The second part of the present study shows a clear association between moreself-determined types of motivation and the
amount of walking as well as moderate and vigorous intensity PA in patients with schizophrenia.Interestingly,the association with autonomous regulation was the strongest for the amount of walking,which is perhaps the stepping stone towards more intense physical activities.Notably,it might be that intrinsic motivation alone is not enough to sustain
long-term regular engagement in PA(Mullan and Markland,1997; Edmunds etal.,2006). Maintaining a physically active lifestyle especially requires a high degree of effort among patients with schizophrenia who are confronted with significant mental and physical health barriers. (Vancampfort etal.,2012d). There fore,understanding and fully endorsing the personal value of PA may be equally important for these patients as being physically active for enjoyment.Since health care providers typically focuson PA and exercise interms of health-related out comes rather than interms of the intrinsic
satisfactions, the primary source of self-determined motivation among patients may be derived from personally valuing of these outcomes (Daley andDuda,2006). In other words,it might have been the case that the more physically active participants with schizophrenia were more able to identify them selves with questions in the BREQ-2 related to the benefits of PA(“I value the benefits of physical activity”) because this is how PA is promoted to them.These patients might well find PA to be intrinsically enjoyable,but an equally importants ource of self-determined motivation comes from the outcomes that may be obtained from participation in PA.