rowing ergometer. Kinematic data collected from the 3-Space FastrakTM system using a Standard Concept II ergometer were compared with a replica ergometer that was in part, composed of non-ferrous materials (modified ergometer). The Fastrak's sensors were fixed to a wooden “spine” with known angles (as measured by an inclinometer). The mean inclinometer angle from four sensors (1 ± 0.2°) was significantly different than the mean angle recorded on the standard ergometer ( ? 5.4 ± 3.4°) (p = 0.007) whilst the angles recorded on the modified ergometer (1.4 ± 0.8°) were statistically equivalent to the inclinometer recordings (p = 0.660). These results indicate that the presence of ferrous material in a standard ergometer reduced the accuracy and increased the variability of data collected with the electromagnetic device. However, information collected on largely non-ferrous ergometers can provide coaches, biomechanists and clinicians with a quick and effective way to measure trunk kinematics during ergometer rowing. |
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| Keywords: | Electromagnetic device trunk kinematics rowing ergometer |
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