To provide a mat capable of achieving recovery and enhancement of a walking function and a balance function of a user by giving appropriate instability to the user walking or running on the mat, and safely usable by a person who has difficulty in walking by raising the feet.SOLUTION: A mat 1 for walking training or running training, comprising a net-like knitted resin structure 1A in which a plurality of linear molten resins are entangled and partially heat-deposited is configured such that: a plurality of hard areas 10 and soft areas 20 are alternately formed in an advancing direction of a user； a bulk density of the hard area 10 is larger than that of the soft area 20； a width V of the hard area 10 is smaller than a width W of the soft area 20； and the widths W of the soft areas 20 are different in one soft area 20 and the other soft area 20 adjacent each other across the hard area 10.SELECTED DRAWING: Figure 1【課題】マット上を歩行又は走行する使用者に対して適度な不安定さを与え、使用者の歩行機能やバランス機能等の回復や増進を図ることができ、かつ、足を上げて歩行することが困難な者も安全に利用できるマットを提供すること。【解決手段】複数の線状溶融樹脂が絡み合い部分的に熱溶着した網状の編成樹脂構造体１Ａからなり、使用者の進行方向に硬領域１０と軟領域２０が交互にそれぞれ複数形成され、硬領域１０の嵩密度が、軟領域２０の嵩密度よりも大きく、硬領域１０の幅Ｖが、軟領域２０の幅Ｗよりも小さく、軟領域２０の幅Ｗが、硬領域１０を挟んで隣り合う一方の軟領域２０と他方の軟領域２０とで異なる歩行訓練又は走行訓練用のマット１とする。【選択図】図１
