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. 2013 Sep 12;2013(9):CD004366. doi: 10.1002/14651858.CD004366.pub6

Knubben 2007.

Methods RCT (parallel group)
Participants Inpatients with major depression
 Mean age 49
 55% women
 N = 38
Interventions 1. Walking training on a treadmill for 10 days (n = 10)
 2. Placebo (low‐intensity stretching and relaxation) light stretching exercises for the calves, thighs, back, shoulders and pectoral muscles, as well as relaxation exercises, daily for 30 minutes (n = 18)
Outcomes 1. Bech‐Rafaelsen Scale (BRMS)
 2. Center for Epidemiologic Studies Depression Scale (CES‐D)
Notes Authors state intention‐to‐treat, but of the 39 recruited only 38 were used in the analysis. Outcome assessor for BRMS blinded to treatment allocation
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Low risk Computer‐generated block list
Allocation concealment (selection bias) Low risk Central randomisation
Blinding (performance bias and detection bias) 
 participants Unclear risk Participants aware of treatment allocation, unclear effect on bias
Blinding (performance bias and detection bias) 
 those delivering intervention Unclear risk Those delivering intervention aware of allocation, unclear effect on bias
Blinding (performance bias and detection bias) 
 outcome assessors Low risk A single psychologist (blinded to treatment allocation) assessed outcome using the BRMS
Incomplete outcome data (attrition bias) 
 All outcomes Unclear risk The report states 39 were randomised, but the outcome data relate to only 38. Three participants dropped out. Missing data were imputed, but authors have not accounted for the 1 participant who seems to have been randomised but was not reported in the tables of results.
Selective reporting (reporting bias) Unclear risk All prespecified outcomes seem to have been reported, but no protocol
Other bias Unclear risk Unclear