Fig. 3. Development of wheel-running activity, body mass and food intake during training and at a workload of 90% from the maximal capacity in Workload animals (C and S groups pooled). Spontaneous wheel-running activity is shown for the 2 weeks prior to the training period (day 0). Circles show the development of the different variables during the experiment in the Workload animals, and triangles represent mean values for mice in the Ad-lib group.