A psychometric validation of the motives for physical activity measure for youth with intellectual disabilities (MPAM-ID).

The MPAM-ID can be used among English- and French-speaking youth with ID irrespective of their age, BMI, ID level, sex, and FSI.IMPLICATIONS FOR REHABILITATIONWe propose English and French adaptations of the Motives for Physical Activity Measure for Youth with Intellectual Disabilities (MPAM-ID).The MPAM-ID was able to identify the same motives as the original measure.The MPAM-ID will facilitate the assessment of motives for physical Activity in cross-sectional and longitudinal studies.The MPAM-ID will facilitate the assessment of motives for physical Activity among English- and French-speaking youth with ID.The MPAM-ID could be used to compare youth motives for physical Activity as a function of their age, body-mass index, ID level, and frequency of sport involvement.