Ferraris 2019.

Study characteristics
Methods	Randomised controlled clinical trial
Participants	18 professional cyclists Inclusion and exclusion criteria: none provided
Interventions	2‐arm trial Intervention: 30 days of isocaloric time‐restricted feeding performed with the 16/8 method (16 hours fasting and 8 hour window for feeding) Comparator: ad libitum feeding
Outcomes	Body fat percentage, leucocyte number, IGF1
Notes	Type of paper: abstract only Funding: no data provided
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Abstract only and method of randomisation not stated in abstract.
Allocation concealment (selection bias)	Unclear risk	Abstract only and allocation concealment not indicated.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Since this trial was a dietary intervention study, it was not feasible for participants or all study personnel to be blinded to the group assignment.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Abstract only and blinding of outcome assessment not indicated.
Incomplete outcome data (attrition bias) All outcomes	High risk	Reported that 1 participant out of 9 (11.1%) left the TRF group and 1 participant out of 9 (11.1%) left the control group. These represent high attrition rates due to the small sample size.
Selective reporting (reporting bias)	Unclear risk	Abstract only.
Other bias	Unclear risk	Abstract only.