In this thesis we analyzed clinimetric measurement properties of physical fitness tests
in wheelchair-using youth with SB. Furthermore, the amount of physical behavior in
wheelchair-using youth with SB was quantified and associations with age, gender,
VO2peak and Hoffer classification were evaluated. Finally, we described the factors
associated with physical behavior in youth with SB and youth with physical disabilities,
after which the evidence of interventions to improve physical behavior in youth with
physical disabilities was analyzed. This last chapter presents the theoretical and
clinical implications. At the end, methodological considerations and directions for
further research will be discussed after which the overall conclusion is presented.