“…Subjective perception of exertion is typically evaluated on the basis of rating scales like the Borg Scale (Borg, ): athletes differentiate ten to fifteen exertion or fatigue levels verbally, or they point at numbers or images of a human in different bodily postures reflecting different states of exertion. In the present study, perceived exertion was assessed at nine times during training with the OMNI Scale for children (Robertson et al, ; Utter, Robertson, Nieman, & Kang, ), which had been previously been applied in studies with people with intellectual disabilities by Stanish and Aucoin () and Chen, Ringenbach, Snow, and Hunt (). The OMNI Scale differentiates ten levels of exertion ranging from very, very weak (1) to very, very tired (10).…”