The aim of the study was to modify the Amotivation Toward Exercise Scale-2 by dropping the outcome amotivation beliefs subscale while retaining the capacity, effort, value, and task characteristics amotivation beliefs. Data from 515 Greek nonexerciser adults aged 19-64 years and 399 Greek nonexerciser older adults aged 65-82 years, men and women, supported the latent four-factor structure of the Revised Amotivation Toward Exercise Scale-2 scores within each sample separately. The hierarchical model was also supported. Measurement invariance of Revised Amotivation Toward Exercise Scale-2 scores was supported across groups of gender, age, body mass index, and educational levels within adults and older adults. Configural measurement invariance supported a replicable factor structure across adults and older adults. Metric and strong invariance was supported across middle-aged and older adults but not between younger and older adults. Full measurement invariance was supported between younger and middle-aged adults.

中文翻译：

---

运动动机来源的情境测量：修订后的运动动机量表 2。


该研究的目的是通过删除结果动机信念分量表 2 来修改对运动的动机量表 2，同时保留能力、努力、价值和任务特征动机信念。来自 515 名 19-64 岁的希腊非锻炼成年人和 399 名 65-82 岁的希腊非锻炼老年人（男性和女性）的数据分别支持每个样本中修订的锻炼动机量表 2 评分的潜在四因素结构。还支持分层模型。成人和老年人的性别、年龄、体重指数和教育水平组支持修订后的运动动机量表 2 评分的测量不变性。配置测量不变性支持成人和老年人的可复制因子结构。中老年人支持度量和强不变性，但年轻人和老年人不支持。支持年轻人和中年人的完全测量不变性。