UMIN000027181 2017.

Methods	Randomised controlled study
Participants	230 patients, (≥ 50 years) undergoing planned head and neck surgery
Interventions	Group 1: passive cycling exercise by bedside ergometer for 20 minutes Group 2: early mobilisation
Outcomes	Primary outcomes: incidence of delirium as determined by the DSM‐5 Secondary outcomes: change in cognitive function, depression incidence rate, number of hospital days, mortality rate, presence or absence of other adverse events
Notes	UMIN‐CTR Clinical Trial Identifer: UMIN000027181 Status: completed (last modified 28/10/2017)

DSM‐5: Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition;VAS: visual analogue scale.