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BioMed Research International
Volume 2017 (2017), Article ID 3919826, 7 pages
Research Article

Impact of Carbohydrate-Electrolyte Beverage Ingestion on Heart Rate Response While Climbing Mountain Fuji at ~3000 m

1Division of Human Environmental Science, Mount Fuji Research Institute, Kamiyoshida 5597-1, Fujiyoshida, Yamanashi 4030005, Japan
2Mount Fuji Climbing School, Asahi 4-1-7, Fujiyoshida, Yamanashi 4030012, Japan
3Department of Sports Medical Sciences, Shinshu University Graduate School of Medicine, Asahi 3-1-1, Matsumoto, Nagano 3908621, Japan
4Institute for Biomedical Sciences, Asahi 3-1-1, Matsumoto, Nagano 3908621, Japan

Correspondence should be addressed to Masahiro Horiuchi

Received 21 March 2017; Revised 31 May 2017; Accepted 7 June 2017; Published 10 July 2017

Academic Editor: Jason Ng

Copyright © 2017 Masahiro Horiuchi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We sought to investigate whether carbohydrate-electrolyte beverage ingestion reduced heart rate (HR) in twenty-three healthy young adults while climbing Mount Fuji at a given exercise intensity. Twenty-three healthy adults were randomly divided into two groups: the tap water (11 males [M] and 1 female [F]) and the carbohydrate-electrolyte group (10 M and 1 F). HR and activity energy expenditure (AEE) were recorded every min. The HRs for the first 30 minutes of climbing were not significantly different between the groups [121 ± 2 beats per min (bpm) in the tap water and 116 ± 3 bpm in the carbohydrate-electrolyte]; however, HR significantly increased with climbing in the tap water group (129 ± 2 bpm) but showed no significant increase in the carbohydrate-electrolyte group (121 ± 3 bpm). In addition, body weight changes throughout two days ascending and descending on Mount Fuji were inversely related to changes in resting HR. Further, individual variation of body weight changes was suppressed by carbohydrate-electrolyte drink. Collectively, carbohydrate-electrolyte beverage intake may attenuate an increase in HR at a given AEE while mountaineering at ~3000 m compared with tap water intake.