[Aim] This study’s aims were to develop an evaluation scale for movements in Radio Taiso (Radio Exercise) No. 1 and to examine its content validity and reliability. [Participants] Ten instructors with a Radio Taiso Instructor Certificate I participated in an examination of the content validity of the scale. To measure the reliability of the scale, ten younger adults and ten older adults performed Radio Taiso No. 1. Their performance was evaluated by three instructors with the Radio Taiso Instructor Certificate I. [Methods] The content validity of the scale was established by comparing relevant literature and extracting perspectives of evaluating movements in Radio Taiso No. 1. A pilot scale was created based on the identified perspectives. The scale was then used in a questionnaire survey, which was conducted by the mailing method. The reliability of the scale was established by calculating a kappa coefficient for intra-rater and Cronbach’s α coefficient for inter-rater reliability. [Results] The content validity and reliability of the movement evaluation scale were verified. The scale comprised a total of 92 items, and could yield a maximum score of 276. [Conclusion] This study developed an evaluation scale for movements included in Radio Taiso No. 1. The scale could help observe and evaluate movements in detail. Furthermore, its content validity and reliability were verified.
