1. Device for the continuous and non-invasive determination of physiological parameters of a test person during exercise comprisingan LED-based illumination unit, designed to be able to rest on the skin of the test person at a desired measuring point, with a plurality of different, juxtaposed LED types, whose emission maxima at different wavelengths ?1, ?2 . . . ?L lie from visible to NIR-wavelength range, wherein the lighting unit comprises at least one LED type with an emission maximum below 590 nm,
a photo sensor, which is designed to rest on the skin of the test person in order to capture light emitted by the illumination unit and passing through the body of the person to an exit location in the area of the photo sensor,
a data processing unit, which is connected to the photo sensor to read it out, and which is connected to the lighting unit and is adapted to operate the different LED types individually in a predetermined activation sequence at successive activation start times tk (k=1, 2 . . . M) for a respective predetermined activation period to activate and repeat the activation sequence with a clock frequency as a result n=1, 2 . . . N of activation sequences, the clock frequency is sufficiently high to resolve the pulse of the test person's circulation,
a camera sensor, based on CCD or CMOS with a two-dimensional array with rows and columns of sensor elements is used as the photo sensor,
the camera sensor is arranged relative to the lighting unit so that it can rest on the skin on the same side of the body part as the lighting unit and adjacent to it to detect light passing by transflection through the body of the test person to the camera sensor,
the data processing unit is set up to read out the camera sensor in each activation sequence at the activation start times tk (k=1, 2 . . . M) and over the respective activation period, and to record the detected intensities of the sensor elements, combined over subregions of sensor elements and the respective activation sequence from the sequence n=1, 2 . . . N of activation sequences and the respective activation start time tk (k=1, 2 . . . M) assigned as time series, wherein sub-areas of the camera sensor are summarized by reading out lines of the camera sensor, which lie parallel to the connection axis between the illumination unit and the camera sensor and along which the distance from the illumination unit increases, and parallel rows are combined into a single averaged row, and the data processing means is arranged to evaluate the averaged row as a function of the distance from the illumination to muscle oximetry.