Sturm 2012.

Methods	Randomised trial (n = 20)
Participants	People with previous suicidal attempts and clinically diagnosed with "hopelessness"
Interventions	9‐week hiking, 9‐week control
Outcomes	Hopelessness, depression, physical endurance, suicidal ideation
Notes	Likely to be eligible for inclusion N=20 Study could contribute data for one comparison, although very small sample size. Results positive for intervention involving exercise. Unlikely to affect review conclusions.

CBT: cognitive behavioural therapy; HAM‐D: Hamilton Rating Scale for Depression