Plans for when and where may help adults be a little more active
HelpedThe short version
Across nine studies, if-then plans and plans for when and where helped adults exercise more than the other group did.

- 9
- studies pooled
- 789
- adults in 26 studies on physical activity
- 2 tools
- tested
The review
Who took part
Adults with average ages from 18 to 64, in 26 studies: 789 people at the end and 2,749 later on. Eleven studies used students, eight used patients, and seven used the general population.
What they did
People in one group made plans for when, where and how to act, or if-then plans for what to do about obstacles. Other groups filled in a questionnaire, got usual care or got another treatment. People were checked again one to 46 weeks later, with no contact in between.
What happened
People were more active than the other groups straight after the plans, and still later on, by a small to medium amount. Most studies only looked at people who finished, and twelve used questions that had not been checked. Extra findings for students, patients and obstacle plans were less certain, and the paper's counts do not quite agree.
What the review found
- Helped
Across nine studies, if-then plans and plans for when and where helped adults exercise more than the other group did.
Pooled analysis of 9 studies with 789 people · vs people given another treatment, usual care or a questionnaire · ⚠ mixes trials with other kinds of study
- Helped
Across 19 studies, the plans still helped people exercise more, up to 46 weeks after they ended.
Pooled analysis of 19 studies with 2,749 people · vs people given another treatment, usual care or a questionnaire · ⚠ mixes trials with other kinds of study
How solid is this?
- Only counted people who finished
- Many people dropped out
- Summary claims more than the results show
- Numbers unreliable
- Mixes trials with other kinds of study
Source
A meta-analytic review of the effect of implementation intentions on physical activity (2013)
DOI: 10.1080/17437199.2011.560095 (opens in a new tab)

