Abstract：
BACKGROUND: Measurement instruments to understand self-determined motivation towards physical activity among college students with intellectual disabilities are needed to develop programs to support physical and psychological health and well-being. The purpose of the current study was to validate a modified questionnaire measuring basic psychological needs towards physical activity among college students with intellectual disabilities.
METHODS: A total of 108 college students with intellectual disabilities completed the modified questionnaire. Validity and reliability of the questionnaire was examined.
RESULTS: Confirmatory factor analysis demonstrated a six-factor model had good model fit. Cronbach\'s alpha values showed acceptable reliability evidence of the instrument as a whole, although some alpha values in subdomains of the instrument were below acceptable values.
CONCLUSIONS: The modified questionnaire was found to have acceptable validity evidence. Further studies are needed with refinement of answer options and the addition of more questions to increase reliability.
METHODS: A total of 108 college students with intellectual disabilities completed the modified questionnaire. Validity and reliability of the questionnaire was examined.
RESULTS: Confirmatory factor analysis demonstrated a six-factor model had good model fit. Cronbach\'s alpha values showed acceptable reliability evidence of the instrument as a whole, although some alpha values in subdomains of the instrument were below acceptable values.
CONCLUSIONS: The modified questionnaire was found to have acceptable validity evidence. Further studies are needed with refinement of answer options and the addition of more questions to increase reliability.
摘要：
背景：需要测量工具来了解智障大学生对体育锻炼的自主动机，以制定支持身心健康和福祉的计划。本研究的目的是验证修改后的问卷，该问卷可测量智障大学生对体育锻炼的基本心理需求。
方法：共有108名智力残疾大学生完成修改后的问卷。调查问卷的有效性和可靠性。
结果：验证性因素分析表明六因素模型具有良好的模型拟合。Cronbach的alpha值显示了整个仪器的可接受的可靠性证据，尽管仪器子域中的一些α值低于可接受值。
结论：发现修改后的问卷具有可接受的有效性证据。需要进一步研究，完善答案选项，并添加更多问题以提高可靠性。
方法：共有108名智力残疾大学生完成修改后的问卷。调查问卷的有效性和可靠性。
结果：验证性因素分析表明六因素模型具有良好的模型拟合。Cronbach的alpha值显示了整个仪器的可接受的可靠性证据，尽管仪器子域中的一些α值低于可接受值。
结论：发现修改后的问卷具有可接受的有效性证据。需要进一步研究，完善答案选项，并添加更多问题以提高可靠性。
