1. A training assisting apparatus for assisting an examinee in overcoming the examinee's worries by displaying a training image on a display section, comprising: a physical state acquiring section including a sensor that acquires a heart rate of the examinee looking at the training image displayed on the display section; and a display control section controls the display section which includes a display screen to display the training image such that a change quantity of at least one of a combination ratio of the training image, a superimposing degree of the training image and the number of simultaneously displayed training images toward a negative direction is larger, in association with a case where a change quantity per unit time of the heart rate, acquired by the physical state acquiring section, towards a positive direction is larger further comprising an examinee's line-of-sight measurement section that detects a direction of line of sight of the examinee, wherein the display control section controls the display section to display the training image by causing the training image to follow the direction of the line of sight of the examinee such that a change quantity of the speed of causing the training image to follow the direction of the line of sight measured by the examinee's line-of-sight measurement section toward a negative direction is larger, in association with a case where a change quantity per unit time of the heart rate, acquired by the physical state acquiring section, towards a positive direction is larger; and wherein the display control section controls the display section to display the training image by stopping causing the training image to follow the direction of line of sight of the examinee, in association with a case where a change quantity per unit time of the heart rate, acquired by the physical state acquiring section, exceeds a predetermined rate indicating that the examinee is feeling extraordinary fear.