| Methods |
Randomised, single‐blind, placebo‐controlled cross‐over trial |
| Participants |
6 participants, 3 men (50, 39 and 27 years), 3 women (42, 29 and 25 years) |
| Interventions |
77 mg/kg branched‐chain amino acids as a drink and a control 200 mL non‐calorific drink |
| Outcomes |
Performance on cycle ergometer for 20 minutes at maximal intensity without experiencing pain or exhaustion |
| Notes |
|
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Random sequence generation (selection bias) |
Unclear risk |
The method of sequence generation was not described |
| Allocation concealment (selection bias) |
Unclear risk |
The method of allocation concealment was not described |
| Blinding (performance bias and detection bias)
All outcomes |
High risk |
Only participants were blinded. It is not clear if the placebo and treatment had the same taste |
| Incomplete outcome data (attrition bias)
All outcomes |
Low risk |
There were no dropouts or incomplete data |
| Selective reporting (reporting bias) |
Low risk |
There was equal reporting for placebo and treatment groups; outcomes in methods were reported as specified |
| Other bias |
Low risk |
No other source of bias was identified |
