Short-term maximum rowing power

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dc.contributor.advisorFarrar, Roger P.
dc.creatorSprague, Robert Chapman IV
dc.date.accessioned2021-10-28T21:38:29Z
dc.date.available2021-10-28T21:38:29Z
dc.date.issued2004-05-22
dc.description.abstractForce-velocity and power-velocity relationships for ergometer-based, whole-body exercise appear incomplete; therefore, a Concept2 Model C rowing ergometer was modified so that resistance was provided solely by the moment of inertia (I) of the flywheel. Flywheel velocity (ω) and acceleration (α) were determined from time measurements (± 1 μs) recorded with a reflective sensor. Instantaneous force (F [subscript I]) and instantaneous power (P [subscript I]) were calculated as Iαr, where r is the radius of the axle sprocket, and Iαω, respectively, and recorded 15 times every flywheel revolution. Peak instantaneous force (F [subscript IP]) and power (P [subscript IP]) and average force (F [subscript acc]) and power (P [subscript acc]) were recorded during the acceleration phase of each stroke. The highest instantaneous (P [subscript IP] max) and average (P [subscript acc] max) power values were identified for each bout. Well-trained male and female rowers completed five bouts of six maximum intensity strokes on the modified ergometer with two minutes of active recovery between each bout. Force-velocity and power-velocity relationships were constructed with data for the six strokes. Force decreased with increasing velocity. Power exhibited a quadratic relationship with v [subscript H], reaching a pinnacle in the 3rd or 4th stroke of each bout for all subjects. P [subscript IP] max occurred at a v [subscript H] of 3.33 ± 0.20 m/s and P [subscript acc] max occurred at a mean v [subscript H] of 3.35 ± 0.18 m/s. Mean P [subscript IP] max and P [subscript acc] max was 3182 ± 369 W and 1971 ± 246 W, respectively. The within-subjects coefficient of variation for P [subscript IP] max was 4.8 ± 0.5% and for P [subscript acc] max was 3.4 ± 0.3%. The inertial load method applied to a rowing ergometer provided a means to determine whole body maximal power and establish detailed force-velocity and power-velocity relationships across a large range of contraction velocities in a single, short bout of exercise. Maximum rowing power in these subjects differed from other whole body modes of exercise, possibly due to differences in the magnitude and kinetics of activationen_US
dc.description.departmentKinesiology and Health Educationen_US
dc.format.mediumelectronicen_US
dc.identifier.urihttps://hdl.handle.net/2152/89706
dc.language.isoengen_US
dc.relation.ispartofUT Electronic Theses and Dissertationsen_US
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en_US
dc.rights.restrictionRestricteden_US
dc.subjectMuscular contractionen_US
dc.subjectRowing poweren_US
dc.subjectForce-velocity relationshipsen_US
dc.titleShort-term maximum rowing poweren_US
dc.typeThesisen_US
dc.type.genreThesisen_US
thesis.degree.departmentKinesiology and Health Educationen_US
thesis.degree.disciplineKinesiologyen_US
thesis.degree.grantorUniversity of Texas at Austinen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US

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