Abstract: A shoe insole having a protruding portion for stimulating the plantar side of a foot, and both shoe insole surfaces are used. The insole contains: a flat plate-shaped base portion made of a flexible material; and a protruding portion from at least one of the first and second insole surfaces and stimulates the plantar side of a foot. The first and second insole surfaces stimulate the same portion of the right and left feet when a load is applied by the foot from the second surface where the insole is in one of right and left shoes with the first surface having the protruding portion in contact with the shoe mid-sole portion, and when a load is applied by the foot from the first surface where the shoe insole is placed in the other of right and left shoes with the second surface in contact with the mid sole portion.

Abstract: A training device is provided for training a foot using the device. The training device includes a fulcrum placed at a center and four projections that project in different directions from the fulcrum. Each of the four projections have elastic members that are bendable. The training device is configured to improve foot muscle strength by bending and stretching the elastic members. At least two of the four projections have different degrees of elasticity in flexure as determined when a force is applied to a distal end of each of the at least two projections to bend the elastic members. The four projections project in cross directions from the fulcrum at the center. Each pair of projections that oppose each other across the fulcrum are arranged on a straight line.

Abstract: A training device and a method for training a foot using the using the device; the device including a fulcrum placed at a center, four projections, and projecting in different directions from the fulcrum, each of the four projections having, at least in a portion thereof, elastic members that are bendable. The training device is configured to improve foot muscle strength by bending and stretching the elastic members. At least two of the four projections have different degrees of elasticity in flexure as determined when a force is applied to a distal end of each of the at least two projections to bend the elastic members. The four projections project in cross directions from the fulcrum at the center, and, for each pair of projections that oppose each other across the fulcrum, the projections are arranged on a straight line. None of the four projections has an annular structure.

Abstract: Provided is a sacroiliac belt having a high holding ability for a user's pelvis as well as a high tightening effect to the user's sacroiliac joints. The sacroiliac belt has a belt pair that forms a pelvic holding loop to hold a user's pelvis. The belt pair has a ilium belt that is wound around the user's waist, and a second belt selected from either a buttock belt that is wound around the user's waist passing under the user's buttocks, lifting up the buttocks, or a lumbar belt that is wound around the user's waist, passing a back side of the user's lumbar curve located immediately above the pelvis. Both ends of the second belt are each connected to the ilium belt inside both ends of the ilium belt.

Abstract: Provided is a sacroiliac belt having a high holding ability for a user's pelvis as well as a high tightening effect to the user's sacroiliac joints. The sacroiliac belt has a belt pair that forms a pelvic holding loop to hold a user's pelvis. The belt pair has a ilium belt that is wound around the user's waist, and a second belt selected from either a buttock belt that is wound around the user's waist passing under the user's buttocks, lifting up the buttocks, or a lumbar belt that is wound around the user's waist, passing a back side of the user's lumbar curve located immediately above the pelvis. Both ends of the second belt are each connected to the ilium belt inside both ends of the ilium belt.