. 2021 Sep 8;11:17849. doi: 10.1038/s41598-021-97301-8

Table 1.

Approval ID by the local ethics committee, and Clinical Trials Registry of the studies.

Journal, year^reference	Approval ID	Clinical Trials Registry, date
EBioMedicine, 2015¹⁹	Tai 24-44	Not registered
PLoS One, 2017¹⁸	Tai 24-119	Not registered
Metabolism, 2017⁸	Tai 22-390	Not registered
Am J Clin Nutr, 2019²¹	Tai 25-16	UMIN000032346, 2018/4/23
Nutrients, 2020⁹	H30-224	UMIN000035313, 2018/12/19
Metabolism Open, 2020²⁰	Tai 26-46	UMIN000040638, 2020/6/3
J Appl Physiol, 2020 ²²	Tai 28-32	UMIN000038252, 2019/10/10
Physiol Rep, 2020²³	Tai 29-29	Not registered
Sci Rep, 2021²⁴	Tai-28-52	UMIN000040428, 2020/5/31
Sleep Med Res, 2021²⁵	H30-284	UMIN000035640, 2021/3/31

All study protocols were approved by the local ethics committee of the University of Tsukuba, and its approval ID was shown. Clinical Trials Registry was not applied for 4 observational studies^8,18,19,23.