“…Of all mentioned tests, the Groningen Fitness for the Elderly walking test is likely the most appropriate one because it is developed for older adults and is a reliable, valid, performance-based field test (Van Heuvelen, Kempen, Ormel, & Rispens, 1998;Lemmink, Kemper, de Greef, Rispens, & Stevens, 2001). To make the threshold to move as low as possible, there was a need for a field test with which the endurance of sedentary heart patients could be measured on a large scale in a simple and inexpensive way before participation in the movement-stimulation project.…”