Masumoto Kenji, Hamada Ayako, Tomonaga Hiro-Omi, Kodama Kana, Amamoto Yuko, Nishizaki Yoshiko, Hotta Noboru
a Faculty of Integrated Human Studies and Social Sciences , Fukuoka Prefectural University , Tagawa , Fukuoka , Japan.
Res Sports Med. 2015;23(1):27-36. doi: 10.1080/15438627.2014.975810.
The purpose of this study was to compare metabolic costs, rating of perceived exertion (RPE), and stride frequency during backward walking in water and on land. The walking speeds in water were set to be half of those on land. There was no significant difference in metabolic costs and RPE between backward walking in water with a current and on land, at slow and moderate speeds (P > 0.05). However, at the fast speed (i.e., 3.0 and 6.0 km · h(-1) for water and land, respectively), the metabolic costs and RPE during backward walking on land were significantly higher than when walking backward in water with a current (P < 0.05). With regard to backward walking at faster speeds, if the walking speed in water with a current is set at half the speed on land, then the speed will be inadequate for inducing metabolic costs and RPE that are similar to those produced on land.
本研究的目的是比较在水中和陆地上向后行走时的代谢成本、主观用力感觉（RPE）和步频。水中的行走速度设定为陆地行走速度的一半。在有水流的水中向后行走与在陆地上以慢、中速向后行走时，代谢成本和RPE没有显著差异（P>0.05）。然而，在快速行走时（即水中和陆地分别为3.0和6.0 km·h-1），在陆地上向后行走时的代谢成本和RPE显著高于在有水流的水中向后行走时（P<0.05）。对于更快速度的向后行走，如果将有水流的水中行走速度设定为陆地速度的一半，那么该速度将不足以引发与陆地上产生的代谢成本和RPE相似的代谢成本和RPE。
