Research
Adherence
A family-based educational intervention does not significantly improve physical activity levels or cardiovascular fitness in healthy families.
While the intervention successfully improved dietary habits, it did not significantly increase physical activity or fitness levels. This suggests that changing physical activity habits is more difficult and may require different strategies.
GoodRefutesHIGH confidence
There were no significant group differences in reported physical activity or in tested cardiovascular fitness levels.
Why this rating
RCT with large sample size, but the outcome was null.
Source
A Family Approach to Cardiovascular Risk Reduction: Results from The San Diego Family Health Project
Philip R. Nader et al. · Health Education Quarterly · 1989
DOI 10.1177/109019818901600207
rct · n=623Cited 245×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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