A multipurpose exercise device having a base that rests on a support surface and a user platform upon which the user stands. The lower end of a perpendicular support post is mounted to the base to axially pivot thereon and the upper end of the post is pivotally mounted to the lower surface of the user platform. The user platform pivots with the support post in a horizontal plane parallel to the support surface and pivots on the support post in a vertical plane perpendicular to the horizontal support surface. Resistance elements are provided having one end mounted to the support post and the other end mounted to the base to control the velocity and angle of pivot of the user platform in the horizontal plane. Preferably, a plurality of resistance elements are provided having one end mounted to the base and the other end mounted to the user platform to control the velocity and angle of pivot of the user platform in the vertical plane. In use, the user stands on the user platform and performs exercise motions to propel the user platform to pivot in the horizontal plane and the vertical plane. The user platform may include various type foot mounts to simulate sports activities such as skiing and snowboarding.

A method for providing feedback to a skier includes: receiving, by a feedback computer, sensor data from a plurality of sensors located in a ski boot of the skier, the sensor data representing a movement of the skier during a ski run; receiving, by the feedback computer, video data representing a video recording of the skier during the ski run; after the ski run, synchronizing, by the feedback computer, the sensor data and the video data; and simultaneously displaying, on a display screen in electrical communication with the feedback computer, the video recording and the sensor data.

A method for providing feedback to a skier includes: receiving, by a feedback computer, sensor data from a plurality of sensors located in a ski boot of the skier, the sensor data representing a movement of the skier during a ski run; receiving, by the feedback computer, video data representing a video recording of the skier during the ski run; after the ski run, synchronizing, by the feedback computer, the sensor data and the video data; and simultaneously displaying, on a display screen in electrical communication with the feedback computer, the video recording and the sensor data.

A simulation system includes a processor including hardware. The processor performs a moving body process of performing a process of moving a moving body corresponding to a user wearing an HMD in a virtual space, a virtual camera control process of controlling a virtual camera moving in accordance with a movement of the moving body, and a display process of generating an image as viewed from the virtual camera in the virtual space as a display image of the head mounted display. The processor performs, in the display process, an image effect process for motion sickness prevention as a process of blurring, compared with a display object in a given distance range from the virtual camera, an image of a display object in a distance range farther than the given distance range to generate the display image.

A simulation system includes a processor including hardware. The processor performs a moving body process of performing a process of moving a moving body corresponding to a user wearing an HMD in a virtual space, a virtual camera control process of controlling a virtual camera moving in accordance with a movement of the moving body, and a display process of generating an image as viewed from the virtual camera in the virtual space as a display image of the head mounted display. The processor performs, in the display process, an image effect process for motion sickness prevention as a process of blurring, compared with a display object in a given distance range from the virtual camera, an image of a display object in a distance range farther than the given distance range to generate the display image.

A simulation system includes a processor including hardware. The processor is configured to perform: acquiring tracking information for point-of-view information about a user wearing an HMD; moving a moving body, corresponding to the user, in a virtual space; controlling a virtual camera set as a first person point-of-view of the user; and generating an image as viewed from the virtual camera in the virtual space, as a display image on the HMD. The processor is configured to perform, in controlling the virtual camera, setting the virtual camera so that a position and/or an orientation of the virtual camera is changed based on the tracking information, but orientation change of the virtual camera corresponding to at least one of pitching and rolling is disabled or limited in a case where a traveling direction of the moving body changes.

A simulation system includes a processor including hardware. The processor is configured to perform: acquiring tracking information for point-of-view information about a user wearing an HMD; moving a moving body, corresponding to the user, in a virtual space; controlling a virtual camera set as a first person point-of-view of the user; and generating an image as viewed from the virtual camera in the virtual space, as a display image on the HMD. The processor is configured to perform, in controlling the virtual camera, setting the virtual camera so that a position and/or an orientation of the virtual camera is changed based on the tracking information, but orientation change of the virtual camera corresponding to at least one of pitching and rolling is disabled or limited in a case where a traveling direction of the moving body changes.

A simulation system includes a processor including hardware. The processor performs a moving body process of performing a process of moving a moving body corresponding to a user wearing an HMD in a virtual space, a virtual camera control process of controlling a virtual camera moving in accordance with a movement of the moving body, and a display process of generating an image as viewed from the virtual camera in the virtual space as a display image of the HMD. In the display process, the processor performs a display process of changing, when a change in acceleration of the moving body or a change in a line-of-sight direction of the virtual camera is determined to have satisfied a given change condition, the display image on the HMD to an image different from the image as viewed from the virtual camera.

A simulation system includes a processor including hardware. The processor performs a moving body process of performing a process of moving a moving body corresponding to a user wearing an HMD in a virtual space, a virtual camera control process of controlling a virtual camera moving in accordance with a movement of the moving body, and a display process of generating an image as viewed from the virtual camera in the virtual space as a display image of the HMD. In the display process, the processor performs a display process of changing, when a change in acceleration of the moving body or a change in a line-of-sight direction of the virtual camera is determined to have satisfied a given change condition, the display image on the HMD to an image different from the image as viewed from the virtual camera.

A multi-axial unidirectional power transmission system includes a transmission unit and a resistance unit. The transmission unit includes a first main shaft and a transmission wheel provided on the first main shaft. The resistance unit includes a second main shaft and a damping wheel mounted on the second main shaft. The two transmission wheels and the damping wheel can be placed flat on the body since they are mounted on different main shafts, thereby making the whole plane of the multi-axis unidirectional power transmission system consistent, thus achieving the effects of space saving, convenient storage and convenient transportation.