Received: 8 November 2017
Accepted: 22 January 2018
First Online: 31 January 2018
Ethics approval and consent to participate
: Informed consent was obtained from the participants. In addition, this study was approved by the Ethics Committee of Kagawa University Faculty of Medicine and Graduate School of Medicine (approval number: Heisei28-128).
: Not applicable.
: The authors declare that they have competing interests. The study was conducted in collaboration between Kagawa University and Sin Cire Co., Ltd. KK is a director of specified nonprofit corporation Life that is a related organization of Sin Cire Co., Ltd. YM, KY, HK, and AK are the employees of Sin Cire Co., Ltd. They were involved in the development and implementation of exercise programs, but it does not involve research design, analysis, and reporting. TY, HS, KO, and TH declare that they have no conflicts of interest.
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