As Smart Health Industry has been expanding rapidly, the role of fitness coach is becoming more and more important in the Smart Health Service. Most researches have been focusing mostly on VUI(Voice User Interface), and rarely on User Experience or Preference about Fitness Voice Coach. Thus, there is a paucity of in-depth studies on user experience and preference for fitness voice coaches. In this regard, this research is designed to find out whether Smart Fitness Coaching could also produce meaningful results by referring to the Autonomy Support and Controlled Coaching Methods discussed in physical education. Interviews and surveys were conducted on 6 items related to coaching, which was divided into the process of pre-exercise, during exercise, and post-exercise. The 6 items in the questionare were follows - Whether to present purpose and cause of exercise, use of respectful/controlled language, use of sanguinary language, customized / uniformed coaching, use of reward, and guidance on the next activity. In this research, subjects showed preference on Autonomy Support Coaching, which provides the purpose and cause of exercises. In terms of use of respectful / controlled language, subjects had similar favorability on both coaching styles depending on their own tendency. On the other hand, Autonomy Support Coaching without sanguinary languages was unanimously preferred. In customized/ uniformed coaching, It depends of preference on each person individually. With regard to rewards, no significant effect on using rewards was to be found in half of the participants. Presenting the guidance on the following activities gave subjects professional impressions, which led subjects to be highly favorable to it. Subsequent survey on the 5 items (Trust Coach, Pleasure, Perceptible Ability, Exercise Satisfaction, Avoidance of Exercise and Exhaustion of Exercise) were conducted, and Autonomy Support Coaching was found to be more preferred than Controlled Coaching in general. However, it is noteworthy that some subjects with numerous athletic experiences were not affected by the coach in their Perceptible ability.

Artificial Intelligence, Voice Coaching, Fitness Coaching Type