Thread on exercise and mental health and potential considerations for COVID-19:

1. Inducing sedentary behaviour in healthy people, can increase depression after as little as 7 days.

Need messaging to replace sedentary time w any PA https://www.ncbi.nlm.nih.gov/pubmed/27492908 
2. Consider mental health / mental illness continuum. Exercise can be an effective component of treatment

AND

as a prevention strategy regardless of quadrant.

Required messaging and support will likely differ.

E.g evidence in non-clinical adults: https://www.ncbi.nlm.nih.gov/pubmed/25739893 
3. As little as 60mins of physical activity per week can prevent up to 17% of incident cases of depression

https://www.ncbi.nlm.nih.gov/pubmed/29690792 

With robust evidence from genetic studies
https://www.ncbi.nlm.nih.gov/pubmed/30673066 
4. What about the mental health of first-responders and workers on 'front-line'

Decline in physical activity over time is related to symptoms of PTSD. More severe symptoms = less PA.

Could we prevent some cases of PTSD by keeping people active?

https://www.ajpmonline.org/action/showPdf?pii=S0749-3797%2817%2930105-8
6. Evidence for exercise as a part of treatment for people living with mental illness?

Umbrella review by @Garcia__AF of 27 systematic reviews (152 individual RCTs)
https://www.ncbi.nlm.nih.gov/pubmed/31541410 

Also guidelines from international orgs including @EP_Editors
http://dx.doi.org/10.1016/j.eurpsy.2018.07.004
9. We don't have to 'get sweaty' in order to experience mental health benefits

Resistance training (RT) (muscle exercises🏋🏽‍♂️) can be just as effective (relevant during lockdown)

RT & Depression:
https://jamanetwork.com/journals/jamapsychiatry/fullarticle/2680311

RT & Anxiety:
https://www.ncbi.nlm.nih.gov/pubmed/28819746 
11. Consider 'Exercise Snacks' - short bouts of activity throughout the day - especially relevant for those working from home

https://www.nytimes.com/2019/01/23/well/move/20-second-exercise-fitness-interval-training.html
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