Study on the Propulsion Efficiency of Working Ro-Scull based on the Energy Expenditure

Autor:	Kenichi Shimizu, Mitsuharu Yagi, Tadasuke Kawasaki, Hisaaki Takayama
Rok vydání:	2016
Předmět:	Engineering Aeronautics Energy expenditure business.industry Physical fitness Metabolic rate Propulsion business Metabolic equivalent Propulsive efficiency Simulation
Zdroj:	The Journal of Japan Institute of Navigation. 134:52-57
ISSN:	2187-3275 0388-7405
DOI:	10.9749/jin.134.52
Popis:	The Japanese boat “Wasen” uses “Ro-Scull” as a human-powered propulsion system. These traditional boats and propulsion system are almost vanished in Japan due to decrease in material Wood, and boat-builder’s aging. “Ro-Scull” is thought to be effective propulsive method compared to other human-powered boat such as canoe and cutter boat. In this study, the authors evaluate propulsive efficiency of “Ro-Scull” based on active metabolic rate (MR). The authors measured MR and metabolic equivalents (Mets) during “Ro-Scull”, walking, and jogging exercise by using indirect calorimeter. MR and Mets during “Ro-Scull” exercise were nearly equal to walking ones. Energy conversion efficiency of “Ro-scull” was 12.3%. These suggest that propulsion efficiency of “Ro-Scull” is efficient, and its exercise can be done for a prolonged time as well as walking. “Ro-Scull” exercise seems to be useful way to become familiar with maritime activities and seamanship.
Databáze:	OpenAIRE
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