Abstract: A device may receive trial information that identifies rules or requirements associated with a clinical trial. The device may identify a set of participants associated with the clinical trial. The device may automatically obtain, from a user device associated with a particular participant, of the set of participants, first information regarding the particular participant. The first information may relate to a biometric of the particular participant or an environment associated with the particular participant. The device may determine that the first information indicates that the particular participant does not satisfy a particular rule or requirement associated with the clinical trial. The device may provide, to the user device, a prompt indicating that the particular participant does not satisfy the particular rule or requirement. The device may store or provide the first information for addition to a profile associated with the particular participant.

Abstract: An exercise device comprising a core element which may be generally spherical and interchangeable shells or covers which are mounted in an overlying relationship with the core to vary the total weight. The covers may have a two-part hinged construction or be segmented with the segments of each cover being interlocking. In one embodiment, the covers are sized to allow each cover to be mounted or nested one upon another in order to vary the weight. The cover may include two spherical panels having at least an outer wall element. Weight blocks, which can be mounted to the outer wall element or placed in a space between the outer wall element and an inner wall element, allow the mass of the cover to be adjusted. The exercise device may have attachment means to attach it to a bar unit, such as a barbell, or may be used as a free-standing exercise ball.

Abstract: An apparatus for providing feedback to a user of a weight stack machine having weights for lifting has an enclosure adapted for attachment to the weight stack machine. A weight sensor weight for determining the number of weights lifted is provided as well as an means for detecting the motion of the weights during a lift. An electronic detector is operatively coupled to the weight sensor and the encoder for computing data describing the number of weights lifted. An interface for transmitting the computed data from the electronic detector to a central storage and the display is provided. The interface also receives information from the central storage and displays it on the display.

Abstract: An apparatus for providing feedback to a user of a weight stack machine having weights for lifting has an enclosure adapted for attachment to the weight stack machine. Means for sensing weight for determining the number of weights lifted is provided as well as encoder means for detecting the motion of the weights during a lift. Electronic detection means are operatively coupled to the weight sensors means and the encoder means for computing data describing the number of weights lifted. Interface means for transmitting the computed data from the electronic detection means to a central storage means and the display is provided. The interface means also receives information from the central storage means and displays it on the display.