Acute effects of exercise intensity on butyrylcholinesterase and ghrelin in young men: A randomized controlled study.

"Declaration of competing interest The authors declare no conflicts of interest."

"Funding This research was funded by the Faculty of Sport Sciences, 10.13039/501100004423Waseda University (Japan)."

"The study was conducted by the guidelines of the Declaration of Helsinki, and the protocol was reviewed and approved by the institutional ethics committee on human research (approval number 2021-436). The study was registered in advance with the University Hospital Medical Information Network Center (UMIN), a system for registering clinical trials (ID: UMIN00004811). Participants of the present study were recruited between May 2022 and March 2023 through advertisements placed within the campus. Following an explanation of the study protocol and disclosure of any potential risks that may arise, written informed consent was obtained from 15 Japanese (i.e., self-reported ethnicity) healthy young men. The exclusion criteria were as follows: 1) aged <20 or >30 years, 2) regular consumption of any medication or supplementation, 3) diagnosed with a major illness, 4) current smoker, 5) unstable body mass for at least 3 months before the study, 5) to lose weight during the study or 6) already participating in other studies. The participant flow diagram is shown in and described in detail as follows. The physical and descriptive characteristics of the participants are shown in .Fig. 1Consolidated Standards of Reporting Trials (CONSORT) diagram showing participant flow. Numbers in bold indicate the number of individuals/participants.Fig. 1"