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The effect of pitched and vertical ladder ergometer climbing on cardiorespiratory and psychophysical variables.

Barron, Peter-James; Burgess, Katherine; Cooper, Kay; Stewart, Arthur D.

Authors

Peter-James Barron

Katherine Burgess



Abstract

This study aimed to assess whether modifying the pitch of a 75{deg} ladder ergometer to vertical had a cardiorespiratory or psychophysical effect on climbing. Nine male participants climbed a ladder ergometer at 75{deg} and subsequently at 90{deg}, adjusted for an equivalent vertical climb rate, completing three climbing bouts at different vertical speeds. One participant dropped out being unable to complete the climb under the 90{deg} condition. Each was monitored for heart rate (HR), VO2 and rating of perceived exertion (RPE). Results showed vertical climbing induced higher VO2 (mean increase 17.3%), higher HR (mean increase 15.8%), and higher RPE at all speeds and that moving from 75{deg} to vertical exacerbates the effect of speed on the cardiorespiratory response to climbing. This may be explained by increased force production required to maintain balance in a vertical climbing position when the body's centre of mass is not above the feet.

Journal Article Type Article
Publication Date Jan 31, 2018
Journal Applied ergonomics
Print ISSN 0003-6870
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 66
Pages 172-176
Institution Citation BARRON, P.-J., BURGESS, K., COOPER, K. and STEWART, A.D. 2018. The effect of pitched and vertical ladder ergometer climbing on cardiorespiratory and psychophysical variables. Applied ergonomics [online], 66, pages 172-176. Available from: https://doi.org/10.1016/j.apergo.2017.09.001
DOI https://doi.org/10.1016/j.apergo.2017.09.001
Keywords Ladder ergometer; Pitched ladder climbing; Vertical ladder climbing; Ladder climbing physiology

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