In Japanese, it is called "nanba aruki." It is an ancient Japanese way of moving the body, and is quite different from modern walking. One of the characteristics of this movement is that it generates power from the core. For example, when you lift your leg, you do not pull it up with the thigh muscles, but rather by moving the skeleton of the core in tandem. Meanwhile, the opposite leg generates power to push firmly against the ground. In this case, the point of action of the power line is the heel, not the toes. You push with your heel, not with your toes. As a result, you save energy when climbing mountain trails or stairs. It's interesting, isn't it?
日本語では「ナンバ歩き」と言います。日本古来の身体の動かし方で、現代の歩き方とは随分と違います。動きの特徴の一つに、体幹からパワーを出す動かし方があげられます。例えば足を上げる場合、腿の筋肉で足を引き上げるのではなく、体幹部の骨格を連動して動かすことで足が上がります。一方で、反対側の足にはしっかりと地面を押すパワーが生まれます。その場合のパワーラインの作用点はつま先ではなくて踵です。つま先で蹴らずに踵で押す。結果、登山道や階段の登りは省エネに。面白いですね。
まほろば倶楽部：www.otr.pxc.jp/~mahoroba/