Abstract: A system, method, and computer program product for athlete monitoring through a user interface is provided. The method includes receiving a first and second user input defining a current status of a user associated with a first and second readiness characteristic, respectively, prior to a training session or a match. From the first and second user input a readiness level for the user is determined. The method further includes receiving a third user input defining an exertion level of the user during a previous training session or a previous match, wherein the exertion level is associated with the perceived exertion level of the user during the training session or the previous match. Using the exertion level and duration of the session, a training load level of the previous training session or previous match is determined. The method further includes causing display of the readiness level for the user and the training load.

Abstract: A bifilar helical antenna which will radiate or receive in the backfire mode. The antenna consists of two interlaced helixes fed at the tip. Each helix is fed by a transmission line with energy of equal amplitude but 180.degree. out of phase. Optionally the helixes may be connected to a ground plane at the far end for mechanical stability. For the same reason an insulating right cylinder may be used to support the helixes. The two helixes have such a diameter and such a pitch or pitch distance that the currents flowing from their terminals to the far end are out of phase while the currents flowing in the reverse direction are in phase to provide a fast pseudo wave structure.